Title:
電動機動力システム及び電気車
Document Type and Number:
Japanese Patent JP6715160
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce inductive interference caused from a grounding cable branched from/connected to a main conversion device.SOLUTION: An electric motor power system is provided that comprises: a first grounding conductor connected to earth electric potential of a main conversion device and connected to a grounding brush of a first wheel being a driving object of a main electric motor; a grounding conductor branched from the first grounding conductor, that is, a second grounding conductor connected to the grounding brush of a second wheel being the driving object of the main electric motor; and a first annular core into which the first grounding conductor and the second grounding conductor are inserted in directions in which higher harmonic currents flow in directions inverse to each other. In the electric motor power system, inductive interference caused from the grounding conductor can be reduced since the higher harmonic currents flowing to a plurality of grounding conductors branched from/connected to the main conversion device are offset.SELECTED DRAWING: Figure 4
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Inventors:
Yasuhiro Nagaura
Takashi Kaneko
Hiroyuki Ozawa
Kyohei Kozono
Takashi Kaneko
Hiroyuki Ozawa
Kyohei Kozono
Application Number:
JP2016204435A
Publication Date:
July 01, 2020
Filing Date:
October 18, 2016
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B60L9/18; B61C3/00
Domestic Patent References:
| JP2011166968A | ||||
| JP2078973A | ||||
| JP2006333673A | ||||
| JP2007068309A | ||||
| JP2008054396A | ||||
| JP2009269579A | ||||
| JP2012060792A |
Foreign References:
| US20030197989 |
Attorney, Agent or Firm:
Patent Business Corporation Sunnext International Patent Office