WO2020244667A1 - 供电电路和逆变器 - Google Patents

供电电路和逆变器 Download PDF

Info

Publication number
WO2020244667A1
WO2020244667A1 PCT/CN2020/094961 CN2020094961W WO2020244667A1 WO 2020244667 A1 WO2020244667 A1 WO 2020244667A1 CN 2020094961 W CN2020094961 W CN 2020094961W WO 2020244667 A1 WO2020244667 A1 WO 2020244667A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
terminal
circuit
voltage conversion
output terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/094961
Other languages
English (en)
French (fr)
Inventor
邵金呈
朱吉新
谢小威
王晨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP20819514.9A priority Critical patent/EP3902094B1/en
Publication of WO2020244667A1 publication Critical patent/WO2020244667A1/zh
Priority to US17/471,794 priority patent/US11532938B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/345—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering using capacitors as storage or buffering devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other DC sources, e.g. providing buffering with light sensitive cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/02—Conversion of AC power input into DC power output without possibility of reversal
    • H02M7/04—Conversion of AC power input into DC power output without possibility of reversal by static converters
    • H02M7/06—Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/22—Solar energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2101/00—Supply or distribution of decentralised, dispersed or local electric power generation
    • H02J2101/20—Dispersed power generation using renewable energy sources
    • H02J2101/22—Solar energy
    • H02J2101/24—Photovoltaics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

