WO2017195213A1 - Integration of multiple power source with optimization of power source and load conditions - Google Patents

Integration of multiple power source with optimization of power source and load conditions Download PDF

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Publication number
WO2017195213A1
WO2017195213A1 PCT/IN2017/000102 IN2017000102W WO2017195213A1 WO 2017195213 A1 WO2017195213 A1 WO 2017195213A1 IN 2017000102 W IN2017000102 W IN 2017000102W WO 2017195213 A1 WO2017195213 A1 WO 2017195213A1
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WO
WIPO (PCT)
Prior art keywords
source
power
bus
power source
load
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/IN2017/000102
Other languages
French (fr)
Inventor
Siddharth Rajendra MAYUR
Amarnath Ashok CHAKRADEO
Girish Nandkumar JADHAV
Ankur Suresh POTDAR
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.)
H2e Power Systems Pvt Ltd
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H2e Power Systems Pvt Ltd
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Filing date
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Application filed by H2e Power Systems Pvt Ltd filed Critical H2e Power Systems Pvt Ltd
Publication of WO2017195213A1 publication Critical patent/WO2017195213A1/en
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
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for DC mains or DC distribution networks
    • H02J1/10—Parallel operation of DC sources
    • H02J1/102—Parallel operation of DC sources being switching converters
    • 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
    • H02J2101/40—Hybrid power plants, i.e. a plurality of different generation technologies being operated at one power plant

