WO2010115725A1 - Système de commande d'une charge électrique alimenté par des sources continues - Google Patents
Système de commande d'une charge électrique alimenté par des sources continues Download PDFInfo
- Publication number
- WO2010115725A1 WO2010115725A1 PCT/EP2010/053931 EP2010053931W WO2010115725A1 WO 2010115725 A1 WO2010115725 A1 WO 2010115725A1 EP 2010053931 W EP2010053931 W EP 2010053931W WO 2010115725 A1 WO2010115725 A1 WO 2010115725A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power
- sources
- terminal
- terminals
- positive
- Prior art date
Links
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
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—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 parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising 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
-
- 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
- the present invention relates to a system for controlling an alternating electric load, such as a three-phase electric motor, the control system comprising a variable speed drive and being powered by several sources of continuous power supplies, such as photovoltaic cells. .
- a frequency converter type of frequency converter is intended to drive an alternating motor. It usually comprises an inverter module which is powered by a DC voltage delivered by a power bus and which delivers a variable frequency AC voltage to the stator windings of the motor.
- the inverter module includes controlled power switches for PWM (Pulse Width Modulation) modulation.
- the DC voltage of the power bus is usually provided by a rectifier module which is powered by an AC supply voltage from an external power supply network and which outputs a rectified voltage forming the power bus.
- the rectifier module comprises diode or thyristor bridges for rectifying the AC supply voltage. It turns out that, in some applications, the external power supply network supplying the drive controller does not provide an AC voltage but a DC voltage.
- Another solution consists in directly using the DC supply voltage as a power bus supplying the inverter module of the variator.
- This simpler solution nevertheless has the disadvantage that the variable speed drive which is used in this case is not a standard drive, which can be disadvantageous in terms of cost for small installations.
- Such a solution is for example presented in the document US7,126,294 which shows a cell photovoltaic whose output terminals are connected to the power bus supplying the inverter module of a variable speed drive.
- this solution does not allow to simply manage the case where the external power network comprises several parallel continuous power sources. Indeed, since some energy sources, such as photovoltaic cells, do not have a constant operation since they depend on the sunlight received by the cell, it may therefore be desirable to have several parallel power sources for better availability of the installation.
- the object of the invention is therefore to propose a simple and economical solution that allows a standard drive controller to be fed by several sources of continuous power supplies, without adding additional components and without requiring modification of the drive, in order to control an electric motor.
- the invention describes a system for controlling an AC electrical load, comprising a variable speed drive which comprises a rectifier module provided with a plurality of power supply terminals and providing a DC voltage between a positive line and a negative line of a power bus, and which comprises an inverter module powered by the power bus and providing a variable voltage to the AC electrical load.
- the control system comprises a plurality of DC power supply sources each comprising a positive terminal and a negative terminal, the positive terminal of each DC power source being connected to a separate supply terminal of the rectifier module and the negative terminals of the DC power sources being connected to the negative line of the power bus.
- the control system comprises a plurality of DC power supply sources each comprising a positive and a negative terminal, the negative terminal of each DC power source being connected to a separate supply terminal of the rectifier module. and the positive terminals of the DC power sources being connected to the positive line of the power bus
- the rectifier module comprises several parallel branches connected between the positive line and the negative line of the power bus, each branch comprising two diodes in series, each power supply terminal of the drive being respectively connected to a midpoint between the diodes of the rectifier module.
- FIG. 1 shows a simplified architecture of a control system According to variant A of the invention
- FIG. 2 shows a simplified architecture of a control system according to variant B of the invention
- FIG. 3 represents another embodiment of FIG. 1.
- a control system is intended to control an electrical load, in this case a three-phase electric motor M.
- the control system comprises a frequency converter 10, of the frequency converter type, which delivers a voltage alternating variable frequency motor to an inverter module 12 having three branches each provided with two 28,29 power switches in series. These power switches are for example IGBTs (Insulated Gate Bipolar Transistor), field effect power transistors (FETs) or the like and are controlled by a drive control unit 10 (not shown).
- the branches of the inverter module 12 are powered by a power bus having a DC voltage between a positive line 14 and a negative line 15.
- variable speed drive 10 Upstream of the inverter module 12, the variable speed drive 10 also comprises a rectifier module 1 1 which delivers a DC voltage between the positive line 14 and the negative line 15 of the power bus.
- a bus capacitor 13 is generally placed between the rectifier module 1 1 and the inverter module 12 and is connected between the positive line 14 and the negative line 15.
- the rectifier module 11 of a variable speed drive 10 is powered by an external power supply network which generally provides an alternating voltage that can be single-phase or three-phase, depending on the applications.
- the rectifier module 1 1 comprises several parallel branches, each branch being composed of two diodes 26, 27 in series and being connected between the positive line 14 and the negative line 15 of the power bus.
- the midpoint between diodes 26 and 27 each branch of the rectifier module 1 1 is called M1, M2, M3.
