Title:
MOTOR CONTROLLER AND MOTOR CONTROL METHOD
Document Type and Number:
Japanese Patent JP2017184448
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To obtain a compact motor controller capable of preventing destruction of an inverter circuit or a motor, at a low cost, by suppressing increase in the phase current when three-phase short circuit processing was executed, and suppressing rise of capacitor terminal voltage and rise of phase current flowing to each phase of the motor, even when the inverter circuit is disconnected from a DC power supply.SOLUTION: A switching control section performing ON/OFF control of the switching element in a power conversion circuit has a three-phase short circuit processing command generation unit for starting three-phase short circuit processing at the timing when the maximum value of phase current absolute value of an AC motor after three-phase short circuit processing becomes minimum, when executing three-phase short circuit processing for turning all upper stage side switching elements or all lower stage side switching elements.SELECTED DRAWING: Figure 2
Inventors:
SHINOHARA RYO
Application Number:
JP2016068155A
Publication Date:
October 05, 2017
Filing Date:
March 30, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H02P3/14; B60L3/00; H02M7/48
Domestic Patent References:
| JPH10271884A | 1998-10-09 | |||
| JP2015198461A | 2015-11-09 | |||
| JP2012130111A | 2012-07-05 |
Foreign References:
| WO2012070106A1 | 2012-05-31 |
Attorney, Agent or Firm:
Michiharu Soga
Kajinami order
Kazuhiro Oyaku
Shunichi Ueda
Junichiro Yoshida
Satoshi Iino
Yoshiyuki Tamura
Kajinami order
Kazuhiro Oyaku
Shunichi Ueda
Junichiro Yoshida
Satoshi Iino
Yoshiyuki Tamura