Definitions

  • This application relates to the field of power supply, and in particular to a power supply circuit and an inverter.
  • inverters are used to convert direct current generated by solar panels into alternating current and connect to the grid.
  • the monitoring chip in the inverter is also used to record the power generation and operation of the solar panel.
  • the DC voltage conversion module 21 of the inverter 20 converts the DC high voltage (for example, 1000V) generated by the solar panel 10 into the working voltage (for example, 3.3V) of the monitoring chip 22 , So that the monitoring chip 22 can work normally.
  • the solar panel 10 cannot work and therefore cannot supply power for the normal operation of the monitoring chip 22.
  • the energy storage module (such as a battery or super capacitor) 23 supplies power to the real-time clock of the monitoring chip 22.
  • the real-time clock can only be used for timing or timing.
  • the solar panel requires a long working time (for example, 25 years), and the energy storage module has a short service life due to frequent charging and discharging, and it is difficult to guarantee long-term use.
  • the embodiments of the present application provide a power supply circuit and an inverter, which are used to increase the service life of an energy storage module in a solar inverter.
  • a power supply circuit including: a first input terminal, a second input terminal, a first output terminal, a second output terminal, a first voltage conversion circuit, a rectifier circuit, a second voltage conversion circuit, and energy storage Module.
  • the input terminal of the first voltage conversion circuit serves as the first input terminal of the power supply circuit, the first input terminal of the power supply circuit is used to connect the output terminal of the solar panel; the first output terminal of the first voltage conversion circuit serves as the power supply circuit The first output terminal, the first output terminal of the power supply circuit is used to connect the first power supply terminal of the monitoring chip; the second output terminal of the first voltage conversion circuit is connected to the input terminal of the energy storage module, wherein the first power supply terminal is used for The entire chip is powered by the monitoring chip.
  • the input terminal of the rectifier circuit is used as the second input terminal of the power supply circuit, and the second input terminal of the power supply circuit is used to connect at least one phase of AC power of the AC power grid; the output terminal of the rectifier circuit is connected to the input terminal of the second voltage conversion circuit; The output terminal of the conversion circuit and the output terminal of the energy storage module are both used as the second output terminal of the power supply circuit.
  • the second output terminal of the power supply circuit is used to connect to the second power supply terminal of the monitoring chip.
  • the second power supply terminal is used for monitoring The real-time clock in the chip supplies power.
  • the first voltage conversion circuit is used to convert the DC high voltage output by the solar panel into the working voltage of the monitoring chip;
  • the rectifier circuit is used to convert the AC voltage of at least one phase of the AC power of the AC power grid into a DC voltage;
  • the second voltage conversion circuit It is used to convert the DC voltage output by the rectifier circuit into the working voltage of the real-time clock in the monitoring chip; when the AC power grid is unavailable, the output voltage of the second voltage conversion circuit is higher than the output voltage of the energy storage module .
  • the first voltage conversion circuit converts the DC high voltage output by the solar panel into the working voltage of the monitoring chip to supply power to the entire chip of the monitoring chip , While charging the energy storage module.
  • the output voltage of the output terminal of the second voltage conversion circuit is higher than the output voltage of the energy storage module, which can be performed by the real-time clock in the monitoring chip through the AC power grid.
  • the energy storage module is prevented from continuing to supply power to the real-time clock in the monitoring chip, and the charging and discharging frequency of the energy storage module is reduced, thereby increasing the service life of the energy storage module in the solar inverter.
  • the energy storage module Since the second voltage conversion circuit and the output end of the energy storage module are connected together, under normal working conditions at night, when the AC power grid is unavailable, the output voltage of the second voltage conversion circuit is higher than the output voltage of the energy storage module. As a result, the energy storage module cannot output current, so it can always be fully charged without frequent charging and discharging. If the output voltage of the second voltage conversion circuit and the energy storage module are equal or the output voltage of the second voltage conversion circuit is lower than the output voltage of the energy storage module, the energy storage module will also discharge at night. Therefore, under normal circumstances, the energy storage module will not be used for power supply. Only when the light is insufficient and the AC grid is cut off, the output voltage of the second voltage conversion circuit is 0, and the energy storage module will supply power. The energy storage module is equivalent to an uninterruptible power supply. When the light is insufficient and the AC grid is powered off, it is guaranteed to supply power to the real-time clock in the monitoring chip.
  • the second voltage conversion circuit is a resistor divider circuit.
  • the resistor divider circuit has a simple structure and low cost.
  • the second voltage conversion circuit includes a first resistor and a second resistor, the first end of the first resistor is connected to the positive output end of the rectifier circuit, and the second end of the first resistor is connected to the second resistor.
  • the first resistor and the second resistor perform voltage conversion on the DC voltage output by the rectifier circuit in a voltage division manner, so that the voltage output to the second input terminal of the monitoring chip is the working voltage of the real-time clock in the monitoring chip.
  • a fifth diode is connected in series to the output terminal of the second voltage conversion circuit, and the anode of the fifth diode is connected to the second end of the first resistor.
  • the negative pole is connected to the second power supply terminal of the monitoring chip.
  • the fifth diode may also be called a reverse diode, and is used to provide a stable reference voltage for the output terminal of the second voltage conversion circuit.
  • the second voltage conversion circuit further includes a first capacitor and a second capacitor, wherein the first capacitor is connected in parallel with the second resistor, and the first end of the second capacitor is connected to the fifth diode. Negative, the second terminal of the second capacitor is connected to the ground terminal of the second voltage conversion circuit.
  • the first capacitor and the second capacitor are used for energy storage.
  • the rectifier circuit is a half-bridge rectifier circuit or a full-bridge rectifier circuit.
  • the rectifier circuit includes a positive output terminal, a negative output terminal, a first diode, and a second diode; the anode of the first diode is connected to the first phase of at least one phase of the AC power grid.
  • the cathode of the first diode is the anode output end; the cathode of the second diode is connected to the second end of at least one phase of AC power of the AC power grid, and the anode of the second diode is the cathode output end.
