Title:
FAULT RIDE-THROUGH METHOD AND CONVERTER
Document Type and Number:
WIPO Patent Application WO/2024/066511
Kind Code:
A1
Abstract:
The present application provides a fault ride-through method applied to a converter. The converter comprises a conversion circuit and a filter inductor; an input end of the conversion circuit is configured to be connected to a direct-current source; a first end of the filter inductor is configured to be connected to an output end of the conversion circuit; and a second end of the filter inductor is configured to be connected to a load. The fault ride-through method is executed by the converter. The fault ride-through method comprises: measuring an inner potential vector of a first end and a terminal voltage vector of a second end of a filter inductor; and when the amplitude of the terminal voltage vector of the second end of the filter inductor decreases to be less than or equal to a preset terminal voltage extremum, reducing the inner potential vector of the first end of the filter inductor, so as to reduce the amplitude of a filter inductor current vector on the filter inductor to be less than or equal to a preset current amplitude limit value, wherein the inner potential vector, the terminal voltage vector, and the filter inductor current vector form a trigonometric function relationship. The present application also provides a converter.
Inventors:
ZHANG MEIQING (CN)
DONG MINGXUAN (CN)
ZHOU JIUYANG (CN)
XIN KAI (CN)
DONG MINGXUAN (CN)
ZHOU JIUYANG (CN)
XIN KAI (CN)
Application Number:
PCT/CN2023/101717
Publication Date:
April 04, 2024
Filing Date:
June 21, 2023
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02M1/32
Foreign References:
| CN115622379A | 2023-01-17 | |||
| CN101860038A | 2010-10-13 | |||
| CN110048455A | 2019-07-23 | |||
| US20180115255A1 | 2018-04-26 |
Other References:
王硕 (WANG, SHUO): "双馈风机虚拟同步并网控制基础理论与关键技术研究 (Basic Theory and Key Technology of Virtual Synchronous Controlled DFIG-basd Wind Turbine)", CHINA DOCTORAL DISSERTATIONS FULL-TEXT DATABASE (ENGINEERING SCIENCE AND TECHNOLOGY II), ISSUE 10, 2018, 15 October 2018 (2018-10-15), pages 133 - 134
Attorney, Agent or Firm:
SHENZHEN SCIENBIZIP INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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