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. 04, 2023
Filed:
Feb. 17, 2020
Altenergy Power System Inc., Zhejiang, CN;
Jian Wu, Zhejiang, CN;
Biaojie Qi, Zhejiang, CN;
Yongchun Yang, Zhejiang, CN;
Yuhao Luo, Zhejiang, CN;
ALTENERGY POWER SYSTEM INC., Zhejiang, CN;
Abstract
A three-phase grid-connected inverter, and a method and a device for controlling the three-phase grid-connected inverter are provided. The method is applied to a three-phase three-leg grid-connected inverter. A structure of the three-phase three-leg grid-connected inverter is improved, so that a filter capacitor (C, C, and C) is connected to a negative electrode of a direct current input bus to form a harmonic bypass circuit. Inverter devices connected in parallel in the system operate stably without increase of inductance of an inductor (L, L, L). In addition, the three-phase three-leg grid-connected inverter according to the present disclosure operates in a discontinuous mode of inductor current (i, i, and i). That is, in the process that a power switch transistor (Q, Q, Q, Q, Qand Q) on bridge legs is turned on, the inductor current (i, i, and i) drops to zero.