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. 24, 2015
Filed:
Dec. 06, 2011
Takashi Suzuki, Obu, JP;
Kazutoshi Shiomi, Kariya, JP;
Atsuyuki Hiruma, Kariya, JP;
Shingo Hayakawa, Toyota, JP;
Takashi Suzuki, Obu, JP;
Kazutoshi Shiomi, Kariya, JP;
Atsuyuki Hiruma, Kariya, JP;
Shingo Hayakawa, Toyota, JP;
Denso Corporation, Kariya, JP;
Abstract
A power conversion device includes an inverter unit and a control unit. The inverter unit includes high SWs and low SWs for each phase of coils of a motor. The control unit, in a case that the on-time of the high SWs and the low SWs is shorter than a predetermined time determined based on a dead time, changes an output voltage average value such that the on-time of the high SWs or the on-time of the low SWs becomes longer than the predetermined time. The voltage use rate can be improved without disposing a special circuit, and distortion of inter-line voltages or distortion of currents can be suppressed.