- the upper diodes 26 have their cathode which is connected on the positive line side 14 and their anode which is connected to a midpoint.
- the lower diodes 27 have their anode which is connected to the side of the negative line 15 and their cathode which is connected to a midpoint.
- the diodes 26, 27 may be replaced by other switching components such as thyristors in particular.
- the number of branches of the rectifier module 1 1 depends on the number of phases of the supply voltage of the external network.
- the rectifier module 1 1 has three parallel branches and has three alternative supply terminals L1, L2, L3, each alternative supply terminal being intended for be connected to one of the three phases of the three-phase supply voltage.
- the three supply terminals L1, L2, L3 are respectively connected to a midpoint M1, M2, M3 between the diodes 26 and 27 of each branch of the rectifier module 1 1, as shown in FIG.
- the rectifier module 1 1' has only two parallel branches and has two alternative supply terminals L1, L2, each AC supply terminal being intended to be connected to one of the two phases (or phase - neutral) of the supply voltage.
- the two supply terminals L1, L2 are respectively connected to a midpoint M1, M2 between the diodes 26 and 27 of each branch of the rectifier module 1 1 ', as indicated in FIG.
- the object of the invention is to provide a simple and economical solution for applications where a standard drive controller is powered not by a single-phase or three-phase AC supply voltage, but by several continuous power sources, composed for example of several photovoltaic cells or solar panels.
- the control system shown in FIGS. 1 and 2 thus comprises three DC power supply sources 21, 22, 23 or 21 ', 22', 23 'intended to feed the variator 10.
- Each DC power supply has a positive terminal and a negative terminal and is composed of one or more photovoltaic cells connected in series with each other, for the purpose of providing a voltage level sufficient in the power bus of the drive 10.
- each power source is composed of four cells connected in series.
- the negative terminals of the supply sources 21, 22, 23 are all connected in common to a common terminal which is directly connected to the negative line 15 of the power bus, also called PC terminal.
- This PC terminal is an existing terminal that is available in standard variable speed drives and is therefore very easy to use.
- the three supply terminals L1, L2, L3 are not connected to the different phases of an AC power source as in the case of usual use of the drive 10, but are directly connected to the positive terminal of each of the three DC power sources, without any modification of the inverter 10, the negative terminals of the DC power sources being connected together to the negative line 15 of the power bus.
- the positive terminals of the supply sources 21, 22, 23 are respectively connected to the middle points M1, M2, M3 of the branches of the rectifier module 1 1, they are therefore connected to the positive line 14 of the power bus via the upper diodes 26 each branch of the rectifier module 1 1.
- the upper diodes 26 of each branch of the rectifier module 11 avoid a loopback and a short circuit of this faulty power source (anti-return function).
- the control system comprises three DC feeders 21 ', 22', 23 ', similar to the sources 21, 22, 23 of the Figure 1 but connected differently. Indeed, it is now the negative terminal of each DC power source 21 ', 22', 23 'which is respectively connected to a corresponding power supply terminal L1, L2, L3 of the rectifier module 1 1. Positive terminals power sources 21 ', 22', 23 'are then all connected in common to a common terminal which is directly connected to the positive line 14 of the power bus, also called terminal PA.
- This PA terminal is an existing terminal that is available in standard variable speed drives.
- the three power supply terminals L1, L2, L3 are not connected to the different phases of an AC power source as in the case of usual use of the drive 10, but are directly connected to the negative terminal of each of the three DC power sources, without any modification of the drive 10, the positive terminals of the DC power sources being connected together to the positive line 14 of the power bus.
- the negative terminals of the power supply sources 21 ', 22', 23 ' are respectively connected to the middle points M1, M2, M3 of the branches of the rectifier module 1 1, they are therefore connected to the negative line 15 of the power bus via the lower diodes 27 of each branch of the rectifier module 11.
- the lower diodes 27 of each branch of the rectifier module 1 1 avoid loopback and a short circuit of this faulty power source.
- Both variants A and B can be used with the same drive 10 because the terminals PA and PC are both available in a standard drive.
- This simple solution therefore makes it possible to feed a standard variable speed drive from several continuous power sources, without the drawbacks mentioned and without the need to add components to isolate the various continuous power sources.
- These two variants belong to the same invention since they solve the same technical problem by using identical technical means, the only difference coming from the direction of connection of the power sources to the variator 10.
- the drive 10 is a three-phase inverter which comprises three supply terminals L1, L2, L3 connected respectively to the midpoint M1, M2, M3 of the three branches of the rectifier module 1 1, and the system control unit comprises three sources of continuous power supplies 21, 22, 23 or 21 ', 22', 23 'respectively connected to the three power supply terminals.
- the inverter 10 ' is a single-phase inverter which therefore comprises only two supply terminals L1, L2 connected respectively to the midpoint M1, M2 of the two branches of the rectifier module 1 1', and the control comprises two DC power supply sources 21, 22, whose positive terminals are respectively connected to the two power supply terminals.
