WO2009156021A1 - Circuit transformateur de tension et onduleur - Google Patents

Circuit transformateur de tension et onduleur Download PDF

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Publication number
WO2009156021A1
WO2009156021A1 PCT/EP2009/003305 EP2009003305W WO2009156021A1 WO 2009156021 A1 WO2009156021 A1 WO 2009156021A1 EP 2009003305 W EP2009003305 W EP 2009003305W WO 2009156021 A1 WO2009156021 A1 WO 2009156021A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
input
output
circuit according
converter circuit
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/EP2009/003305
Other languages
German (de)
English (en)
Inventor
Steffen Fischer
Andreas Vath
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2009156021A1 publication Critical patent/WO2009156021A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • 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
    • H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
    • H02M7/44—Conversion of DC power input into AC power output without possibility of reversal by static converters
    • H02M7/48—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade

Definitions

  • the present invention relates to a voltage converter circuit for DC voltage according to the preamble of claim 1.
  • the present invention further relates to an inverter according to the preamble of claim 9.
  • DC voltage converter circuits also called DC / DC converters
  • DC / DC converters are used in a wide variety of applications. Such are e.g. Inverters for solar plants, switching power supplies, converters for motor and generator control as well as electric travel drives in motor vehicles or industrial trucks.
  • the object of the present invention is to provide a voltage converter circuit which is as simple as possible, and nevertheless energy-efficient, by means of which, e.g. increase the efficiency of feed-in converters.
  • the series connection of the input voltage and an adjustable voltage source allows only a differential voltage between input and output voltage in the actual voltage converter branch - referred to as adjustable voltage source fed from the input voltage - is generated. As a result, the power losses in the voltage converter circuit are reduced overall.
  • the differential voltage generated by voltage conversion is based on the input voltage.
  • the advantage of this concept is the voltage conversion in the power distribution so that depending on the input voltage and output voltage, only a portion of the total power is passed through a step-up or step-down converter and thereby the losses in the active components are reduced. As a result, a higher efficiency in the voltage conversion or voltage adjustment compared to conventional conversion concepts to achieve what leads to a variety of applications.
  • the described circuit concept can also be used in systems for the conversion of single-phase or polyphase AC voltages, if the AC voltage is rectified beforehand.
  • An inverter using the present invention is not only simpler in construction than the conventional inverter described above. It is at least as efficient at low input voltage - below the line peak voltage - as in the conventional inverter, when up-conversion takes place, all of the instantaneous converted power flows through the boost converter.
  • FIG. 1 shows a power-boosting boost converter according to a first
  • FIG. 2 shows a modification of the boost converter illustrated in FIG. 1 by providing a bypass path to the boost branch via a diode
  • FIG. 3 shows a modification of the boost converter shown in Figure 2 below
  • FIG. 4 shows a modification of the boost converter illustrated in FIG. 2 in which the boosting branch can be decoupled from the output using a further switch
  • Figure 5 shows a power dividing buck converter according to a second
  • FIG. 6 shows a modification of the buck converter illustrated in FIG.
  • FIG. 7 shows a modification of the buck converter illustrated in FIG. 6 in which the buck-jack branch can be decoupled from the output using a further switch
  • FIG. 8 shows an inverter with asymmetrical input according to a third embodiment of the present invention, which as
  • Input circuit has a boost converter according to Figure 2,
  • FIG. 9 shows an inverter with asymmetrical input according to a fourth embodiment of the present invention, which as
  • Input circuit has a boost converter according to Figure 4,
  • FIG. 10 shows a symmetrical input inverter according to a fifth exemplary embodiment of the present invention, which has two boost converters according to FIG. 2 in the input circuit, and
  • FIG. 11 shows an inverter with a symmetrical input according to a sixth embodiment of the present invention, which has two boost converter of Figure 4 in the input circuit.
  • Si, S 2 , S 3 designate switches as an active component, eg a
  • Ci, C 2 designate capacitors or electrical energy storage
  • Li Denote coils or inductive components U ...: denote voltages across the corresponding one
  • a power-splitting step-up converter for DC voltage is shown, which converts the input voltage UE into a variable output voltage U A.
  • Two capacitors Ci and C 2 are connected in series.
  • the input voltage UE is applied to Ci.
  • the output voltage UA is tapped off via the series connection of Ci and C 2 .
  • the positive potential of the input voltage is supplied to the common terminal of Ci and C 2 .
  • the other terminal of C 2 is connected via a coil L 1 and a diode D 1 in series also to the positive potential of the input voltage.
  • a switch Si is connected at the connection point between coil Li and diode Di. About the switch Si, the said connection point can be connected to ground.
  • the coil Li, the diode Di, the switch Si and the capacitor C 2 form a known boost converter, which, however, is supported instead of ground on the positive potential of the input voltage.
  • renewable energy production - e.g. in the photovoltaic - the input voltage regulated so that the maximum energy or power can be taken from the generating plant (maximum power point tracking).
  • This method can also be used in the invention described here by regulating the voltage UE accordingly.
