Title:
MOTOR CONTROL APPARATUS
Document Type and Number:
Japanese Patent JP2012228010
Kind Code:
A
Abstract:
To solve the problem when charging a bootstrap circuit of a motor control apparatus in which: it takes more charging time if trying to suppress circuit loss; and the circuit loss increases or a power supply requires more capacity if trying to shorten the charging time.
When charging a bootstrap circuit 106, each phase is gradually charged at a timing lagged by predetermined time and a motor 101 is used as a restriction resistor during charging of a first phase to charge other phases, so that inrush current can be prevented. Therefore, it is possible to downsize a circuit, and decrease charging time while suppressing circuit loss.
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Inventors:
FUKUDA MITSUHIRO
KODA ATSUSHI
TOKUNAGA SHIGEOMI
KODA ATSUSHI
TOKUNAGA SHIGEOMI
Application Number:
JP2011091666A
Publication Date:
November 15, 2012
Filing Date:
April 18, 2011
Export Citation:
Assignee:
PANASONIC CORP
International Classes:
H02P1/28; H02P6/06; H02P6/08
Domestic Patent References:
| JPH11313496A | 1999-11-09 | |||
| JP2001275366A | 2001-10-05 | |||
| JP2009136129A | 2009-06-18 |
Attorney, Agent or Firm:
Hiroki Naito
Daisuke Nagano
Kentaro Fujii
Daisuke Nagano
Kentaro Fujii