The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2026
Filed:
Jun. 29, 2022
Goldwind Science & Technology Co., Ltd., Urumqi, CN;
Jinpeng Wang, Beijing, CN;
GOLDWIND SCIENCE & TECHNOLOGY CO., LTD., Urumqi, CN;
Abstract
A zero-sequence current suppression method and device, a converter and a wind turbine are provided. The converter comprises N converter units connected in parallel, N being a positive integer greater than or equal to 2. The zero-sequence current suppression method comprises: obtaining a zero-sequence current in each of N−1 converter units among the N converter units; synchronizing pulse width modulation PWM control signals of all rectifiers in the N converter units and synchronizing PWM control signals of all inverters in the N converter units, to suppress high-frequency components of zero-sequence currents in the N converter units; and performing PI regulation by using the zero-sequence currents of the N−1 converter units and zero-sequence current reference values of the N−1 converter units, to suppress low frequency components of the zero-sequence currents in the N converter units.
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