  • the rectifier circuit further includes a third diode and a fourth diode, the anode of the third diode is connected to the cathode of the second diode, and the cathode of the third diode is connected to To the cathode of the first diode; the anode of the fourth diode is connected to the anode of the second diode, and the cathode of the fourth diode is connected to the anode of the first diode.
  • a third resistor is connected in series with the positive output terminal of the rectifier circuit, and a fourth resistor is connected in series with the negative output terminal of the rectifier circuit.
  • the third resistor and the fourth resistor function as current limiting.
  • an inverter including the power supply circuit and the monitoring chip as described in the first aspect and any of the embodiments thereof, the first input terminal of the power supply circuit is connected to the output terminal of the solar panel, and the power supply circuit The second input terminal is connected to at least one phase of AC power of the AC power grid; the first output terminal of the power supply circuit is connected to the first power supply terminal of the monitoring chip, wherein the first power supply terminal is used to power the entire chip of the monitoring chip; the second output of the power supply circuit The terminal is connected to the second power supply terminal of the monitoring chip, where the second power supply terminal is used to supply power to the real-time clock in the monitoring chip.
  • FIG. 1 is a structural schematic diagram 1 of an inverter provided by an embodiment of the application.
  • FIG. 2 is a second structural diagram of an inverter provided by an embodiment of the application.
  • FIG. 3 is a third structural diagram of an inverter provided by an embodiment of the application.
  • FIG. 4 is a first structural diagram of a rectifier circuit and a second voltage conversion circuit provided by an embodiment of the application;
  • FIG. 5 is a second structural schematic diagram of a rectifier circuit and a second voltage conversion circuit provided by an embodiment of this application;
  • FIG. 6 is a third structural schematic diagram of a rectifier circuit and a second voltage conversion circuit provided by an embodiment of this application;
  • FIG. 7 is a fourth structural schematic diagram of a rectifier circuit and a second voltage conversion circuit provided by an embodiment of this application.
  • FIG. 8 is a fifth structural schematic diagram of a rectifier circuit and a second voltage conversion circuit provided by an embodiment of the application.
  • the solar panels In the scenario of generating electricity through solar panels, the solar panels output direct current, which needs to be converted into alternating current through an inverter before it can be connected to the AC grid.
  • the inverter 40 includes a power supply circuit 41 and a monitoring chip 42.
  • the first input terminal of the power supply circuit 41 is connected to the output terminal of the solar cell panel 30.
  • the second input end of the power supply circuit 41 is connected to at least one phase of AC power of the AC power grid 50.
  • the first output terminal of the power supply circuit 41 is connected to the first power supply terminal of the monitoring chip 42, where the first power supply terminal is used to supply power to the entire monitoring chip 42.
  • the second output terminal of the power supply circuit 41 is connected to the second power supply terminal of the monitoring chip 42, where the second power supply terminal is used to supply power to the real time clock (RTC) in the monitoring chip 42.
  • RTC real time clock
  • the monitoring chip 42 is used to record the power generation and operation of the solar panel 30.
  • the power supply circuit 41 is used to convert the DC high voltage output by the solar cell panel 30 into the working voltage of the monitoring chip 42 to supply power to the entire monitoring chip 42.
  • the power supply circuit 41 is used to convert the AC high voltage of the AC grid 50 into the working voltage of the real-time clock in the monitoring chip 42 to provide the real-time clock in the monitoring chip 42. powered by.
  • the power supply circuit 41 includes: a first input terminal IN1, a second input terminal IN2, a first output terminal OUT1, a second output terminal OUT1, a first voltage conversion circuit 411, a rectifier circuit 412, and a Two voltage conversion circuit 413 and energy storage module 414.
  • the input terminal IN1 of the first voltage conversion circuit 411 serves as the first input terminal IN1 of the power supply circuit 41, and the first input terminal IN1 of the power supply circuit 41 is used to connect to the output terminal of the solar cell panel 30.
  • the first output terminal of the first voltage conversion circuit 411 serves as the first output terminal OUT1 of the power supply circuit 41, and the first output terminal OUT1 of the power supply circuit 41 is used to connect to the first power supply terminal of the monitoring chip 42.
  • the second output terminal of the first voltage conversion circuit 411 is connected to the input terminal of the energy storage module 414. Among them, the first power supply terminal is used to supply power to the entire chip of the monitoring chip 42.
  • the input terminal IN2 of the rectifier circuit 412 serves as the second input terminal IN2 of the power supply circuit 41, and the second input terminal IN2 of the power supply circuit 41 is used to connect at least one phase of AC power of the AC power grid 50.
  • the output terminal of the rectifier circuit 412 is connected to the input terminal of the second voltage conversion circuit 413.
  • the output terminal of the second voltage conversion circuit 413 and the output terminal of the energy storage module 414 both serve as the second output terminal OUT2 of the power supply circuit 41, and the second output terminal OUT2 of the power supply circuit 41 is used to connect to the second power supply terminal of the monitoring chip 42.
  • the second power supply terminal is used to supply power to the real-time clock in the monitoring chip 42.
  • the first voltage conversion circuit 411 is used to convert the DC high voltage output by the solar panel 30 into the working voltage of the monitoring chip 42.
  • the rectifier circuit 412 is used to convert the AC voltage of at least one phase of the AC power of the AC power grid into a DC voltage.
  • the second voltage conversion circuit 413 is used to convert the DC voltage output by the rectifier circuit 412 into the working voltage of the real-time clock in the monitoring chip 42. Moreover, when the AC power grid is continuously powered, the voltage output by the output terminal of the second voltage conversion circuit 413 is higher than the voltage output by the output terminal of the energy storage module 414.
  • the specific working principle of the circuit is as follows: when the solar panel 30 is working normally during the day or when the sun is sufficient, the first voltage conversion circuit 41 converts the DC high voltage output by the solar panel 30 into the working voltage of the monitoring chip 42 to be the monitoring chip 42 The entire chip supplies power and charges the energy storage module 414 at the same time.
  • the rectifier circuit 412 and the second voltage conversion circuit 413 convert the AC voltage of at least one phase of the AC power of the AC power grid 50 into the working voltage of the real-time clock in the monitoring chip 42. To supply power to the real-time clock in the monitoring chip 42.
  • the output voltage of the output terminal of the second voltage conversion circuit 413 is higher than the output voltage of the output terminal of the energy storage module 414, which can prevent the energy storage module 414 from continuing to monitor when the AC grid 50 supplies power to the real-time clock in the monitoring chip
  • the real-time clock in the chip provides power supply, which reduces the charge and discharge frequency of the energy storage module 414, thereby increasing the service life of the energy storage module in the solar inverter.
  • the output voltage of the second voltage conversion circuit 413 is higher than that of the energy storage module 414
