Title:
INVERTER OF PHOTOVOLTAIC GRID-CONNECTED POWER GENERATION SYSTEM, STARTING DEVICE AND METHOD, AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/035571
Kind Code:
A1
Abstract:
Disclosed in the present application are an inverter of a photovoltaic grid-connected power generation system, a starting device and method, and a photovoltaic grid-connected power generation system, for being applied to the technical field of photovoltaic power generation. The inverter comprises an inverter grid-connected unit, an alternating current auxiliary power supply, and a starting device; the alternating current auxiliary power supply is used for converting the alternating current of an alternating current grid into direct current; the input end of the inverter grid-connected unit is connected to a bus capacitor; the starting device is used for providing the direct current for the bus capacitor after the alternating current obtained from the alternating current grid is converted into the direct current so as to start the inverter grid-connected unit, or obtaining the direct current from the alternating current auxiliary power supply and providing the direct current for the bus capacitor so as to start the inverter grid-connected unit. By using the inverter provided by the embodiments of the present application, the photovoltaic grid-connected power generation system still can be normally started when there is no sufficient sunshine or no sunshine, so that the scheduling of the photovoltaic grid-connected power generation system can be normally performed.
Inventors:
CAO ZHEN (CN)
ZHANG YANZHONG (CN)
GAO YONGBING (CN)
ZHANG YANZHONG (CN)
GAO YONGBING (CN)
Application Number:
PCT/CN2019/103019
Publication Date:
March 04, 2021
Filing Date:
August 28, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02M1/36; H02J3/38
Foreign References:
| CN208257654U | 2018-12-18 | |||
| CN106033895A | 2016-10-19 | |||
| CN104348347A | 2015-02-11 | |||
| CN202906774U | 2013-04-24 | |||
| US10218261B2 | 2019-02-26 |
Other References:
See also references of EP 3937363A4
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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