Definitions

  • the present disclosure relates to multiple power sources more particularly relates, to a platform for integrating She multiple power source and optimizing the power source and load conditions.
  • mu lti-input power system use a grid power supply and at least one other renewable source of energy to provide a hybrid/multi-input power system. Further, tew multi-input systems integrate different renewable power/energy sources along with the grid power source to fulfill the power requirement at load. These systems may comprise multi-input power converter, a battery bank and a dynamic voltage restorer .
  • the multi-input power svstem at present may generate DC pow er from the power source for a DC load by using a DC bus.
  • these systems can store surplus power in a battery bank and also provide AC power to an AC load by way of an AC bits or to an AC grid.
  • these systems do no ) control the multi-input power source nor do they control the load.
  • a system for integrating multiple power sources and to optim ize power source and load cond itions is di sclosed .
  • the system may comprise a plural ity of power source.
  • the system may further comprise a D C bus electrically coupled w ith rise plurality of power source.
  • the system may comprise a control unit electrically coupled with the D C bus, wherein the control unit as at least two side, a first side and a second side, wherein the first side is connected to the source side and the second side connected to a load side
  • T he system may comprise a D C bus. Further the D C bus may be coupled to a plurality of power sources, wherein the plurality of power sources may comprise solar power source, wind power source, battery inverter source, a fuel cell, and a power grid source.
  • the system may further comprise a control unit electrically coupled with the D C bus at source side, and connected with the foad on a load side, wherein the control unit is configured to control the source and the load.
  • Figure 1 illustrates a schematic representation in accordance with exemplary embodiment of the present d isc losure.
  • Figure 2a illustrates a schematic representation for multistage converter during startup in accordance with exemplary embodiment of the present disclosure.
  • Figure 2b illustrates a schematic representation for multistage converter during normal operation in accordance with exemplary embodiment of the present disclosure.
  • a system for integrating multiple power sources is disclosed.
  • the system further enables optimization of the power source and the load conditions.
  • the system enables integration of plurality of power sources like wind, solar. Fuel cel l and battery banks to be integrated on a platform. Further the platform can be configured to extract power from one or more of the power source from the plurality of power sources, based on pre-defined parameters. The parameters may be based on reliability of the power source at the time, or the availability of the power source, or the cost of power source. For e.g. if the load on the system requires power during the day. then the system will seek power from solar and wind in order to reduce the cost of power generation and there availabi lity during the day; similarly if the load increase during the night, the system may use power from Wind, and either batteiy bank or fuel cell or both.
  • the system may be able to control the load acting on the system.
  • the system might segregate the loads into critical load and non-critical load.
  • the segregation of load into critical or non-critical maybe based on factors defined by an user or based on historical data.
  • the ability of the system to integrate plurality of power sources on the single platform and control the power generation and extract from each of the power source and further control the power distribution to the critical and noin-critica! load enables the system to provide hol istic system for optimizing power generation, power supply, and power distribution in hybrid power system.
  • the system 100 may comprise a plurality of power sources.
  • the plurality of power sources may comprise a solar power source 102, a wind power source 104, a battery inverter source 108, a fuel cell source 1 10, and a grid source 1 12.
  • the battery inverter source 108 may further comprise a battery bank 114 having a plurality of battery units.
  • the plurality of power sources generate and provide power to the system 100.
  • each power source from the plurality of power sources may be electrically coupled/connected to a D C bus 116, the D C bus 116 may be of 400 V DC power capacity .
  • the solar power source 102 may be connected to the D € bus 116 via maximum power point tracking module (MPPTT) 118. Further the ⁇ T 1 18 may boost the low voltage DC power to high voltage DC for efficient DC to AC conversion.
  • MPPTT maximum power point tracking module
  • the wind power source 104 may be connected to the DC bus 1 16, via a first boost convenor 106. Further, the battery power source 108 may be connected to the DC bus 1 16 and be configured to store excess of power generated or as a dump load.
  • the batter/ bank 114 of the battery power source may be charged when the excess power from the plurality of power sources is routed to the battery power source 308, or when it is acting as a dump load.
  • the battery bank 1 14, may be charged using a charge equalization to achieve balancing of battery bank 1 14 in terms of voltage and charge, wherein each battery unit from the battery bank has an Individual Cell Charger (ICC). Further the battery bank 1 14 discharges back to the D C bus 1 16 via a DC -DC boost converter 1 20, wherein the DC-DC boost convenor is unidirectional and boost voltage from 96 Volts to 400 Volts.
  • ICC Individual Cell Charger
  • the fuel cel l 110 may be connected to the D C bus 1 16 via a second boost converter 122.
  • the second boos; converter 122 may use DC-DC boost converter topology to boost fuel cel l 1 10 output voltage from 0-60 VDC to 400VDC .
  • the boosted power cars be used to maintain stable bus voltage.
  • Further fuel cell 110 may be connected to multistage convenor 124.
  • the multistage converter 124 may further be connected to balance of plant components (BoP) 126 and an electric air pre-heater (EAPH) 128.
  • BoP plant components
  • EAPH electric air pre-heater
  • the multistage converter 124 may works in. two modes, a high voltage DC mode, and a stack power mode. Further the multistage convenor 124 may work in at least four mode,, a start-up mode, a high voltage mode, a stack power mode, and a dump load mode. Further during start up, the multistage convenor 124 powers up balance of plant of fuel cell via DC bus and electric air pre-heater via mains as shown in Figure 2(a). During normal operation multistage convenor 524 has the capability of extracting power directly from fuel cell and hence feeds power to BoP 126 as well as EA PH 128 as dump load thus elim inating the need of two conversion stages.
  • the system according to the disclosure may comprise a D C bus.
  • the D C bus may be coupled with a plural ity of power sources.
  • the power sources may be solar power source, wind power source, a battery inverter source, and a fuel cel l.
  • the D C bus may further be connected to a power grid and load side/power requirement side.
  • each power source may be given a pr iority based on the cost associated lor power generation from the respective power source arid the availability.
  • the cos! associated with the solar power may be Rs. I /Watt, simiarly for the wind power source it may be Rs. 2/watt, for battery inverter it may be Rs. 3/waU, and for the Fuel cel l is may be Rs. 4/watt.
  • each power source may have a defined power generation capacity like the solar power source may have 1 000 watt, the wind source may have 500 watt, the battery investor may have 2400 watt and the Fuel cel l may have 1 200 watt.

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

Abstract

The present disclosure discloses a system for integrating multiple power sources and to optimize power source and load conditions. The system may comprise a plurality of power source. The system may further comprise a D C bus electrically coupled with the plurality of power source. Further the system may comprise a control unit electrically coupled with the D C bus, wherein the control unit as at least two side, a first side and a second side, wherein the first side is connected to the source side and the second side connected to a load side.