  • the output voltage prevents the energy storage module 414 from outputting current, so it can always be fully charged, and there is no need to charge and discharge frequently.
  • the output voltage of the second voltage conversion circuit 413 and the energy storage module 414 are equal or the output voltage of the second voltage conversion circuit 413 is lower than the output voltage of the energy storage module 414 will cause the energy storage module 414 to discharge at night. Therefore, in general, the energy storage module will not be used for power supply.
  • the energy storage module 414 is equivalent to an uninterruptible power supply, and when the light is insufficient and the AC grid is powered off, it is guaranteed to supply power to the real-time clock in the monitoring chip.
  • the first voltage conversion circuit 411 may include a DC auxiliary source 4111 and a voltage conversion sub-circuit 4112.
  • the input terminal of the DC auxiliary source 4111 serves as the first input terminal of the power supply circuit 41 and is connected to the solar panel. 30's output.
  • the output terminal of the DC auxiliary source 4111 is connected to the input terminal of the voltage conversion sub-circuit 4112, and the output terminal of the voltage conversion sub-circuit 4112 is used as the first output terminal of the power supply circuit 41, connected to the input terminal of the energy storage module 414 and the monitoring chip of the inverter 42's first power supply terminal.
  • the DC auxiliary source 4111 is used to convert the DC high voltage (for example, 1000V) output by the solar panel 30 into a DC low voltage (for example, 13V), and the voltage conversion sub-circuit 4112 is used to convert the DC low voltage output by the DC auxiliary source 4111 into the monitoring chip 42 Operating Voltage.
  • the rectifier circuit 412 may be a half-bridge rectifier circuit or a full-bridge rectifier circuit.
  • the second voltage conversion circuit 413 may be a resistor divider circuit, and the resistor divider circuit is relatively simple to implement, which can reduce the cost of the voltage conversion circuit.
  • the rectifier circuit 412 is a half-bridge rectifier circuit, and the input end of the rectifier circuit 412 is connected to a single phase of the AC power grid 50.
  • the rectifier circuit 412 includes a positive output terminal P, a negative output terminal N, a first diode D1 and a second diode D2.
  • the anode of the first diode D1 is connected to the first end of the at least one phase of AC power of the AC power grid 50
  • the cathode of the second diode D2 is connected to the second end of the at least one phase of AC power of the AC power grid 50.
  • the cathode of the first diode D1 serves as the anode output terminal P of the rectifier circuit 412
  • the anode of the second diode D2 serves as the cathode output terminal N of the rectifier circuit 412.
  • the second voltage conversion circuit 413 includes a first resistor R1 and a second resistor R2. As the positive output terminal P of the first terminal rectifier circuit 412 connected to the first resistor R1, the second terminal of the first resistor R1 is connected to the first terminal of the second resistor R2 and the second power supply terminal of the monitoring chip 42; The second end of the resistor R2 is connected to the negative output terminal N of the rectifier circuit 412.
  • the first resistor R1 and the second resistor R2 convert the DC voltage output by the rectifier circuit 412 in a voltage division manner, so that the voltage output to the second input terminal of the monitoring chip 42 is the operating voltage of the real-time clock in the monitoring chip 42.
  • the rectifier circuit 412 may further include a third diode D3 and a fourth diode D4.
  • the anode of the third diode D3 is connected to the cathode of the second diode D2, and the cathode of the third diode D3 is connected to the cathode of the first diode D1.
  • the anode of the fourth diode D4 is connected to the anode of the second diode D2, and the cathode of the fourth diode D4 is connected to the anode of the first diode D1.
  • the rectifier circuit 412 is a full bridge rectifier circuit.
  • a third resistor R3 is connected in series with the positive output terminal of the rectifier circuit 412, and a fourth resistor R4 is connected in series with the negative output terminal of the rectifier circuit 412.
  • the third resistor R3 and the fourth resistor R4 function as current limiting.
  • a fifth diode D5 is connected in series with the output terminal of the second voltage conversion circuit 413.
  • the anode of the fifth diode D5 is connected to the second end of the first resistor R1, and the cathode of the fifth diode D5 is connected to the second power supply terminal of the monitoring chip 42.
  • the fifth diode D5 may also be called a reverse diode, and is used to provide a stable reference voltage for the output terminal of the second voltage conversion circuit 413.
  • the second voltage conversion circuit 413 may further include a first capacitor C1 and a second capacitor C2, wherein the first capacitor C1 is connected in parallel with the second resistor R2 , The first terminal of the second capacitor C2 is connected to the cathode of the fifth diode D5, and the second terminal of the second capacitor C2 is connected to the ground terminal of the second voltage conversion circuit 413.
  • the first capacitor C1 and the second capacitor C2 are used for energy storage.
  • the rectifier circuit 412 is a half-bridge rectifier circuit, and the input ends of the rectifier circuit 412 are connected to two phases of the AC power grid 50.
  • FIG. 8 The difference between FIG. 8 and FIG. 4 is that the first end of at least one phase of AC power of the AC power grid 50 and the second end of at least one phase of AC power of the AC power grid 50 referred to in FIG. 4 both refer to the same phase of the AC power grid 50 .
  • the first end of at least one phase of AC power of the AC power grid 50 referred to in FIG. 8 refers to the non-public end of the first phase of the AC power grid 50
  • the second end of at least one phase of AC power of the AC power grid 50 refers to the second phase of the AC power grid 50
  • the non-public end For other content, please refer to the previous description and will not be repeated here.
  • the half-bridge rectifier circuit and the full-bridge rectifier circuit can output the same waveform voltage and current, but in the rectification process, the reverse voltage or current they bear are different.
  • the peak value of the voltage output by the half-bridge rectifier circuit is only half of the input voltage, so when the output power is the same, the half-bridge rectifier circuit has to bear twice the reverse voltage or current of the full-bridge rectifier circuit. Therefore, the specifications of the diode in the half-bridge rectifier circuit have higher requirements.
  • the full bridge rectification can be applied to high-power rectification.
  • full-wave rectification refers to the rectification of both the upper half and the lower half of the alternating current sine wave
  • half-wave rectification refers to the rectification of the upper or lower half of the alternating current sine wave.
  • the first voltage conversion circuit converts the DC high voltage output by the solar panel into the working voltage of the monitoring chip to become the monitoring chip
  • the entire chip supplies power and simultaneously charges the energy storage module.
  • the output voltage of the output terminal of the second voltage conversion circuit is higher than the output voltage of the energy storage module, which can be performed by the real-time clock in the monitoring chip through the AC power grid.
  • the energy storage module is prevented from continuing to supply power to the real-time clock in the monitoring chip, and the charging and discharging frequency of the energy storage module is reduced, thereby increasing the service life of the energy storage module in the solar inverter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Inverter Devices (AREA)

