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:
Feb. 28, 2023
Filed:
Sep. 13, 2019
Denryo Co., Ltd., Tokyo, JP;
Mamoru Shibasaki, Tokyo, JP;
Hirotoshi Ezawa, Tokyo, JP;
Naotsugu Ogura, Tokyo, JP;
Shin-ichi Kobayashi, Tokyo, JP;
DENRYO CO., LTD., Tokyo, JP;
Abstract
Provided is a parallel inverter device with which, among inverter devices each including a DC/AC inverter and the like, control of a parallel operation accompanied with an increase in power capacity or the like can be easily performed without using a control line for connecting between the inverter devices. A parallel inverter device () includes a switcher () in which, on an output line to which a load () is connected, two MOSFETs connected in series to the load are arranged so as to face each other so that their energization directions are opposite directions. ON/OFF of each MOSFET of the switcher () is controlled based on a polarity of an AC voltage output from a filter circuit () of the parallel inverter device () and a direction of a current flowing to the load () on the output line so that a cross current is interrupted. Further, a voltage difference or a phase difference between a load voltage and the AC voltage output from the filter circuit () is controlled so as to be reduced so that occurrence of the cross current is prevented.