Title:
INVERTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/097804
Kind Code:
A1
Abstract:
An inverter device comprises: a three-phase inverter wherein each phase includes a switching element near a high potential and a switching element near a low potential; a control unit capable of two-phase modulation control for turning the switching elements on and off; a power factor computation unit for computing the power factor of a load; and a determination unit for determining whether or not the power factor computed by the power factor computation unit is lower than a preset threshold. When the computed power factor is equal to or greater than the threshold, the control unit executes a phase shift to shift the midpoint during an on period or an off period for two phases other than a stop phase in the two-phase modulation control by 180 degrees, and when the computed power factor is lower than the threshold, the control unit outputs on and off control commands to the switching elements to execute two-phase modulation control without executing the phase shift.
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Inventors:
MATSUMOTO NAOTAKA (JP)
Application Number:
PCT/JP2013/081248
Publication Date:
June 26, 2014
Filing Date:
November 20, 2013
Export Citation:
Assignee:
TOYOTA JIDOSHOKKI KK (JP)
International Classes:
H02M7/48; H02P27/08; H02M1/00
Foreign References:
| JP2006197707A | 2006-07-27 | |||
| JP2005051838A | 2005-02-24 | |||
| JP2003033042A | 2003-01-31 | |||
| JP2005229716A | 2005-08-25 | |||
| JPH0746855A | 1995-02-14 | |||
| JP2003033042A | 2003-01-31 |
Other References:
See also references of EP 2937984A4
Attorney, Agent or Firm:
ONDA, Makoto et al. (JP)
Makoto Onda (JP)
Makoto Onda (JP)
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