WO2012149274A1 - Procédé et système pour commander un onduleur électrique à multiples étages - Google Patents

Procédé et système pour commander un onduleur électrique à multiples étages Download PDF

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Publication number
WO2012149274A1
WO2012149274A1 PCT/US2012/035392 US2012035392W WO2012149274A1 WO 2012149274 A1 WO2012149274 A1 WO 2012149274A1 US 2012035392 W US2012035392 W US 2012035392W WO 2012149274 A1 WO2012149274 A1 WO 2012149274A1
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WO
WIPO (PCT)
Prior art keywords
output
input
bus
converter
controller
Prior art date
Application number
PCT/US2012/035392
Other languages
English (en)
Inventor
Patrick L. Chapman
Andrew O'connell
Timothy Sams
Eric Martina
Original Assignee
Solarbridge Technologies, Inc.
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
Priority claimed from US13/095,190 external-priority patent/US9065354B2/en
Priority claimed from US13/095,179 external-priority patent/US8611107B2/en
Application filed by Solarbridge Technologies, Inc. filed Critical Solarbridge Technologies, Inc.
Priority to AU2012249559A priority Critical patent/AU2012249559B2/en
Publication of WO2012149274A1 publication Critical patent/WO2012149274A1/fr

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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
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/337—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
    • H02M3/3376—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull 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 disclosure relates, generally, to power converters for converting direct current (DC) power to alternating current (AC) power and, more particularly, to devices, systems, and methods for converting DC power to AC power suitable for supplying energy to an AC grid and/or an AC load.
  • DC direct current
  • AC alternating current
  • Power inverters convert a DC power to an AC power.
  • some power inverters are configured to convert the DC power to an AC power suitable for supplying energy to an AC grid and, in some cases, an AC load coupled to the AC grid.
  • One particular application for such power inverters is the conversion of DC power generated by an alternative energy source, such as photovoltaic cells ("PV cells” or “solar cells”), fuel cells, DC wind turbine, DC water turbine, and other DC power sources, to a single-phase AC power for delivery to the AC grid at the grid frequency.
  • PV cells photovoltaic cells
  • fuel cells DC wind turbine
  • DC water turbine DC water turbine
  • Typical photovoltaic inverters include an inverter circuit for converting DC power to AC power and a controller for controlling the functionality of the inverter circuit.
  • Some inverter circuits include an input stage and an output stage.
  • Typical inverter controllers are embodied as single stage controllers. That is, a single inverter controller controls both the input stage and the output stage of the inverter circuit.
  • a method for controlling a multi-stage inverter for converting direct current (DC) power from a DC source to alternating current (AC) power may include controlling operation of an input converter of the multi-stage inverter with a input controller and controlling operation of an output converter of the multi-stage inverter with an output controller that is separate and galvanically isolated from the input controller.
  • the method may also include transmitting data signals between the input controller and the output controller over a DC bus of the multi-stage inverter.
  • the method may also include controlling the operation of the input converter with the input controller to convert an input DC waveform to an output DC waveform, supplying the output DC waveform to a DC bus, and controlling the operation of the output converter with the output controller to converter the output DC waveform to an AC waveform. Additionally, the method may include supplying power to the input controller from the DC source.
  • the input controller may be electrically coupled to the input converter and may include (i) first sensing circuitry to sense a magnitude of an output voltage of the DC source, a magnitude of an output current of the DC source, and a magnitude of a bus voltage of the power bus and (ii) a first control module configured to generate the first plurality of switching signals based on the magnitude of the output voltage, the output current, and the bus voltage.
  • the output controller may be electrically coupled to the output converter and galvanically isolated from the input controller.
  • the output controller may include (i) second sensing circuitry to sense a magnitude of the bus voltage of the power bus (ii) a second control module configured to generate the second plurality of switching signals based on the magnitude of the bus voltage and an average power bus voltage value.