Description

INTEG RATION OF M U LTI PLE POWER SOURCE WITH OPTIM IZATION OF POWER SOURCE AND LOAD CON DI TIONS
TECHNICA L FIELD
[0001] The present disclosure relates to multiple power sources more particularly relates, to a platform for integrating She multiple power source and optimizing the power source and load conditions.
BACKGROUN D
[0001] At present mu lti-input power system use a grid power supply and at least one other renewable source of energy to provide a hybrid/multi-input power system. Further, tew multi-input systems integrate different renewable power/energy sources along with the grid power source to fulfill the power requirement at load. These systems may comprise multi-input power converter, a battery bank and a dynamic voltage restorer .
[0003] The multi-input power svstem at present may generate DC pow er from the power source for a DC load by using a DC bus. Moreover, these systems can store surplus power in a battery bank and also provide AC power to an AC load by way of an AC bits or to an AC grid. However, these systems do no) control the multi-input power source nor do they control the load.
SUMMAR Y
[0004] In an implementation of the present disclosure a system for integrating multiple power sources and to optim ize power source and load cond itions is di sclosed . The system may comprise a plural ity of power source. The system may further comprise a D C bus electrically coupled w ith rise plurality of power source. Further the system may comprise a control unit electrically coupled with the D C bus, wherein the control unit as at least two side, a first side and a second side, wherein the first side is connected to the source side and the second side connected to a load side
[0005] I n another implementation system for optimization of power at source and load is disclosed. T he system may comprise a D C bus. Further the D C bus may be coupled to a plurality of power sources, wherein the plurality of power sources may comprise solar power source, wind power source, battery inverter source, a fuel cell, and a power grid source. The system may further comprise a control unit electrically coupled with the D C bus at source side, and connected with the foad on a load side, wherein the control unit is configured to control the source and the load.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] The detailed description is described with reference to the accompanying figures.
[0007] Figure 1 , illustrates a schematic representation in accordance with exemplary embodiment of the present d isc losure.
[0008] Figure 2a, illustrates a schematic representation for multistage converter during startup in accordance with exemplary embodiment of the present disclosure.
[0009] Figure 2b. illustrates a schematic representation for multistage converter during normal operation in accordance with exemplary embodiment of the present disclosure.
DETAILED DESCRIPTION OF THE INVENTION
[0010] A system for integrating multiple power sources is disclosed. The system further enables optimization of the power source and the load conditions.
[0011] According to the present disclosure the system enables integration of plurality of power sources like wind, solar. Fuel cel l and battery banks to be integrated on a platform. Further the platform can be configured to extract power from one or more of the power source from the plurality of power sources, based on pre-defined parameters. The parameters may be based on reliability of the power source at the time, or the availability of the power source, or the cost of power source. For e.g. if the load on the system requires power during the day. then the system will seek power from solar and wind in order to reduce the cost of power generation and there availabi lity during the day; similarly if the load increase during the night, the system may use power from Wind, and either batteiy bank or fuel cell or both. [0012] F urther according to the present disclosure the system may be able to control the load acting on the system. The system might segregate the loads into critical load and non-critical load. The segregation of load into critical or non- critical maybe based on factors defined by an user or based on historical data. The ability of the system to integrate plurality of power sources on the single platform and control the power generation and extract from each of the power source and further control the power distribution to the critical and noin-critica! load enables the system to provide hol istic system for optimizing power generation, power supply, and power distribution in hybrid power system.
[0013] Referring to Figure 1 illustrates a system in accordar.ee with the present disclosure. The system 100 may comprise a plurality of power sources. The plurality of power sources may comprise a solar power source 102, a wind power source 104, a battery inverter source 108, a fuel cell source 1 10, and a grid source 1 12. The battery inverter source 108 may further comprise a battery bank 114 having a plurality of battery units. The plurality of power sources generate and provide power to the system 100.
[0014] In an exemplary embodiment of the present disclosure each power source from the plurality of power sources may be electrically coupled/connected to a D C bus 116, the D C bus 116 may be of 400 V DC power capacity . The solar power source 102 may be connected to the D€ bus 116 via maximum power point tracking module (MPPTT) 118. Further the ΜΡΡT 1 18 may boost the low voltage DC power to high voltage DC for efficient DC to AC conversion.
[0015] The wind power source 104 may be connected to the DC bus 1 16, via a first boost convenor 106. Further, the battery power source 108 may be connected to the DC bus 1 16 and be configured to store excess of power generated or as a dump load. The batter/ bank 114 of the battery power source may be charged when the excess power from the plurality of power sources is routed to the battery power source 308, or when it is acting as a dump load. The battery bank 1 14, may be charged using a charge equalization to achieve balancing of battery bank 1 14 in terms of voltage and charge, wherein each battery unit from the battery bank has an Individual Cell Charger (ICC). Further the battery bank 1 14 discharges back to the D C bus 1 16 via a DC -DC boost converter 1 20, wherein the DC-DC boost convenor is unidirectional and boost voltage from 96 Volts to 400 Volts.
[0016] In the exemplar;/ embodiment the fuel cel l 110 may be connected to the D C bus 1 16 via a second boost converter 122. The second boos; converter 122 may use DC-DC boost converter topology to boost fuel cel l 1 10 output voltage from 0-60 VDC to 400VDC . The boosted power cars be used to maintain stable bus voltage. Further fuel cell 110 may be connected to multistage convenor 124. The multistage converter 124 may further be connected to balance of plant components (BoP) 126 and an electric air pre-heater (EAPH) 128.
[0017] Referring to Figure 2a and 2b the multistage converter 124 may works in. two modes, a high voltage DC mode, and a stack power mode. Further the multistage convenor 124 may work in at least four mode,, a start-up mode, a high voltage mode, a stack power mode, and a dump load mode. Further during start up, the multistage convenor 124 powers up balance of plant of fuel cell via DC bus and electric air pre-heater via mains as shown in Figure 2(a). During normal operation multistage convenor 524 has the capability of extracting power directly from fuel cell and hence feeds power to BoP 126 as well as EA PH 128 as dump load thus elim inating the need of two conversion stages.
Working Example
[0018] The following write-up illustrates an exemplary embodiment in accordance with the present disclosure. The system according to the disclosure may comprise a D C bus. The D C bus may be coupled with a plural ity of power sources. The power sources may be solar power source, wind power source, a battery inverter source, and a fuel cel l. The D C bus may further be connected to a power grid and load side/power requirement side.
[0019] Further each power source may be given a pr iority based on the cost associated lor power generation from the respective power source arid the availability. For e.g. the cos! associated with the solar power may be Rs. I /Watt, simiarly for the wind power source it may be Rs. 2/watt, for battery inverter it may be Rs. 3/waU, and for the Fuel cel l is may be Rs. 4/watt. [0020] Further each power source may have a defined power generation capacity like the solar power source may have 1 000 watt, the wind source may have 500 watt, the battery investor may have 2400 watt and the Fuel cel l may have 1 200 watt.
[0021] In an exemplary scenario if the power required at load side is 1500 watt during day, then as per the present disclosure the first priority would be given to solar power source followed by the wind power source, and then by the battery power source.
[0022] However, during evening time when neither solar power ot the wind power source are not available, the priority would be given to the battery inverlor power source and fuel cell power source, then followed by the solar and the w ind power source.
[0023] In yet another scenario if the combined power of the plurality of power sources at a given moment is not sufficient to meet the load requirement, the system then might segregate the load into critical load and non-critical load, thereby managing the load side.

