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:
Apr. 07, 2020
Filed:
Jul. 24, 2015
Toshiba Mitsubishi-electric Industrial Systems Corporation, Chuo-ku, JP;
Naoya Shibata, Chuo-ku, JP;
Abstract
This uninterruptible power supply executes a counter voltage generation mode between a bypass power supply mode and a lap power supply mode. During the counter voltage generation mode, voltage feedforward control is performed for an inverter () in accordance with a detection value of a voltage detector (VD) to generate a counter voltage at one terminal of a switch (S), the counter voltage being at a level corresponding to a voltage at an output terminal (T). Therefore, without providing an extra voltage detector for generation of counter voltage, an inrush current can be prevented from flowing from a bypass AC power source () to an AC filter (F) through the switch (S) when the switch (S) is turned on.