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:
Aug. 03, 2021
Filed:
Mar. 03, 2020
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Shunsuke Tobayashi, Tokyo, JP;
Toshiaki Oka, Tokyo, JP;
Abstract
A power conversion apparatus comprises, a converter that receives a three-phase AC power supply 1 and outputs a DC voltage, an inverter that is connected to the output of the converter and drives the AC motor via the output switch, a power switch for directly driving an AC motor from the AC power supply, a current detector for detecting the output current of the inverter, a voltage detector and a current detector for detecting the voltage and current of the power supply system on the input side of the converter, respectively, and a control unit for controlling the three-phase output voltage of the inverter based on the voltage command of three phases. The control unit includes a vector control unit that performs vector control of the AC motor and a synchronous incorporation controller. The synchronous incorporation controller switches to operate the inverter as a reactive power controller for the power supply system after closing the power switch to synchronize the AC motor with the AC power supply.