Title:
POWER CONVERTER
Document Type and Number:
Japanese Patent JP2002271901
Kind Code:
A
Abstract:
To ensure redundancy of the whole system not only for failure in an inverter, but also for failure in a motor fan.
In the case of the failure in the motor fan 16b which applies forced draft to a CVCF inverter 9', a circuit element of an inverter converting part cannot be cooled, so that the inverter which performs forced draft with the motor fan 16b is required to be disconnected. The CVCF inverter and a plurality of groups of VVVF inverters 4a' are disconnected from the system and the VVVF inverter 4b' is switched to the CVCF inverter so as to be driven. At that time, the VVVF inverters 4b' to be switched is arranged so as to be forcibly blown from another motor fan 16a, thereby ensuring redundancy for failure in the motor fan 16b.
Inventors:
IDE YUJI
KANDA MASAHIKO
YAMAGUCHI YOSHIHIRO
KANDA MASAHIKO
YAMAGUCHI YOSHIHIRO
Application Number:
JP2001070949A
Publication Date:
September 20, 2002
Filing Date:
March 13, 2001
Export Citation:
Assignee:
TOSHIBA TRANSP ENG INC
TOSHIBA CORP
TOSHIBA CORP
International Classes:
B60L1/00; B60L9/18; H02M7/48; (IPC1-7): B60L1/00; B60L9/18; H02M7/48
Domestic Patent References:
| JPH08242502A | 1996-09-17 | |||
| JPH099401A | 1997-01-10 | |||
| JPS5984401A | 1984-05-16 | |||
| JP2001258263A | 2001-09-21 | |||
| JPH06284516A | 1994-10-07 |
Attorney, Agent or Firm:
Hidekazu Miyoshi (7 outside)
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