- Figure 3 is similar to variant A of Figure 1, that is to say with a common connection to the negative line 15 of the power bus, but it is obvious that one could also transpose the case of the Figure 3 to variant B of Figure 2, that is to say with a common connection to the positive line 14 of the power bus.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES10710057.0T ES2593826T3 (es) | 2009-04-08 | 2010-03-25 | Sistema de control de una carga eléctrica alimentado por fuentes de corriente continua |
BRPI1015961-4A BRPI1015961B1 (pt) | 2009-04-08 | 2010-03-25 | Sistema de comando de uma carga elétrica alimentado por fontes contínuas |
CN2010800144760A CN102379080A (zh) | 2009-04-08 | 2010-03-25 | 用于控制由dc电源供电的电负荷的系统 |
EP10710057.0A EP2417698B1 (fr) | 2009-04-08 | 2010-03-25 | Système de commande d'une charge électrique alimenté par des sources continues |
ZA2011/05927A ZA201105927B (en) | 2009-04-08 | 2011-08-12 | System for controlling an electric charge powered by dc sources |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0952280A FR2944397B1 (fr) | 2009-04-08 | 2009-04-08 | Systeme de commande d'une charge electrique |
FR0952280 | 2009-04-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010115725A1 true WO2010115725A1 (fr) | 2010-10-14 |
Family
ID=40933519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/053931 WO2010115725A1 (fr) | 2009-04-08 | 2010-03-25 | Système de commande d'une charge électrique alimenté par des sources continues |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP2417698B1 (fr) |
CN (1) | CN102379080A (fr) |
BR (1) | BRPI1015961B1 (fr) |
ES (1) | ES2593826T3 (fr) |
FR (1) | FR2944397B1 (fr) |
WO (1) | WO2010115725A1 (fr) |
ZA (1) | ZA201105927B (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006050878A1 (fr) * | 2004-11-11 | 2006-05-18 | Ksb Aktiengesellschaft | Convertisseur de frequence standard pour acheminement discontinu d'energie |
US7126294B2 (en) | 2002-01-31 | 2006-10-24 | Ebara Corporation | Method and device for controlling photovoltaic inverter, and feed water device |
EP1986306A1 (fr) * | 2006-01-27 | 2008-10-29 | Sharp Kabushiki Kaisha | Systeme d'alimentation |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5401003B2 (ja) * | 2006-01-27 | 2014-01-29 | シャープ株式会社 | 太陽光発電システム |
CN1862942A (zh) * | 2006-06-07 | 2006-11-15 | 清华大学 | dP/dV-I近线性的光伏发电系统最大功率点跟踪法 |
CN100508327C (zh) * | 2007-06-08 | 2009-07-01 | 清华大学 | 一种快速稳定实现最大功率跟踪的光伏三相并网控制方法 |
CN101237150A (zh) * | 2008-02-29 | 2008-08-06 | 中山大学 | 高效光伏并网与混合有源电力滤波器一体化装置 |
-
2009
- 2009-04-08 FR FR0952280A patent/FR2944397B1/fr active Active
-
2010
- 2010-03-25 CN CN2010800144760A patent/CN102379080A/zh active Pending
- 2010-03-25 BR BRPI1015961-4A patent/BRPI1015961B1/pt active IP Right Grant
- 2010-03-25 WO PCT/EP2010/053931 patent/WO2010115725A1/fr active Application Filing
- 2010-03-25 ES ES10710057.0T patent/ES2593826T3/es active Active
- 2010-03-25 EP EP10710057.0A patent/EP2417698B1/fr active Active
-
2011
- 2011-08-12 ZA ZA2011/05927A patent/ZA201105927B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7126294B2 (en) | 2002-01-31 | 2006-10-24 | Ebara Corporation | Method and device for controlling photovoltaic inverter, and feed water device |
WO2006050878A1 (fr) * | 2004-11-11 | 2006-05-18 | Ksb Aktiengesellschaft | Convertisseur de frequence standard pour acheminement discontinu d'energie |
EP1986306A1 (fr) * | 2006-01-27 | 2008-10-29 | Sharp Kabushiki Kaisha | Systeme d'alimentation |
Also Published As
Publication number | Publication date |
---|---|
BRPI1015961A2 (pt) | 2016-05-31 |
BRPI1015961A8 (pt) | 2017-10-17 |
EP2417698A1 (fr) | 2012-02-15 |
EP2417698B1 (fr) | 2016-07-06 |
FR2944397B1 (fr) | 2011-04-22 |
BRPI1015961B1 (pt) | 2019-06-04 |
FR2944397A1 (fr) | 2010-10-15 |
CN102379080A (zh) | 2012-03-14 |
ZA201105927B (en) | 2012-11-28 |
ES2593826T3 (es) | 2016-12-13 |
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