  • a method for controlling a multi-stage inverter for converting direct current (DC) power from a DC source to alternating current (AC) power may include controlling operation of an input converter of the multi-stage inverter electrically coupled to the DC bus with a input controller, controlling operation of an output converter of the multi-stage inverter electrically coupled to the DC bus with an output controller that is galvanically isolated from the input controller, and communicating data from the input controller to the output controller over the DC bus.
  • the method may include modulating a bus voltage of the
  • the method may include transmitting data from output controller to a remote device over an AC power line.
  • the input controller may be incapable of directly communicating with the output controller. Additionally or alternatively, the input controller and the output controller may communicate with each other only via the power bus. In such embodiments, the input controller may include a first communication module and the output controller may include a second communication module. The first and second communication module may be configured to communicate with each other over the power bus.
  • the DC source may be embodied as a photovoltaic (PV) module and the input controller may include a maximum power point tracking (MPPT) module configured to control the input converter to draw a maximum amount of power from the PV module.
  • the input converter may include a sense resistor electrically coupled to the PV module and the input controller includes a current sense circuit electrically coupled to the sense resistor and configured to generate a first signal indicative of a current output of the PV module.
  • the input controller may also include a voltage sense circuit electrically coupled to the PV module and configured to generate a second signal indicative of a voltage output of the PV module.
  • the input converter may include a first inverter circuit electrically coupled to the DC source, a transformer having a primary winding electrically coupled to the first inverter circuit, a rectifier circuit electrically coupled to a secondary winding of the transformer and to the power bus, and a voltage sense circuit electrically coupled to an output of the rectifier circuit and configured to generate a signal indicative of a voltage of the power bus.
  • the power bus may be embodied as a DC bus and the bus waveform may be a first DC waveform.
  • the first inverter circuit may be configured to convert the input DC waveform to a first AC waveform at a first frequency based on switching signals received from the input controller, the transformer may be configured to converter the first AC waveform to a second AC waveform at the first frequency, and the rectifier circuit may be configured to rectify the second AC waveform to produce the first DC waveform.
  • the input converter may comprise an isolated boost converter electrically connected to the DC source and the first inverter circuit. Additionally or alternatively, the input converter may comprise an active voltage clamp circuit electrically coupled to the isolated boost converter and the first inverter circuit.
  • the input controller is powered by the DC power source.
  • the input controller may include an internal power supply that generates an output voltage based on a sensed voltage of the DC power source.
  • the output converter may include an inverter circuit electrically coupled to the power bus and configured to convert the bus waveform to the output AC waveform.
  • the output controller may be configured to generate switching signals to the inverter circuit to control the operation of the inverter circuit.
  • the output controller may include a first voltage sense circuit electrically coupled to the power bus and may be configured to generate a first signal indicative of a voltage of the power bus.
  • the output controller may also include a bus voltage control module configured to control the voltage of the power bus by generating a duty cycle for the switching signals based on the first signal and an average power bus voltage value.
  • the output converter may be electrically coupled to an AC grid and further include a current sense circuit electrically coupled to an output of the inverter circuit to sense an output current of the inverter circuit.
  • the output controller may include a pulse width modulation module configured to generate the switching signals based on the sensed output current of the inverter circuit.
  • the output converter may be electrically coupled to an AC grid and include an internal power supply electrically coupled to the AC grid.
  • the output controller may also include a power line communication circuitry configured to communicate with a remote device over an AC power line in some embodiments.
  • an apparatus may include a solar panel and an inverter.
  • the solar panel may include a solar cell configured to generate a first direct current (DC) waveform in response to receiving an amount of sunlight.
  • the inverter may be coupled to the solar cell panel and configured to receive the first DC waveform and convert the first DC waveform to an output alternating current (AC) waveform.
  • DC direct current
  • AC alternating current
  • the inverter may include an input converter electrically coupled to a power bus and configured to convert the first DC waveform to a bus waveform supplied to the power bus, an output converter electrically coupled to the power bus and configured to convert the bus waveform to the output AC waveform, an input controller electrically coupled to the input converter and configured to control the operation of the input converter, and an output controller separate from the input controller and electrically coupled to the output converter.