Abstract

一种供电电路（41）和逆变器（40），涉及供电领域，用于提高太阳能逆变器中储能模块的使用寿命。供电电路（41）包括：第一输入端（IN1）、第二输入端（IN2）、第一输出端（OUT1）、第二输出端（OUT2）、第一电压转换电路（411）、整流电路（412）、第二电压转换电路（413）、储能模块（414）。第一电压转换电路（411）的输入端作为第一输入端（IN1）连接太阳能电池板（30）的输出端；第一电压转换电路（411）的第一输出端作为供电电路（41）的第一输出端（OUT1）连接监控芯片（42）的第一供电端；第一电压转换电路（411）的第二输出端连接储能模块（414）的输入端；整流电路（412）的输入端作为第二输入端（IN2）连接交流电网（50）的至少一相交流电；整流电路（412）的输出端连接第二电压转换电路（413）的输入端；第二电压转换电路（413）以及储能模块（414）的输出端均作为供电电路（41）的第二输出端（OUT2）连接监控芯片（42）的第二供电端。

Description

供电电路和逆变器
本申请要求于2019年6月6日提交国家知识产权局、申请号为201910493697.3、申请名称为“供电电路和逆变器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及供电领域，尤其涉及一种供电电路和逆变器。
背景技术
在太阳能发电设备中，逆变器用于将太阳能电池板产生的直流电转换成交流电，并接入电网。另外，逆变器中的监控芯片还用于记录太阳能电池板的发电和运行情况。
如图1所示，在白天有光照的情况下，逆变器20的直流电压转换模块21将太阳能电池板10产生的直流高压(例如1000V)转换为监控芯片22的工作电压(例如3.3V)，使得监控芯片22能够正常工作。在夜晚无光照的情况下，太阳能电池板10不能工作，因此不能为监控芯片22的正常工作供电，此时由储能模块(例如电池或超级电容)23为监控芯片22的实时时钟供电，该实时时钟仅能用于计时或定时。
但是，一般太阳能电池板工作时间要求较长(例如25年)，而储能模块由于频繁充放电，使得使用使用寿命很短，难以保证长时间使用。
发明内容
本申请实施例提供一种供电电路和逆变器，用于提高太阳能逆变器中储能模块的使用寿命。
为达到上述目的，本申请的实施例采用如下技术方案：
第一方面，提供了一种供电电路，包括：第一输入端、第二输入端、第一输出端、第二输出端、第一电压转换电路、整流电路、第二电压转换电路、储能模块。其中，第一电压转换电路的输入端作为供电电路的第一输入端，供电电路的第一输入端用于连接太阳能电池板的输出端；第一电压转换电路的第一输出端作为供电电路的第一输出端，供电电路的第一输出端用于连接监控芯片的第一供电端；第一电压转换电路的第二输出端连接储能模块的输入端，其中，第一供电端用于为监控芯片整个芯片供电。整流电路的输入端作为供电电路的第二输入端，供电电路的第二输入端用于连接交流电网的至少一相交流电；整流电路的输出端连接第二电压转换电路的输入端；第二电压转换电路的输出端以及储能模块的输出端均作为供电电路的第二输出端，供电电路的第二输出端用于连接监控芯片的第二供电端，其中，第二供电端用于为监控芯片内的实时时钟供电。其中，第一电压转换电路用于将太阳能电池板输出的直流高压转换为监控芯片的工作电压；整流电路用于将交流电网的至少一相交流电的交流电压转换成直流电压；第二电压转换电路用于将整流电路输出的直流电压转换为监控芯片内的实时时钟的工作电压；当交流电网不断电时，第二电压转换电路的输出端输出的电压高于储能模块的输出端输出的电压。
本申请实施例提供的供电电路，当阳光充足使得太阳能电池板正常工作时，由第 一电压转换电路将太阳能电池板输出的直流高压转换为监控芯片的工作电压，来为监控芯片整个芯片进行供电，同时为储能模块充电。在夜间正常工作情况下，当交流电网不断电时，第二电压转换电路的输出端输出的电压高于储能模块的输出端输出的电压，可以在通过交流电网为监控芯片内的实时时钟进行供电时，防止储能模块继续为监控芯片内的实时时钟进行供电，降低了储能模块的充放电频率，从而可以提高太阳能逆变器中储能模块的使用寿命。
由于第二电压转换电路和储能模块的输出端是连接在一起的，在夜间正常工作情况下，当交流电网不断电时，第二电压转换电路输出的电压高于储能模块输出的电压，使得储能模块无法输出电流，所以可以一直保持满电，也就不用频繁充放电。第二电压转换电路和储能模块输出电压相等或第二电压转换电路输出电压低于储能模块输出电压都会让储能模块在夜间也放电。所以一般情况下都不会用储能模块供电，只有当光照不足并且交流电网断电这种极端情况时，第二电压转换电路输出电压为0，储能模块才供电。储能模块相当于不间断电源，当光照不足并且交流电网断电时保证为监控芯片内的实时时钟供电。
在一种可能的实施方式中，第二电压转换电路为电阻分压电路。电阻分压电路结构简单，并且成本较低。
在一种可能的实施方式中，第二电压转换电路包括第一电阻和第二电阻，第一电阻的第一端连接至整流电路的正极输出端，第一电阻的第二端连接至第二电阻的第一端以及监控芯片的第二供电端；第二电阻的第二端连接至整流电路的负极输出端。第一电阻和第二电阻通过分压方式对整流电路输出的直流电压进行电压转换，使得输出至监控芯片的第二输入端的电压为监控芯片内的实时时钟的工作电压。
在一种可能的实施方式中，第二电压转换电路的输出端上还串联有第五二极管，第五二极管的正极连接至第一电阻的第二端，第五二极管的负极连接至监控芯片的第二供电端。第五二极管也可以称为反向二极管，用于为第二电压转换电路的输出端提供稳定的参考电压。
在一种可能的实施方式中，第二电压转换电路还包括第一电容和第二电容，其中，第一电容与第二电阻并联，第二电容的第一端连接至第五二极管的负极，第二电容的第二端连接至第二电压转换电路的接地端。第一电容和第二电容用于储能。
在一种可能的实施方式中，整流电路为半桥整流电路或全桥整流电路。
在一种可能的实施方式中，整流电路包括正极输出端、负极输出端、第一二极管和第二二极管；第一二极管的正极连接至交流电网的至少一相交流电的第一端，第一二极管的负极为正极输出端；第二二极管的负极连接至交流电网的至少一相交流电的第二端，第二二极管的正极为负极输出端。
在一种可能的实施方式中，整流电路还包括第三二极管和第四二极管，第三二极管的正极连接至第二二极管的负极，第三二极管的负极连接至第一二极管的负极；第四二极管的正极连接至第二二极管的正极，第四二极管的负极连接至第一二极管的正极。
在一种可能的实施方式中，整流电路的正极输出端上串联有第三电阻，整流电路的负极输出端上串联有第四电阻。第三电阻和第四电阻起到限流的作用。
第二方面，提供了一种逆变器，包括如第一方面及其任一实施方式所述的供电电路以及监控芯片，供电电路的第一输入端连接太阳能电池板的输出端，供电电路的第二输入端连接交流电网的至少一相交流电；供电电路的第一输出端连接监控芯片的第一供电端，其中，第一供电端用于为监控芯片整个芯片供电；供电电路的第二输出端连接监控芯片的第二供电端，其中，第二供电端用于为监控芯片内的实时时钟供电。
关于第二方面的技术效果可以参照第一方面的内容。
附图说明
图1为本申请实施例提供的一种逆变器的结构示意图一；
图2为本申请实施例提供的一种逆变器的结构示意图二；
图3为本申请实施例提供的一种逆变器的结构示意图三；
图4为本申请实施例提供的一种整流电路和第二电压转换电路的结构示意图一；
图5为本申请实施例提供的一种整流电路和第二电压转换电路的结构示意图二；
图6为本申请实施例提供的一种整流电路和第二电压转换电路的结构示意图三；
图7为本申请实施例提供的一种整流电路和第二电压转换电路的结构示意图四；
图8为本申请实施例提供的一种整流电路和第二电压转换电路的结构示意图五。
具体实施方式
在通过太阳能电池板发电的场景中，太阳能电池板输出的是直流电，需要通过逆变器将该直流电转换为交流电，才能接入交流电网。
本申请提供了一种逆变器，该逆变器可以为太阳能逆变器。如图2所示，该逆变器40包括供电电路41和监控芯片42。
供电电路41的第一输入端连接太阳能电池板30的输出端。供电电路41的第二输入端连接交流电网50的至少一相交流电。供电电路41的第一输出端连接监控芯片42的第一供电端，其中，第一供电端用于为监控芯片42整个芯片供电。供电电路41的第二输出端连接监控芯片42的第二供电端，其中，第二供电端用于为监控芯片42内的实时时钟(real time clock，RTC)供电。
