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Patent Searching and Data


Title:
NEUTRAL POINT CLAMPED INVERTER AND PHOTOVOLTAIC POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/110685
Kind Code:
A1
Abstract:
The present application provides a neutral point clamped inverter and a photovoltaic power supply system. The neutral point clamped inverter can comprise a power source module, a switch module, and a control module. The power source module can comprise a power source, and a first capacitor and a second capacitor which are connected in series and then connected in parallel to two ends of the power source. The switch module can comprise a first switch unit, a second switch unit, and a third switch unit. The control module can be connected to the first switch unit, the second switch unit, and the third switch unit, separately. The control module can control the switching on or off of the first switch unit, the second switch unit, and the third switch unit, so as to select different switch units in the switch module to bear switching-on loss or switching loss. On the basis of the present application, different switch units can be flexibly selected to bear the switching-on loss or switching loss, so that the loss of the neutral point clamped inverter under all operating conditions is reduced, efficiency is high, and applicability is high.

Inventors:
WANG XUDONG (CN)
WANG ZHAOHUI (CN)
SHI LEI (CN)
Application Number:
PCT/CN2021/094124
Publication Date:
June 02, 2022
Filing Date:
May 17, 2021
Export Citation:
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Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02M7/487
Foreign References:
CN106655852A2017-05-10
CN109980970A2019-07-05
CN111835221A2020-10-27
CN111030440A2020-04-17
CN104333250A2015-02-04
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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