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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.:

US 12771265 B1

PDFFull Text
Date of Patent:
Oct. 20, 2026

Filed:

Nov. 29, 2023

Multi-inverter parallel system and method for controlling grid connection of inverter

Applicant:

Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;

Inventors:

Xinyu Yu, Shanghai, CN;

Junjie Li, Shanghai, CN;

Kai Xin, Shanghai, CN;

Assignee:

Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;

Attorney:

Fish & Richardson P.C.

Primary Examiner:

Jue Zhang

Int. Cl.
CPC ...
H02M 7/5387 (2007.01); H02J 3/01 (2026.01); H02J 3/38 (2026.01); H02M 1/00 (2007.01); H02M 1/12 (2006.01); H02M 7/493 (2007.01); H02M 7/5395 (2006.01);
U.S. Cl.
CPC ...
H02M 7/53871 (2013.01); H02M 1/0067 (2021.05); H02M 1/123 (2021.05); H02M 7/493 (2013.01); H02M 7/5395 (2013.01); H02J 3/01 (2013.01); H02J 3/38 (2013.01);
Abstract

A multi-inverter parallel system are provided. The system includes a first inverter and a second inverter. The first inverter includes a first controller, a first inverter circuit, and a first relay. The second inverter includes a second controller, a second inverter circuit, and a second relay. Phases of an output end of the first inverter circuit are correspondingly connected to phases of an output end of the second inverter circuit. The first controller may control the first relay to be turned on. The second controller may control, when the second relay is turned off, a direct current bus voltage of the second inverter circuit to be the same as a direct current bus voltage of the first inverter circuit, and control a common-mode voltage injection manner of the second inverter circuit to be the same as a common-mode voltage injection manner of the first inverter circuit.

Find Patent Forward Citations

Yu, Xinyu. (2026). Multi-inverter parallel system and method for controlling grid connection of inverter (U.S. Patent No. 12771265). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12771265

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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