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:
Nov. 17, 2009
Filed:
Mar. 31, 2008
Takahiro Urakabe, Tokyo, JP;
Matahiko Ikeda, Tokyo, JP;
Masaru Kobayashi, Tokyo, JP;
Akihiko Iwata, Tokyo, JP;
Tatsuya Okuda, Tokyo, JP;
Hirotoshi Maekawa, Tokyo, JP;
Toshiyuki Kikunaga, Tokyo, JP;
Takahiro Urakabe, Tokyo, JP;
Matahiko Ikeda, Tokyo, JP;
Masaru Kobayashi, Tokyo, JP;
Akihiko Iwata, Tokyo, JP;
Tatsuya Okuda, Tokyo, JP;
Hirotoshi Maekawa, Tokyo, JP;
Toshiyuki Kikunaga, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A DC/DC power conversion device includes n-stage circuits comprised of an inverter circuit for driving which is connected between positive terminals and negative terminals of smoothing capacitors, and a rectifier circuit which is connected between positive terminals and negative terminals of smoothing capacitors; a first circuit corresponding to at least one among the n-stage circuits and configured by connecting in parallel cell circuits of m, second circuits corresponding to a plurality of remaining circuits of (n−1) among the n-stage circuits; capacitors for energy transfer connected between middle points of the cell circuits and middle points of the second circuits; and column circuits of m comprised of the cell circuits, the second circuits and the capacitors for energy transfer, wherein the middle points are contact points of high voltage sided elements and low voltage sided elements of the cell circuits and the second circuits; and driving signals for driving the respective column circuits have the same driving cycle and are out of phase with each other.