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. 13, 2001
Filed:
Jan. 21, 2000
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An inverter having a large-capacity self-arc-extinguishing semiconductor element. Recovery capacitors recover energy stored in groups of elements for suppressing the rate of change in current, and are provided within a two-level or three-level inverter bridge. The thus-recovered energy is fed back to a d.c. voltage circuit by an energy regenerative circuit. The energy regenerative circuit controls the charging voltage of the recovery capacitors in proportion to the magnitude of a load current. In a case where the inverter includes inverter bridges connected to a single d.c. voltage circuit, the inverter bridges are divided into groups. A different energy regenerative circuit is connected to the inverter bridge on a per-group basis, and each of the energy regenerative circuits feeds power back to the d.c. voltage circuit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile