Title:
DRIVE CONTROL DEVICE OF ALTERNATING-CURRENT MOTOR
Document Type and Number:
WIPO Patent Application WO/2011/080823
Kind Code:
A1
Abstract:
The disclosed drive control device of an alternating-current motor is provided with: an inverter (INV) that has a plurality of switching elements that are subjected to on/off control, and that converts direct-current voltage to alternating-current voltage of an arbitrary frequency, driving the alternating-current motor (6); a motor open contactor (MMK) connected between the aforementioned inverter (INV) and the aforementioned alternating-current motor (6); an opening/closing-action pre-detection unit (55), that detects the opening/closing action of the motor open contactor (MMK) prior to contact/separation of the main contact, and outputs an opening/closing-action pre-detection signal; and a control unit (10A) that performs on/off control of the aforementioned plurality of switching elements and opening/closing control of the motor open contactor (MMK), and that also has an inverter control unit (70) that controls the aforementioned inverter (INV) on the basis of the aforementioned opening/closing-action pre-detection signal.
Inventors:
TSUKIMA MITSURU (JP)
KITANAKA HIDETOSHI (JP)
KITANAKA HIDETOSHI (JP)
Application Number:
PCT/JP2009/071758
Publication Date:
July 07, 2011
Filing Date:
December 28, 2009
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
TSUKIMA MITSURU (JP)
KITANAKA HIDETOSHI (JP)
TSUKIMA MITSURU (JP)
KITANAKA HIDETOSHI (JP)
International Classes:
B60L3/00; H02P27/06; B60L3/04; B60L9/18; H02P21/05; H02P23/04; H02P27/08
Domestic Patent References:
| WO2009125683A1 | 2009-10-15 |
Foreign References:
| JP4316005B1 | 2009-08-19 | |||
| JPH0946813A | 1997-02-14 | |||
| JPH08182105A | 1996-07-12 | |||
| JP2008079496A | 2008-04-03 |
Other References:
See also references of EP 2521255A4
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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