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. 29, 2025
Filed:
Feb. 06, 2024
Huazhong University of Science and Technology, Hubei, CN;
Donghai Zhu, Hubei, CN;
Yini Zhou, Hubei, CN;
Jiabing Hu, Hubei, CN;
Xudong Zou, Hubei, CN;
Yong Kang, Hubei, CN;
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hubei, CN;
Abstract
The disclosure discloses a phase-locked loop optimization method and device for ultra-fast frequency support for power electronic converters, and belongs to the technical field of new energy power generation control. The disclosure adds a phase step link to the traditional phase-locked loop structure. When it is detected that the system frequency index exceeds the limit, a phase angle difference is instantly added to the phase-locked loop output angle, this enables the power electronic converter to quickly output power after the frequency drops, effectively improving the system frequency change rate and the frequency nadir. At the same time, the original phase-locked loop control structure is retained, which does not affect the design of the original phase-locked loop controller parameters and does not sacrifice the original dynamic performance of the phase-locked loop.