监控芯片42用于记录太阳能电池板30的发电和运行情况。当白天或阳光充足使得太阳能电池板30正常工作时，供电电路41用于将太阳能电池板30输出的直流高压转换为监控芯片42的工作电压，来为监控芯片42整个芯片进行供电。当夜晚或阳光不足使得太阳能电池板30不能正常工作时，供电电路41用于将交流电网50的交流高压转换为监控芯片42内的实时时钟的工作电压，来为监控芯片42内的实时时钟进行供电。
具体的，如图2所示，供电电路41包括：第一输入端IN1、第二输入端IN2、第一输出端OUT1、第二输出端OUT1、第一电压转换电路411、整流电路412、第二电压转换电路413以及储能模块414。
其中，第一电压转换电路411的输入端IN1作为供电电路41的第一输入端IN1，供电电路41的第一输入端IN1用于连接太阳能电池板30的输出端。第一电压转换电路411的第一输出端作为供电电路41的第一输出端OUT1，供电电路41的第一输出端OUT1用于连接监控芯片42的第一供电端。第一电压转换电路411的第二输出端连接储能模块414的输入端。其中，第一供电端用于为监控芯片42整个芯片供电。
整流电路412的输入端IN2作为供电电路41的第二输入端IN2，供电电路41的第二输入端IN2用于连接交流电网50的至少一相交流电。整流电路412的输出端连接第二电压转换电路413的输入端。第二电压转换电路413的输出端以及储能模块414的输出端均作为供电电路41的第二输出端OUT2，供电电路41的第二输出端OUT2用于连接监控芯片42的第二供电端。其中，第二供电端用于为监控芯片42内的实时时钟供电。
其中，第一电压转换电路411用于将太阳能电池板30输出的直流高压转换为监控芯片42的工作电压。整流电路412用于将交流电网的至少一相交流电的交流电压转换成直流电压。第二电压转换电路413用于将整流电路412输出的直流电压转换为监控芯片42内的实时时钟的工作电压。并且，当交流电网不断电时，第二电压转换电路413的输出端输出的电压高于储能模块414的输出端输出的电压。
该电路具体工作原理如下：当白天或阳光充足使得太阳能电池板30正常工作时，第一电压转换电路41将太阳能电池板30输出的直流高压转换为监控芯片42的工作电压，来为监控芯片42整个芯片进行供电，同时为储能模块414充电。当夜晚或阳光不足使得太阳能电池板30不能正常工作时，整流电路412和第二电压转换电路413将交流电网50的至少一相交流电的交流电压转换为监控芯片42内的实时时钟的工作电压，来为监控芯片42内的实时时钟进行供电。
第二电压转换电路413的输出端输出的电压高于储能模块414的输出端输出的电压，可以在通过交流电网50为监控芯片内的实时时钟进行供电时，防止储能模块414继续为监控芯片内的实时时钟进行供电，降低了储能模块414的充放电频率，从而可以提高太阳能逆变器中储能模块的使用寿命。
由于第二电压转换电路413和储能模块414的输出端是连接在一起的，在夜间正常工作情况下，当交流电网不断电时，第二电压转换电路413输出的电压高于储能模块414输出的电压，使得储能模块414无法输出电流，所以可以一直保持满电，也就不用频繁充放电。第二电压转换电路413和储能模块414输出电压相等或第二电压转换电路413输出电压低于储能模块414输出电压都会让储能模块414在夜间也放电。所以一般情况下都不会用储能模块供电，只有当光照不足并且交流电网断电这种极端情况时，第二电压转换电路413输出电压为0，储能模块414才供电。储能模块414相当于不间断电源，当光照不足并且交流电网断电时保证为监控芯片内的实时时钟供电。
示例性的，如图3所示，第一电压转换电路411可以包括直流辅源4111和电压转换子电路4112，直流辅源4111的输入端作为供电电路41的第一输入端，连接太阳能电池板30的输出端。直流辅源4111的输出端连接电压转换子电路4112的输入端，电压转换子电路4112的输出端作为供电电路41的第一输出端，连接储能模块414的输入端以及逆变器的监控芯片42的第一供电端。
直流辅源4111用于将太阳能电池板30输出的直流高压(例如1000V)转换为直流低压(例如13V)，电压转换子电路4112用于将直流辅源4111输出的直流低压转换为监控芯片42的工作电压。
具体的，整流电路412可以为半桥整流电路或全桥整流电路。第二电压转换电路 413可以为电阻分压电路，电阻分压电路实现较简单，可以降低电压转换电路的成本。
示例性的，如图4所示，为本申请提供的整流电路和第二电压转换电路的一种具体实施方式。该实施方式中，该整流电路412为半桥整流电路，整流电路412的输入端连接交流电网50的单相。
该整流电路412包括正极输出端P、负极输出端N、第一二极管D1和第二二极管D2。第一二极管D1的正极连接至交流电网50的至少一相交流电的第一端，第二二极管D2的负极连接至交流电网50的至少一相交流电的第二端。第一二极管D1的负极作为整流电路412的正极输出端P，第二二极管D2的正极作为整流电路412的负极输出端N。
第二电压转换电路413包括第一电阻R1和第二电阻R2。作为连接至第一电阻R1的第一端整流电路412的正极输出端P，第一电阻R1的第二端连接至第二电阻R2的第一端以及监控芯片42的第二供电端；第二电阻R2的第二端连接至整流电路412的负极输出端N。
第一电阻R1和第二电阻R2通过分压方式对整流电路412输出的直流电压进行电压转换，使得输出至监控芯片42的第二输入端的电压为监控芯片42内的实时时钟的工作电压。
可选的，如图5和图7所示，在图4基础上，整流电路412还可以包括第三二极管D3和第四二极管D4。第三二极管D3的正极连接至第二二极管D2的负极，第三二极管D3的负极连接至第一二极管D1的负极。第四二极管D4的正极连接至第二二极管D2的正极，第四二极管D4的负极连接至第一二极管D1的正极。此时，该整流电路412为全桥整流电路。
可选的，如图6和图7所示，在图4基础上，整流电路412的正极输出端上串联有第三电阻R3，整流电路412的负极输出端上串联有第四电阻R4。第三电阻R3和第四电阻R4起到限流的作用。
可选的，如图6和图7所示，在图4基础上，第二电压转换电路413的输出端还串联有第五二极管D5。第五二极管D5的正极连接至第一电阻R1的第二端，第五二极管D5的负极连接至监控芯片42的第二供电端。第五二极管D5也可以称为反向二极管，用于为第二电压转换电路413的输出端提供稳定的参考电压。
可选的，如图6和图7所示，在图4基础上，第二电压转换电路413还可以包括第一电容C1和第二电容C2，其中，第一电容C1与第二电阻R2并联，第二电容C2的第一端连接至第五二极管D5的负极，第二电容C2的第二端连接至第二电压转换电路413的接地端。第一电容C1和第二电容C2用于储能。
示例性的，如图8所示，为本申请提供的整流电路和第二电压转换电路的另一种具体实施方式。该实施方式中，该整流电路412为半桥整流电路，整流电路412的输入端连接交流电网50的两相。
图8与图4的区别在于，图4中涉及的交流电网50的至少一相交流电的第一端以及交流电网50的至少一相交流电的第二端，均指交流电网50的同一相而言。图8中涉及的交流电网50的至少一相交流电的第一端指交流电网50的第一相的非公共端，交流电网50的至少一相交流电的第二端指交流电网50的第二相的非公共端。其他内 容参照前面描述，在此不再重复。
同样地，图8中所示的两相同样可以替换图4-图7中所示的单相的连接方式，其他内容参照前面描述，在此不再重复。
半桥整流电路和全桥整流电路可以输出相同的波形电压和电流，但是在整流过程中，二者承担的反向电压或电流不同。半桥整流电路输出的电压的峰值只有输入电压的一半，因此在输出功率相同时，半桥整流电路要承担两倍于全桥整流电路的反向电压或电流。因此，半桥整流电路中二极管的规格有较高要求。而全桥整流可以应用于高功率整流中。
另外，半桥整流电路要实现全波整流需要使用中心抽头型变压器，否则只能实现半波整流。全波整流指对交流电正弦波的上半波和下半波均进行整流，半波整流指对交流电正弦波的上半波或下半波进行整流。
本申请实施例提供的供电电路和逆变器，当阳光充足使得太阳能电池板正常工作时，由第一电压转换电路将太阳能电池板输出的直流高压转换为监控芯片的工作电压，来为监控芯片整个芯片进行供电，同时为储能模块充电。在夜间正常工作情况下，当交流电网不断电时，第二电压转换电路的输出端输出的电压高于储能模块的输出端输出的电压，可以在通过交流电网为监控芯片内的实时时钟进行供电时，防止储能模块继续为监控芯片内的实时时钟进行供电，降低了储能模块的充放电频率，从而可以提高太阳能逆变器中储能模块的使用寿命。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (6)

