Title:
MOTOR DRIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/006820
Kind Code:
A1
Abstract:
A motor driving device comprises: an inverter circuit having switching elements; and a control device for controlling the switching of the switching elements. The control device sets a carrier frequency to f1 when a two-phase modulation scheme is selected, and sets the carrier frequency to f0, which is is half the carrier frequency f1, when a three-phase modulation scheme is selected. Thereby, the frequency of the secondary component of a current flowing in a filter circuit when selecting the three-phase modulation scheme may be deviated from the resonance frequency of the filter circuit. Accordingly, the current ripple generated in the filter circuit may be minimized even when selectively switching the modulation scheme for the PWM among a plurality of modulation schemes.
Inventors:
SAKAI KOJI (JP)
Application Number:
PCT/JP2013/003552
Publication Date:
January 09, 2014
Filing Date:
June 06, 2013
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02P27/02; H02M7/48; H02P27/06; H02P6/06; H02P6/08; H02P6/28; H02P21/05; H02P21/22; H02P23/04; H02P27/08
Foreign References:
| JP2009189203A | 2009-08-20 | |||
| JP2008141856A | 2008-06-19 |
Attorney, Agent or Firm:
KIN, Junhi (Takisada Bldg. 2-13-19, Nishiki, Naka-ku, Nagoya-cit, Aichi 03, JP)
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