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:
Oct. 07, 2025
Filed:
Nov. 07, 2022
Guangdong Zhicheng Champion Group Co., Ltd., Guangdong, CN;
Yandong Chen, Guangdong, CN;
Jian Guo, Guangdong, CN;
Wenhua Wu, Guangdong, CN;
Zhiwei Xie, Guangdong, CN;
Leming Zhou, Guangdong, CN;
Xiaoping Zhou, Guangdong, CN;
Qianming Xu, Guangdong, CN;
Zhixing He, Guangdong, CN;
Guangdong Zhicheng Champion Group Co, Ltd., Guangdong, CN;
Abstract
The present invention discloses an island microgrid system and an interactive oscillation suppression method and system therefor. A source-side virtual synchronous machine and a load-side virtual synchronous machine are combined to provide virtual inertia and damping. The present invention provides a d-axis inductive current feedforward control method and a d-axis voltage feedback control method to remodel impedances of VSGs, so as to reduce impedance amplitudes of the VSGs. Therefore, low-frequency interaction between the VSG and LVSM may be suppressed. The present invention may be used to solve interactive oscillation problems of an alternating-current island microgrid composed of a plurality of source-load virtual synchronous machines.