  • the voltage UE is influenced by the power-split boost converter and the power output to a downstream inverter.
  • the boost converter is preferably controlled so that the desired power output can be achieved over the feed network
  • the switch S1 can be controlled so that the voltage across C2 is only slightly greater than 0 volts.
  • FIG. 1 A possible modification is shown in FIG. This modification improves the efficiency at a sufficiently high input voltage, that is, when UA is set equal to U E. If the switch S 1 is constantly open, no energy flows through the boost converter. Instead, a bypass path is available. On this flows the complete current through the diode D 2 , which can also be designed as an active switch S 2 as in the circuit of Figure 3. In particular, if the losses should be low, a Mosfet switch S 2 can be used instead of the diode D 2 .
  • the circuit concept according to FIG. 4 is used. If an inverter is connected downstream of the circuit according to FIG. 4, when feeding into an alternating current or three-phase network to reduce the power loss, the switchable elements S 2 and S 3 are respectively alternately controlled as follows: As long as the voltage caused by the phase angle instantaneous voltage of the AC or three-phase voltage is below the voltage of UE, the switch S 2 is closed, while S 3 is open, and the power is fed without raising in the appropriate network. There is, so to speak, a bypass operation.
  • the additional switch S3 prevents a rapid change between boost mode and bypass operation discharging the capacitor C 2 in periods in which the Hochsetzstellzweig Li, Di, Si, C 2 is bridged by the switch S 2 .
  • circuit topologies for power-dividing step-down converters for DC voltage are shown in FIGS. 5, 6 and 7.
  • the desired output voltage is formed as the sum of the voltages of the two capacitors C1 and C2 connected in series, ie the input voltage and another, adjustable voltage in the power dividing Tiefsetzstellem according to Figure 5, 6 and 7 , which in this case, however, is directed against the input voltage.
  • Two capacitors Ci and C 2 are connected in series.
  • the input voltage UE is applied to Ci.
  • the output voltage U A is tapped across the series circuit of Ci and C 2 .
  • the positive potential of the input voltage is supplied to the common terminal of Ci and C 2 .
  • the other terminal of C 2 is also connected in series via a diode Di and a coil Li to the positive potential of the input voltage.
  • the sequence of the coil L 1 and the diode Di and the forward direction of the diode Di are reversed compared to the boost converter of Figure 1. Via the "Si, the connection point between coil L and diode Di may be connected to ground.
  • the coil Li form, the diode Di, the switch Si and the capacitor C 2 a known step-down converter, which, however, instead of to ground at the positive potential of the input voltage is supported.
  • the voltage on the capacitor C 2 is generated via the step-down branch of coil Li, the switch Si, the diode Di, and the capacitor C 2, which together form an inverting step-down converter.
  • the voltage across the capacitor C 2 is opposite to the voltage across C 1 .
  • the switch Si is closed and a current is formed, which flows through the coil Li and switch Si. If the switch Si is opened again, then the current will continue to tilter across the diode Di until the current is zero and the tension is reversed.
  • the voltage Uc 2 is controlled so that the desired output voltage UA arises.
  • the circuits according to FIGS. 6 and 7 show modifications of the step-down converter according to FIG. 5.
  • the switch S2 additionally present in the circuit according to FIG. 6 permits the bridging of the step-down branch L 1 , Si, Di, C 2 .
  • the input voltage without conversion can be provided directly at the output terminal. At low input voltage so no fall
  • Downsetting branch Li, Si, Di, C 2 is active, and a bypass operation in which the enquiriesetzstellzweigs Li, Si, D 1 , C 2 is not active, to be changed.
  • step-up converters are used as part of an inverter or converter.
  • all of the voltage transformers shown in Figures 1 to 7 can be used as needed in inverters or converters. Possible applications are u.A. Inverters for DC sources with a large variation of the input voltage, e.g. Solar Inverters or regenerative electric drives with three-phase motors of industrial automation technology.
  • FIGS. 8 and 9 show circuit arrangements using the power branching step-up converter with diode D2 or active components S2 and S3 according to FIGS. 2 and 4 as input circuit 3 for an inverter 5.
  • the inverter 5 may be single-phase or multi-phase.
  • the invention described here is very versatile with simultaneous increase in efficiency.
  • FIG. 10 and FIG. 11 show symmetrically constructed inverters 9 with a likewise symmetrically designed input circuit 7 of power-split boost converters according to FIGS. 2 and 4.
  • the advantages of the inverter topologies with symmetrical input voltages are utilized. These can be executed both single-phase and multi-phase.
  • the step-up converter according to FIGS. 2 and 4 the step-up converter according to FIGS. 1 and 3 as well as step-down converter according to FIGS. 5 to 7 can be integrated into the input circuit of inverters, as shown in FIGS. 8 to 11.
  • Step-down converters can be provided instead of or in parallel with a step-up converter, depending on the purpose of the inverter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un circuit transformateur de tension pour convertir une tension continue d'entrée en tension continue de sortie prédéfinissable, ce circuit présentant une entrée et une sortie, ainsi qu'une source de tension variable alimentée depuis l'entrée. Selon l'invention, la sortie est reliée à un circuit en série composé de l'entrée et de la source de tension variable de sorte que la tension appliquée à l'entrée et la tension de la source de tension variable s'ajoutent.
PCT/EP2009/003305 2008-06-28 2009-05-09 Circuit transformateur de tension et onduleur Ceased WO2009156021A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008030814A DE102008030814A1 (de) 2008-06-28 2008-06-28 Spannungswandlerschaltung und Wechselrichter
DE102008030814.5 2008-06-28