  • the output controller may be configured to control the operation of the output converter.
  • the input controller may be incapable of directly communicating with the output controller.
  • the input controller may include a first communication module and the output controller may include a second communication module.
  • the first and second power line communication modules are configured to communicate with each other over the power bus.
  • the input converter may include a sense resistor electrically coupled to an output of the solar panel and the input controller may include (i) a current sense circuit electrically coupled to the sense resistor and configured to generate a first signal indicative of a current output of the solar panel and (ii) a voltage sense circuit electrically coupled to the output of the solar panel and configured to generate a second signal indicative of a voltage output of the solar panel.
  • the input converter may include a first inverter circuit electrically coupled to an output of the solar panel, a transformer having a primary winding electrically coupled to the first inverter circuit, a rectifier circuit electrically coupled to a secondary winding of the transformer and to the power bus.
  • the input controller may include a voltage sense circuit electrically coupled to an output of the rectifier circuit and configured to generate a signal indicative of a voltage of the power bus.
  • the input controller may include an internal power supply that generates an output voltage based on a sensed voltage of the solar panel.
  • the output converter may include an inverter circuit electrically coupled to the power bus and configured to convert the bus waveform to the output AC waveform.
  • the output controller may be configured to generate switching signals to the inverter circuit to control the operation of the inverter circuit.
  • the output controller may also include a first voltage sense circuit electrically coupled to the power bus and configured to generate a first signal indicative of a voltage of the power bus and a bus voltage control module configured to control the voltage of the power bus by generating a duty cycle for the switching signals based on the first signal and an average power bus voltage value.
  • the output converter is electrically coupled to an AC grid, the output controller comprising an internal power supply electrically coupled to the AC grid. Additionally, in some embodiments, the output controller further comprises a power line communication circuitry configured to communicate with a remote device over an AC power line.
  • an inverter may include a direct current (DC) bus, an input converter, an output converter, an input controller and an output controller galvanically isolated from the input controller.
  • the input converter may be electrically coupled to the DC bus and may include a transformer having a primary winding and a secondary winding and a first inverter circuit electrically coupled to the primary winding and configured to convert an input DC waveform to a first alternating current (AC) waveform at the primary winding based on a plurality of first switching signals.
  • the transformer may be configured to convert the first AC waveform to a second AC waveform.
  • the input converter may also include a rectifier circuit electrically coupled to the secondary winding and the DC bus. The rectifier circuit may be configured to rectify the second AC waveform to produce a second DC waveform on the DC bus.
  • the output converter may be electrically coupled to the DC bus and may include a second inverter circuit electrically coupled to the DC bus and configured to convert the second DC waveform to an output AC waveform suitable for delivery to an AC grid based on a plurality of second switching signals.
  • the input controller may be electrically coupled to the input converter to control the operation of the input converter.
  • the input controller may generate the first switching signals.
  • the output controller may be electrically coupled to the output converter to control the operation of the output converter and may generate the second switching signals.
  • the input controller and the output controller may be incapable of directly communicating data signals between each other.
