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:
Sep. 30, 2025
Filed:
Nov. 17, 2021
Sanden Corporation, Isesaki, JP;
Kyushu Institute of Technology, Kitakyushu, JP;
SANDEN CORPORATION, Isesaki, JP;
KYUSHU INSTITUTE OF TECHNOLOGY, Kitakyushu, JP;
Abstract
A power conversion device is provided which is capable of balancing impedance relatively easily and suppressing noise caused by a common mode current when a three-phase AC output is applied to drive a motor. When the inductance of a positive electrode-side pathis Zv, the inductance of a negative electrode-side pathis Zg, the capacitance between a positive electrode-side parasitic capacitance generation point P and a housingis Zt, and the capacitance between a negative electrode-side parasitic capacitance generation point N and the housingis Zb, the capacitance Zt and the capacitance Zb are set based on an equilibrium condition of a bridge circuit constituted by the inductance Zv, the inductance Zg, the capacitance Zt, and the capacitance Zb, An intermediate added impedance Zmis connected to output pathsU toW between an intermediate path connecting low potential-side terminals of upper arm switching elementstoand high potential-side terminals of lower arm switching elementstoand a motor M.