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. 08, 2015
Filed:
Feb. 21, 2014
Kenichi Takagi, Nagoya, JP;
Masanori Ishigaki, Nagakute, JP;
Takaji Umeno, Nisshin, JP;
Kenichiro Nagashita, Toyota, JP;
Takahiro Hirano, Toyota, JP;
Jun Muto, Toyota, JP;
Yasuharu Terada, Toyota, JP;
Kenichi Takagi, Nagoya, JP;
Masanori Ishigaki, Nagakute, JP;
Takaji Umeno, Nisshin, JP;
Kenichiro Nagashita, Toyota, JP;
Takahiro Hirano, Toyota, JP;
Jun Muto, Toyota, JP;
Yasuharu Terada, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
An electric power conversion system includes: a primary electric power conversion circuit including primary right and left arms; a secondary electric power conversion circuit including secondary right and left arms; and a control circuit controlling transfer of electric power between the primary and secondary electric power conversion circuits by magnetically coupling a primary coil to a secondary coil. The control circuit sets an interphase difference in switching between right and left arm lower transistors in the primary electric power conversion circuit and an interphase difference in switching between right and left arm lower transistors in the secondary electric power conversion circuit on the basis of off times of the primary and secondary electric power conversion circuits such that a phase difference between terminal voltage waveforms of the primary and secondary coils is 0 and duty ratios of the terminal voltage waveforms are equal to each other.