  • FIG. 1 is a simplified block diagram of one embodiment a system for converting
  • FIG. 2 is a simplified block diagram one embodiment of an AC photovoltaic module of the system of FIG. 1;
  • FIG 3 is a simplified block diagram of one embodiment of an inverter of the system of FIG. 1;
  • FIG. 4 is a simplified block diagram of one embodiment of an input converter of the inverter of FIG. 3;
  • FIG. 5 is a simplified schematic of one embodiment of the input converter of
  • FIG. 4
  • FIG. 6 is a simplified block diagram of one embodiment of an input controller of the inverter of FIG. 3;
  • FIGS 7a-7c are simplified schematics of embodiments of sensing circuits of the input controller of FIG. 6;
  • FIG. 8 is a simplified flowchart of one embodiment of a method for controlling an input converter that may be executed by the input controller of FIG. 6;
  • FIG. 9 is a simplified flow chart of one embodiment of a method for controlling a power supply of the input controller of FIG. 6;
  • FIG. 10 is a simplified flow chart of one embodiment of a method for generating a switching period for the input converter of FIG. 4 that may be executed by the input controller of FIG. 6;
  • FIG. 12 is a simplified flow chart of one embodiment of a method for controlling the input converter of FIG. 4 that may be executed by the input controller of FIG. 6;
  • FIG. 13 is a simplified block diagram of one embodiment of the control modules of the input controller of FIG. 6;
  • FIG. 14 is a simplified timing diagram of pulse width modulated switching signals generated by the input controller of FIG. 6;
  • FIG. 15 is a simplified block diagram of one embodiment of an output converter of the inverter of FIG. 3;
  • FIG. 16 is a simplified schematic of one embodiment of the output converter of
  • FIG. 15
  • FIG. 17 is a simplified block diagram of one embodiment of an output controller of the inverter of FIG. 3;
  • FIG. 19 is a simplified schematic of one embodiment of a regulatory circuit of the output controller of FIG. 17;
  • FIG. 20 is a simplified schematic of one embodiment of a pulse width modulated gate drive signals generator of the output controller of FIG. 17;
  • FIG. 21 is a simplified block diagram of one embodiment of a communication logic circuit of the output controller of FIG. 17.
  • references in the specification to "one embodiment”, “an embodiment”, “an example embodiment”, etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described. [0051] Some embodiments of the disclosure, or portions thereof, may be implemented in hardware, firmware, software, or any combination thereof.
  • Embodiments of the disclosure may also be implemented as instructions stored on a tangible, machine-readable medium, which may be read and executed by one or more processors.
  • a machine-readable medium may include any mechanism for storing or transmitting information in a form readable by a machine (e.g., a computing device).
  • a machine-readable medium may include read only memory (ROM); random access memory (RAM); magnetic disk storage media; optical storage media; flash memory devices; and others.
  • FIG. 1 a system 100 for supplying alternating current
  • AC power to an AC grid 102 at a grid frequency includes a direct current (hereinafter “DC”) source 104 and an inverter 106.
  • the DC source 104 may be embodied as any type of DC source configured to generate or produce a DC power, which is supplied to the inverter 106.
  • the DC source 104 may be embodied as a photovoltaic solar cell or array, a fuel cell, a wind turbine configured to generate a DC power (e.g., via a rectifying circuit), a water turbine configured to generate a DC power, or other unipolar power source.
  • the inverter 106 is electrically connected to the DC source 104 and configured to convert a DC waveform generated by the DC source 104 to an AC waveform suitable for delivery to the AC grid 102 and, in some embodiments, loads coupled to the AC grid 102.
  • the AC grid 102 may be embodied as, for example, a utility power grid that supplies utility AC power to residential and commercial users.
  • the DC source 104 may be embodied as one or more photovoltaic cells.
  • the DC source 104 and the inverter 106 may be associated with each other so as to embody an AC photovoltaic module (ACPV) 200 as illustrated in FIG. 2.
  • the ACPV 200 includes a DC photovoltaic module (DCPV) 202, which operates as the DC source 104, electrically coupled to the inverter 106.
  • the DCPV 202 includes one or more photovoltaic cells and is configured to deliver a DC waveform to the inverter 106 in response to receiving an amount of sunlight.
  • the DC power delivered by the ACPV 200 is a function of environmental variables, such as, e.g., sunlight intensity, sunlight angle of incidence and temperature.
  • the inverter 106 is positioned in a housing of the ACPV 200.
  • the inverter 106 may include its own housing secured to the housing of the ACPV 200.
  • the inverter 106 is separate from the housing, but located near the DCPV 202.
  • the inverter 106 is configured to convert the DC power received from the DCPV 202 to an AC power suitable for delivery to the AC grid 102 at the grid frequency. It should be appreciated that multiple ACPVs 200 may be used to form a solar array with each ACPV 200 having a dedicated inverter 106.
  • the inverter 106 includes an input converter 300, a power bus 310, and an output converter 320.
