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:
Dec. 03, 2002
Filed:
Sep. 06, 2001
Kazuhisa Mori, Hitachi, JP;
Asako Koyanagi, Hitachi, JP;
Satoshi Fukuda, Hitachinaka, JP;
Toshisuke Mine, Mito, JP;
Takao Kishikawa, Hitachinaka, JP;
Tomoharu Sakoda, Hitachinaka, JP;
Other;
Abstract
A semiconductor electric power conversion device includes a converter unit and an inverter unit, each having a group of parallel capacitors and multiple switching elements. Subdivided positive conductive connections associated with the converter unit and divided positive conductive connections associated with the inverter unit are formed at a positive side conductor connected to capacitors; while divided negative conductive connections associated with the converter unit and divided negative-polarity conductive connections associated with the inverter unit are formed at a negative polarity side conductor, connected to capacitors. The positive and negative polarity conductors have a multilayer structure with a dielectric plate interposed therebetween. Converter positive and negative polarity conductors are formed into a multilayer structure with the dielectric plate sandwiched between them, and inverter positive and negative polarity conductors are formed into a multilayer structure with the dielectric plate sandwiched therebetween.