Claims

We Claim:
1. A system comprising:
a plurality of power source, wherein the plurality of power are distinct from each other;
a D C bus electrically coupled with the plurality of power source, wherein the DC bus is further connected to 3 source side; and
a control unit electrically coupled with the D C bus, wherein the control unit as at least two side, a first side and a second side, wherein the first side is connected to the source side and the second side connected to a load side.
2. The system as claimed in claim 1 , wherein the control unit is configured to control the source side and the load side.
3. The system as claimed in claim 1 , wherein the load side further comprises a plurality of critical loads and a plurality of non-critical loads.
4. The system as claimed in claim 1 , wherein the plurality of power source further comprises at least one of solar power source, wind ' power source, battery inverter source, or a fuel cel l.
5. The system as claimed in claim 4 , wherein the solar power source is electrically coupled with the D C bus via maximum power point tracking module (MPPT).
6. The system as claimed in claim 4, wherein the wind power source is electrically coupled with the D C b bus via first boost convenor to convert low D C voltage to high D C voltage.
7. The system as claimed in claim 4. wherein the battery inverter source is charged via the D C bus using a charge equalization to achieve balancing of battery bank, in the battery inverter source, in terms of voltage and charge, wherein each battery celt from the battery bank has an individual Cell Charger (ICC).
8. The system as claimed in claim 7, wherein the battery inverter discharges back to the D C bus via a DC -DC boost convertor, wherein the DC -DC boost converter is unidirectional and boost voltage from 96 Volts to 400 Volts.
9. The system as claimed in claim 4. wherein the fuel cell is connected to the D C bus via at least one ot second boost converter, BoP multistage convenor, or electric air pre-heater (EAPH) multistage convenor.
1 0. The system as cla imed in claim 9, wherein the BoP multistage convertor works in at least two modes, a high voltage DC mode, and a stack power mode,
1 1. The system as claimed in claim 9, wherein the EAPH multistage convenor works in at least four mode, a start-up mode, a high voltage mode, a stack power mode, and a dump load mode.
12. A system for optimization of power at source and load, the system comprising:
a D C bus;
a plurality of power sources electrically coupled with the D C bus, wherein the plurality of power sources comprises solar power source, wind power source, battery inverter sOurce, a fuel cell, and a power grid source; and
a control unit electrically coupled with the D C bus at source side, and connected with the load on a load side, wherein the control unit is configured to control the source and the load.
13. The system of claim 1 2, wherein the load is segregated into critical load and non-critical load .
14. The system of claim 13, wherein the control unit is configured to distribute the power to the critical load and the non -critical load based on availability of the source,
15. The system of claim 12, wherein the control unit is further configured to prioritize generation of power from the plurality of power source based on pre-defined parameters.
16. The system of claim 1 5, wherein the pre-defined parameter comprises of reliability, cost and availability.
1 7. The system as claimed in claim 12, wherein the solar power source, is electrically coupled with the D C bus via maximum power point tracking module (MPPT).
1 8. The system as claimed in claim 12, wherein the wind power source is electrically coupled with the D C bus via tlrst boost convenor to convert low D C voltage to high D C voltage.
19. The system as claimed in claim 12. wherein the battery inverter source is charged via the D C bus using a charge equalization to achieve balancing of battery bank, in the battery inverter source, in terms of voltage and charge, wherein each battery cell from the battery bank has an individual Cell Charger (ICC).
20. The system as claimed in claim 19, wherein the battery inverter d ischarges back to the D C bus v ia a DC -DC boost converter, wherein the DC -DC boost convenor is unidirectional and boost voltage from 96 Volts to 400 Volts.
21 . The system as claimed in claim 12, wherein, the fuel cell is connected to the D C bus via as least one of second boost convertor. BoP m ultistage converter, or electric air pre-heater (EAPH) multistage convertor.
22. The system as claimed in claim 21 , wherein the BoP multistage convenor works in at least two modes, a high voltage DC mode, and a stack power . mode.
23. The system as claimed in claim 2 1 , wherein the EAPH multistage convenor works in at least four mode, a start-up mode, a high voltage mode, a stack power mode, and a dump load mode.
PCT/IN2017/000102 2016-05-12 2017-05-12 Integration of multiple power source with optimization of power source and load conditions Ceased WO2017195213A1 (en)

Applications Claiming Priority (2)

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IN201621016652 2016-05-12
IN201621016652 2016-05-12

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040135545A1 (en) * 2002-11-25 2004-07-15 Tiax, Llc Bidirectional power converter for balancing state of charge among series connected electrical energy storage units
US20040155526A1 (en) * 2003-02-07 2004-08-12 Mark Naden Generator with DC boost and split bus bidirectional DC-to-DC converter for uninterruptible power supply system or for enhanced load pickup
US20090160258A1 (en) * 2007-12-21 2009-06-25 James Allen Advanced Renewable Energy Harvesting
US7728562B2 (en) * 2007-07-27 2010-06-01 Gm Global Technology Operations, Inc. Voltage link control of a DC-AC boost converter system
US20100136379A1 (en) * 2008-12-02 2010-06-03 Robert Dean King Apparatus for high efficiency operation of fuel cell systems and method of manufacturing same
US20120071044A1 (en) * 2007-11-25 2012-03-22 Rembach Paul F System for operating a vessel
US20130041516A1 (en) * 2011-08-12 2013-02-14 Rocky Research Intelligent microgrid controller
US20150229131A1 (en) * 2014-02-13 2015-08-13 Nextronex, Inc. Grid tie solar inverter system with storage

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040135545A1 (en) * 2002-11-25 2004-07-15 Tiax, Llc Bidirectional power converter for balancing state of charge among series connected electrical energy storage units
US20040155526A1 (en) * 2003-02-07 2004-08-12 Mark Naden Generator with DC boost and split bus bidirectional DC-to-DC converter for uninterruptible power supply system or for enhanced load pickup
US7728562B2 (en) * 2007-07-27 2010-06-01 Gm Global Technology Operations, Inc. Voltage link control of a DC-AC boost converter system
US20120071044A1 (en) * 2007-11-25 2012-03-22 Rembach Paul F System for operating a vessel
US20090160258A1 (en) * 2007-12-21 2009-06-25 James Allen Advanced Renewable Energy Harvesting
US20100136379A1 (en) * 2008-12-02 2010-06-03 Robert Dean King Apparatus for high efficiency operation of fuel cell systems and method of manufacturing same
US20130041516A1 (en) * 2011-08-12 2013-02-14 Rocky Research Intelligent microgrid controller
US20150229131A1 (en) * 2014-02-13 2015-08-13 Nextronex, Inc. Grid tie solar inverter system with storage

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