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:
Jul. 29, 2025
Filed:
Oct. 07, 2021
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Infrastructure Systems & Solutions Corporation, Kawasaki, JP;
Yuusuke Kouno, Tokyo, JP;
Toshiyuki Baba, Kawaguchi Saitama, JP;
Yasuomi Maki, Tokyo, JP;
Yuichiro Nozaki, Tokyo, JP;
Tsunehito Fujita, Tokyo, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
In an electric power conversion device according to an embodiment, a chopper converts electric power from a power supply into direct-current power. An inverter converts the direct-current power into alternating-current power. Pairs of resonant capacitors are connected to a direct-current input section of the inverter. Each of the pairs is in series. Primary windings of high-frequency transformers are connected to the inverter and respective midpoints of the pairs of resonant capacitors. The high-frequency transformers convert the alternating-current power of the inverter. Rectifiers convert alternating-current power supplied from secondary windings of the high-frequency transformers into direct-current power. One or more voltage detectors detect output voltage of one or more of the rectifiers. A control device controls the chopper on the basis of output of the voltage detectors such that an output voltage of the direct-current power comes to a predetermined voltage value.