  1. 一种供电电路，其特征在于，包括：第一输入端、第二输入端、第一输出端、第二输出端、第一电压转换电路、整流电路、第二电压转换电路、储能模块，其中，
    所述第一电压转换电路的输入端作为所述供电电路的第一输入端，所述供电电路的第一输入端用于连接太阳能电池板的输出端；所述第一电压转换电路的第一输出端作为所述供电电路的第一输出端，所述供电电路的第一输出端用于连接监控芯片的第一供电端；所述第一电压转换电路的第二输出端连接所述储能模块的输入端，其中，所述第一供电端用于为所述监控芯片整个芯片供电；
    所述整流电路的输入端作为所述供电电路的第二输入端，所述供电电路的第二输入端用于连接交流电网的至少一相交流电；所述整流电路的输出端连接所述第二电压转换电路的输入端；所述第二电压转换电路的输出端以及所述储能模块的输出端均作为所述供电电路的第二输出端，所述供电电路的第二输出端用于连接所述监控芯片的第二供电端，其中，所述第二供电端用于为所述监控芯片内的实时时钟供电；
    其中，所述第一电压转换电路用于将所述太阳能电池板输出的直流高压转换为所述监控芯片的工作电压；所述整流电路用于将所述交流电网的至少一相交流电的交流电压转换成直流电压；所述第二电压转换电路用于将所述整流电路输出的直流电压转换为所述监控芯片内的实时时钟的工作电压；所述第二电压转换电路的输出端输出的电压高于所述储能模块的输出端输出的电压。
  2. 根据权利要求1所述的供电电路，其特征在于，所述第二电压转换电路为电阻分压电路。
  3. 根据权利要求2所述的供电电路，其特征在于，所述第二电压转换电路包括第一电阻和第二电阻，所述第一电阻的第一端连接至所述整流电路的正极输出端，所述第一电阻的第二端连接至所述第二电阻的第一端以及所述监控芯片的第二供电端；所述第二电阻的第二端连接至所述整流电路的负极输出端。
  4. 根据权利要求3所述的供电电路，其特征在于，所述第二电压转换电路的输出端上还串联有第五二极管，所述第五二极管的正极连接至所述第一电阻的第二端，所述第五二极管的负极连接至所述监控芯片的第二供电端。
  5. 根据权利要求4所述的供电电路，其特征在于，所述第二电压转换电路还包括第一电容和第二电容，其中，所述第一电容与所述第二电阻并联，所述第二电容的第一端连接至所述第五二极管的负极，所述第二电容的第二端连接至所述第二电压转换电路的接地端。
  6. 一种逆变器，其特征在于，包括如权利要求1-5任一项所述的供电电路以及监控芯片，所述供电电路的第一输入端连接太阳能电池板的输出端，所述供电电路的第二输入端连接交流电网的至少一相交流电；所述供电电路的第一输出端连接所述监控芯片的第一供电端，其中，所述第一供电端用于为所述监控芯片整个芯片供电；所述供电电路的第二输出端连接所述监控芯片的第二供电端，其中，所述第二供电端用于为所述监控芯片内的实时时钟供电。
PCT/CN2020/094961 2019-06-06 2020-06-08 供电电路和逆变器 Ceased WO2020244667A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20819514.9A EP3902094B1 (en) 2019-06-06 2020-06-08 Power supply circuit and inverter
US17/471,794 US11532938B2 (en) 2019-06-06 2021-09-10 Power supply circuit and inverter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910493697.3 2019-06-06
CN201910493697.3A CN110277823B (zh) 2019-06-06 2019-06-06 供电电路和逆变器

