Title:
インバータ装置の負荷短絡検出方法
Document Type and Number:
Japanese Patent JP3601255
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To detect short circuit of the load circuit of an inverter at the time of start-up. SOLUTION: An interval for turning the semiconductor switch 11 in the upper arm and the semiconductor switches 15, 16 in the lower arm, an interval for turning the semiconductor switch 12 in the upper arm and the semiconductor switches 14, 16 in the lower arm, or an interval for turning the semiconductor switch 13 in the upper arm and the semiconductor switches 14, 15 in the lower arm is decreased as the voltage of a DC power supply is increased. According to the arrangement, short circuit of the load path can be detected surely regardless of fluctuation in the voltage of the DC power supply.
Inventors:
Osamu Shiokawa
Application Number:
JP14741497A
Publication Date:
December 15, 2004
Filing Date:
June 05, 1997
Export Citation:
Assignee:
Fuji Electric Equipment Control Co., Ltd.
International Classes:
G01R31/02; H02H11/00; H02M7/48; H02M7/5387; (IPC1-7): H02M7/48; G01R31/02; H02M7/5387
Domestic Patent References:
| JP63099778A | ||||
| JP8308244A | ||||
| JP7143759A | ||||
| JP4255497A |
Attorney, Agent or Firm:
Masaharu Shinobe