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:
Dec. 05, 2017
Filed:
Sep. 15, 2014
Hunan University, Changsha, CN;
Changsha Boli Electric Corporation, Changsha, CN;
An Luo, Changsha, CN;
Yandong Chen, Changsha, CN;
Mingyue Wang, Changsha, CN;
Qingchang Zhong, Sheffield, GB;
Leming Zhou, Changsha, CN;
Yuan Huang, Changsha, CN;
Zhiyong Chen, Changsha, CN;
Xiaoping Zhou, Changsha, CN;
Huimin Kuang, Changsha, CN;
Mingshen Li, Changsha, CN;
Hunan University, Changsha, CN;
Changsha Boli Electric Corporation, Changsha, CN;
Abstract
A steady state control method for a three-phase double-mode inverter. Off-grid steady state control is composed of outer loop power droop control, voltage feed-forward quasi-resonant control, and inner current loop dead-beat control. Therefore, the response speed of the inverter is raised, and the influence caused by the load fluctuation of a micro-grid is inhibited. Based on the off-grid steady state control, grid-connected steady state control introduces phase lead control to the power droop control. Therefore, the output voltage of the inverter is always slightly ahead of the power grid voltage, which avoids the energy pour backward phenomenon of the inverter due to a phase error, and realizes stable and reliable running in the grid-connected mode.