  • the input converter 300 is electrically coupled to the power bus 310 and is electrically couplable to the DC source 104 as shown in FIG. 3.
  • the output converter 320 is electrically coupled to the power bus 310 and electrically couplable to the AC grid 102.
  • the inverter 106 also includes an input controller 302 and an output controller 322. It should be appreciated that the output controller 322 is separate from the input controller 302. That is, although the controllers 302, 322 may be housed in a single housing, the circuitry of the controllers 302, 322 are separate from each other.
  • the input controller 302 and the output controller 322 may be implanted on separate, individual semiconductor chips or the like. Additionally, as discussed in more detail below, it should be appreciated that the input controller 302 and the output controller 322 are galvanically isolated from each other. Further, it should be appreciated that such separation and isolation between the controllers 302, 322 may lower the overall output noise of the inverter.
  • controllers 302, 322 are separated and isolated from each other as discussed above, the controllers 302, 322 may be incapable of direct communications between each other. That is, the controllers 302, 322 may be incapable of directly communicating from one controller 302, 322 to the other controller 302, 322 without the use of intervening devices or circuitry.
  • the controllers 302, 322 may be configured to communicate with each over the power bus 310.
  • the input controller 332 may be configured to modulate data onto the waveform of the power bus 310, which is subsequently demodulated by the output controller 322.
  • the inverter 106 may include communication circuitry 324.
  • the communication circuitry 324 may be communicatively coupled to the output controller 322 or may be incorporated therein in some embodiments.
  • the output controller 322 may utilize the communication circuitry 324 to communicate with remote devices, such as remote controllers or servers.
  • the communication circuitry 324 is embodied as a power line communication circuit configured to communicate with remote devices over an AC power line, such as the AC power line interconnects coupled to the output of the output converter 320.
  • AC power line such as the AC power line interconnects coupled to the output of the output converter 320.
  • other communication technologies and/or protocols may be used.
  • the communication circuitry 324 may be embodied as a wireless or wired communication circuit configured to communicate with remote devices utilizing one or more wireless or wired communication technologies and/or protocols such as Wi-FiTM, Zigbee ® , ModBus ® , WiMAX, Wireless USB, Bluetooth ® , TCP/IP, USB, CAN-bus, HomePNATM, and/or other wired or wireless communication technology and/or protocol.
  • wireless or wired communication technologies and/or protocols such as Wi-FiTM, Zigbee ® , ModBus ® , WiMAX, Wireless USB, Bluetooth ® , TCP/IP, USB, CAN-bus, HomePNATM, and/or other wired or wireless communication technology and/or protocol.
  • the input converter 300 of the inverter 106 is configured to be electrically coupled to the DC source 104 to receive a DC waveform therefrom.
  • the input converter 300 converts the DC waveform to a bus waveform, which in the illustrative embodiment is a DC waveform but may be an AC waveform in other embodiments.
  • the output converter 320 is configured to be electrically coupled to the AC grid 102 and convert the bus waveform (i.e., either a DC waveform or an AC waveform) to the output AC waveform at the grid frequency for delivery to the AC grid 102.
  • the input controller 302 is electrically coupled to the input converter 300 and configured to control the operation of the input converter 300 to convert the input DC waveform from the DC source 104 to a bus waveform (e.g., a DC bus waveform) at the power bus 310.
  • the input controller 302 may provide a plurality of switching and/or control signals to various circuits of the input converter 300 as described in more detail below. Additionally, as discussed below, the input controller 302 may control the operation of the input converter 300 based on a maximum power point tracking ("MPPT") algorithm or methodology.
  • MPPT maximum power point tracking
  • the output controller 322 is electrically coupled to the output converter 320 and configured to control the operation of the output converter 320 to convert the bus waveform to the output AC waveform suitable for delivery to the AC grid 102.
  • the output controller 322 is configured to use a pulse width modulation algorithm to control the output converter 320 such that the output AC waveform is pulse width modulated. To do so, the output controller 322 may provide a plurality of switching and/or control signals to various circuits of the output converter 320 as described in more detail below.
