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:
Mar. 28, 2017
Filed:
Mar. 31, 2016
Boe Technology Group Co., Ltd., Beijing, CN;
Beijing Boe Energy Technology Co., Ltd., Beijing, CN;
BOE TECHNOLOGY GROUP CO., LTD., Beijing, CN;
BEIJING BOE ENERGY TECHNOLOGY CO., LTD., Beijing, CN;
Abstract
The present disclosure provides a single-phase PLL controlling method and a single-phase PLL controlling device. The device includes a first FIR filter, a second FIR filter and a Park converter. The first FIR filter and the second FIR filter are configured to perform FIR filtration on a collected power grid voltage signal so as to acquire filtered signals, and output the filtered signals to the Park converter. A filtered signal Vα acquired by the first FIR filter and a filtered signal Vβ acquired by the second FIR filter form a set of virtual two-phase signals in an αβ coordinate system. The Park converter is configured to perform Park conversion on the filtered signal Vα and the filtered signal Vβ, so as to acquire a set of two-phase signals Vd and Vq in a dq coordinate system.