Publications (1)

Publication Number Publication Date
WO2009156021A1 true WO2009156021A1 (fr) 2009-12-30

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Application Number Title Priority Date Filing Date
PCT/EP2009/003305 Ceased WO2009156021A1 (fr) 2008-06-28 2009-05-09 Circuit transformateur de tension et onduleur

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DE (1) DE102008030814A1 (fr)
WO (1) WO2009156021A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103248229A (zh) * 2012-02-03 2013-08-14 英飞凌科技股份有限公司 具有开关转换器的电路装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102522911B (zh) * 2011-11-25 2014-04-30 华为技术有限公司 逆变装置及应用其的太阳能光伏并网系统
WO2014060302A2 (fr) 2012-10-17 2014-04-24 Sma Solar Technology Ag Onduleur avec un circuit d'adaptation pour des hautes tensions d'entrée continues variables et emploi du circuit d'adaptation
EP2863529A1 (fr) * 2013-10-15 2015-04-22 Huawei Technologies Co., Ltd. Convertisseur commutation CC/CC avec sélection de tension d'entrée et circuits LC pour élévation en résonnance et procédé d'opération
WO2019145015A1 (fr) * 2018-01-23 2019-08-01 Huawei Technologies Co., Ltd. Convertisseur électrique
DE102020007837A1 (de) 2020-12-21 2022-01-27 Daimler Ag Spannungswandler zum Laden eines elektrischen Energiespeichers eines elektrisch angetriebenen Fahrzeugs, sowie Fahrzeug und Verfahren

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10020537A1 (de) * 2000-04-27 2001-12-13 Fachhochschule Konstanz Fachbe Solarwechselrichter
DE10149282A1 (de) * 2001-10-05 2003-04-24 Siemens Ag Verfahren zur Erzeugung einer Versorgungsspannung in einem Kraftfahrzeug
DE102006010694A1 (de) * 2006-03-08 2007-09-20 Refu Elektronik Gmbh Wechselrichterschaltung für erweiterten Eingangsspannungsbereich

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10020537A1 (de) * 2000-04-27 2001-12-13 Fachhochschule Konstanz Fachbe Solarwechselrichter
DE10149282A1 (de) * 2001-10-05 2003-04-24 Siemens Ag Verfahren zur Erzeugung einer Versorgungsspannung in einem Kraftfahrzeug
DE102006010694A1 (de) * 2006-03-08 2007-09-20 Refu Elektronik Gmbh Wechselrichterschaltung für erweiterten Eingangsspannungsbereich

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103248229A (zh) * 2012-02-03 2013-08-14 英飞凌科技股份有限公司 具有开关转换器的电路装置

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DE102008030814A1 (de) 2009-12-31

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