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Patent Searching and Data


Title:
INVERTER CURRENT EQUALIZING METHOD AND APPARATUS, INVERTER SYSTEM, AND WIRELESS CHARGING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/080493
Kind Code:
A1
Abstract:
Disclosed in the present application are an inverter current equalizing method and apparatus, an inverter system, and a wireless charging system, for use in implementing multi-inverter current equalizing. The method comprises: separately comparing reactive current of a first inverter and of a second inverter with a reactive current reference value, to respectively obtain reactive current differences of the first inverter and of the second inverter; comparing active current of the first inverter and of the second inverter with an active current reference value, to respectively obtain active current differences of the first inverter and of the second inverter; and respectively adjusting input voltage amplitudes of the first inverter and of the second inverter according to the reactive current differences of the first inverter and of the second inverter, and respectively adjusting phase differences between carrier signals generated by the first inverter and by the second inverter and a carrier synchronization signal according to the active current differences of the first inverter and of the second inverter, so that the output current of the two inverters is equalized.

Inventors:
MAO YUNHE (CN)
Application Number:
PCT/CN2018/088352
Publication Date:
May 02, 2019
Filing Date:
May 25, 2018
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02M7/48
Foreign References:
CN105490571A2016-04-13
CN1581628A2005-02-16
CN201711000947A2017-10-24
Other References:
XIAO, LAN ET AL.: "Analysis and Realization of DC-AC Inverter Parallel System Based on Active and Reactive Circulating-Current Control", TRANSACTION OF CHINE ELECTROTECHNICAL SOCIETY, vol. 20, no. 10, 26 October 2005 (2005-10-26), pages 8 - 9, XP055690567, ISSN: 1000-6753
See also references of EP 3691104A4
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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