Title:
POWER CONVERTER
Document Type and Number:
Japanese Patent JP3314256
Kind Code:
B2
Abstract:
PURPOSE: To reduce the size of cooler while sharing the unit by arranging one phase of a converter for converting AC power into DC power and one phase of an inverter for converting DC power into AC power on a same cooler.
CONSTITUTION: Main circuit units 9a-9c, 10 are constituted such that four phases are arranged on one cooler and three phases 7a-7c among four phases of a PWM converter are combined with PWM inverters 7e-7g. The one remaining phase 7d of the PWM converter is combined with an overvoltage protective circuit 8 to obtain a main circuit unit 10. Consequently, the power converter can be shared and the capacity of a cooler required for the power converter of a PWM converter/inverter electric vehicle can be reduced.
Inventors:
Takeshi Ando
Satoshi Horie
Hideharu Saito
High Toshihiko Hisa
Toshio Takasaki
Satoshi Horie
Hideharu Saito
High Toshihiko Hisa
Toshio Takasaki
Application Number:
JP16769694A
Publication Date:
August 12, 2002
Filing Date:
July 20, 1994
Export Citation:
Assignee:
株式会社日立製作所
日立水戸エンジニアリング株式会社
日立水戸エンジニアリング株式会社
International Classes:
H02M7/219; B60L9/24; B60L15/00; H02M7/00; H02M7/04; H02M7/12; H02M7/48; (IPC1-7): H02M7/04; B60L15/00; H02M7/219; H02M7/48
Domestic Patent References:
| JP6165524A |
Other References:
【文献】国際公開92/22957(WO,A1)
Attorney, Agent or Firm:
Shigeru Sasaoka (1 person outside)