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/471,794 Continuation US11532938B2 (en) 2019-06-06 2021-09-10 Power supply circuit and inverter

Publications (1)

Publication Number Publication Date
WO2020244667A1 true WO2020244667A1 (zh) 2020-12-10

Family

ID=67961983

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/094961 Ceased WO2020244667A1 (zh) 2019-06-06 2020-06-08 供电电路和逆变器

Country Status (4)

Country Link
US (1) US11532938B2 (zh)
EP (1) EP3902094B1 (zh)
CN (1) CN110277823B (zh)
WO (1) WO2020244667A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110277823B (zh) 2019-06-06 2021-06-15 华为技术有限公司 供电电路和逆变器
CN111030284A (zh) * 2019-12-16 2020-04-17 季华实验室 伺服驱动系统供电电路及装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200976509Y (zh) * 2006-11-28 2007-11-14 熊小伟 互补式太阳能不间断供电控制器
CN102856973A (zh) * 2012-09-07 2013-01-02 浙江工业大学 光伏逆变器的市电补偿装置
JP2014166128A (ja) * 2013-02-28 2014-09-08 Panasonic Corp 分散型発電システム
CN204118757U (zh) * 2014-10-22 2015-01-21 中塔新兴通讯技术有限公司 一种在线式快速充电的通信电源移峰填谷系统
CN106549501A (zh) * 2016-12-09 2017-03-29 国网安徽省电力公司池州供电公司 用于通信电源的智能管理监控单元和变电站通信电源系统
CN107918569A (zh) * 2017-11-22 2018-04-17 北京深思数盾科技股份有限公司 监测rtc芯片掉电、晶振停振的方法和装置
CN110277823A (zh) * 2019-06-06 2019-09-24 华为技术有限公司 供电电路和逆变器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1329221C (zh) * 2004-01-29 2007-08-01 三菱电机株式会社 车辆用辅助电源装置
CN202502401U (zh) * 2012-03-28 2012-10-24 上海电力学院 一种用于智能用电中的智能控制器
CN204886204U (zh) * 2015-07-20 2015-12-16 安阳师范学院 具有混合储能装置的储能系统
CN106788375A (zh) * 2017-01-19 2017-05-31 温州商学院 一种零电压单火线墙壁触摸开关电路
CN207442465U (zh) * 2017-10-30 2018-06-01 长春工程学院 一种具有电能质量监控功能的光伏并网逆变器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200976509Y (zh) * 2006-11-28 2007-11-14 熊小伟 互补式太阳能不间断供电控制器
CN102856973A (zh) * 2012-09-07 2013-01-02 浙江工业大学 光伏逆变器的市电补偿装置
JP2014166128A (ja) * 2013-02-28 2014-09-08 Panasonic Corp 分散型発電システム
CN204118757U (zh) * 2014-10-22 2015-01-21 中塔新兴通讯技术有限公司 一种在线式快速充电的通信电源移峰填谷系统
CN106549501A (zh) * 2016-12-09 2017-03-29 国网安徽省电力公司池州供电公司 用于通信电源的智能管理监控单元和变电站通信电源系统
CN107918569A (zh) * 2017-11-22 2018-04-17 北京深思数盾科技股份有限公司 监测rtc芯片掉电、晶振停振的方法和装置
CN110277823A (zh) * 2019-06-06 2019-09-24 华为技术有限公司 供电电路和逆变器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3902094A4

Also Published As

Publication number Publication date
US20210408801A1 (en) 2021-12-30
CN110277823A (zh) 2019-09-24
EP3902094B1 (en) 2023-02-22
CN110277823B (zh) 2021-06-15
US11532938B2 (en) 2022-12-20
EP3902094A4 (en) 2022-04-06
EP3902094A1 (en) 2021-10-27

Similar Documents

Publication Publication Date Title
CN104065157B (zh) 一种改进供电可靠性的不间断电源
Hu et al. A review of power decoupling techniques for microinverters with three different decoupling capacitor locations in PV systems
Deshpande et al. A review of topologies of inverter for grid connected PV systems
US8493753B2 (en) Photovoltaic powered system
US7075193B2 (en) Power factor correcting circuit for uninterrupted power supply
WO2019136577A1 (zh) 多绕组同时/分时供电电流型单级多输入高频环节逆变器
CN104320048A (zh) 一种具有储能功能的光伏发电系统及其协调供电方法
US20210050773A1 (en) Bidirectional power factor correction module
CN105958823A (zh) 一种电流连续型高增益开关升压准z源变换器电路
US20120170325A1 (en) High Efficiency Solar Wind Inverter With Hybrid DCDC Converter
CN205847093U (zh) 一种电流连续型高增益开关升压准z源变换器电路
Burlaka et al. Bidirectional single stage isolated DC-AC converter
US11532938B2 (en) Power supply circuit and inverter
CN105958855B (zh) 一种高增益准z源逆变器
CN103929079B (zh) 具备光伏侧解耦电路的微逆变器及其工作方法
TWI413336B (zh) 雙向換流裝置及其直流供電系統
CN206117540U (zh) 一种开关升压型高增益准z源逆变器
CN107579675B (zh) 一种可抑制漏电流六开关电流型光伏逆变器拓扑及方法
TW201325026A (zh) 不間斷電源系統
CN206697997U (zh) 光伏发电系统充放电电路
CN207947634U (zh) 一种三相电充电电路结构
de Melo et al. Photovoltaic grid-connected flyback micro-inverter and boost MPPT integrated to street lighting system based on LEDs
CN223472186U (zh) 一种光伏逆变器及其辅助电源
CN216413981U (zh) 一种便携式电源装置
CN115441721B (zh) 提高保持时间的电路

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20819514

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020819514

Country of ref document: EP

Effective date: 20210721

NENP Non-entry into the national phase

Ref country code: DE