  • the input converter 300 is embodied as a DC-to-DC converter.
  • the input converter 300 includes a boost converter 400, a voltage clamp 402, an inverter circuit 404, a transformer 406, and a rectifier 408.
  • the boost converter 400 is embodied as an isolated boost converter and is electrically coupled to the voltage clamp 402 and the inverter circuit 404.
  • the voltage clamp 402 is embodied as an active voltage clamp configured to clamp the voltage of the inverter circuit 404 to a predetermined maximum value based on a switching signal, qics.
  • FIG. 5 one embodiment of the input converter 300 is shown.
  • the illustrative input converter 300 is electrically coupled to the DC source 104, embodied as a photovoltaic cell, via the boost converter 400.
  • the boost converter 400 is an isolated boost converter embodied as an inductor 500.
  • the voltage clamp 402 is embodied as an active voltage clamp and includes a diode 502, a switch 504 in parallel with the diode 502, a clamp capacitor 506.
  • a passive voltage clamp may be used.
  • the voltage clamp 402 is operable to clamp the voltage of the inverter circuit 404 to a predetermined maximum voltage.
  • the inverter circuit 404 converts the DC waveform from the DC source 104 to a first AC waveform based on the switching signals received from the input controller 302.
  • the inverter circuit 404 is embodied as a full- bridge circuit.
  • the inverter circuit 404 may utilize other circuit topologies such as a half-bridge circuit, a push-pull circuit, a flyback circuit, and/or other DC- DC converter circuits may be used in other embodiments.
  • each of the switches 510, 512, 514, 516 is illustrated as MOSFET devices, other types of switches may be used in other embodiments.
  • the switching period of the input controller 302, T_s is set to the nominal switching period, T_s_nom, plus some predetermined offset amount.
  • T_s_nom the nominal switching period
  • the voltage across the transformer 406 may be modulated to carry data to the output controller 322, which may then be sensed and demodulated by the output controller 322.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

L'invention concerne un procédé pour commander un onduleur à multiples étages, qui comprend la commande d'un convertisseur d'entrée de l'onduleur à multiples étages avec un contrôleur d'entrée, et la commande d'un convertisseur de sortie de l'onduleur à multiples étages avec un contrôleur de sortie séparé du contrôleur d'entrée. Le contrôleur d'entrée et le contrôleur de sortie peuvent être à isolation galvanique. De plus, le procédé peut comprendre la communication de données entre le contrôleur d'entrée et le contrôleur de sortie par l'intermédiaire d'un bus de puissance de l'onduleur à multiples étages.
PCT/US2012/035392 2011-04-27 2012-04-27 Procédé et système pour commander un onduleur électrique à multiples étages WO2012149274A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2012249559A AU2012249559B2 (en) 2011-04-27 2012-04-27 Method and system for controlling a multi-stage power inverter

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US13/095,190 US9065354B2 (en) 2011-04-27 2011-04-27 Multi-stage power inverter for power bus communication
US13/095,179 US8611107B2 (en) 2011-04-27 2011-04-27 Method and system for controlling a multi-stage power inverter
US13/095,190 2011-04-27
US13/095,179 2011-04-27

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Publication Number Publication Date
WO2012149274A1 true WO2012149274A1 (fr) 2012-11-01

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Publication number Priority date Publication date Assignee Title
KR20210024609A (ko) * 2018-06-29 2021-03-05 엘티 라이팅 (대만) 코포레이션 단상 에너지 활용 추적 인버터
JP2021528949A (ja) * 2018-06-29 2021-10-21 エルティー ライティング （タイワン） コーポレーション 単相エネルギー利用追従インバータ
JP7252989B2 (ja) 2018-06-29 2023-04-05 エルティー・（ユーエスエイ）・コーポレーション 単相エネルギー利用追従インバータ
KR102658388B1 (ko) 2018-06-29 2024-04-16 엘티 (유에스에이), 코포레이션 단상 에너지 활용 추적 인버터

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