Title:
POWER CONVERSION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2013/161565
Kind Code:
A1
Abstract:
A control device (20) that controls an inverter unit (10) generates a voltage command on the basis of a phase detected by a first detection unit, generates a PWM signal (27a) for a first bridge circuit (Q1-Q2) on the basis of the voltage command, and generates a polarity signal (30a) for a second bridge circuit (Q3-Q4) on the basis of a phase detected by a second detection unit. Further, a command value correction unit (26) corrects the generated voltage command to 0V in the course of a first period (26b) that continues from a point of time prior to a zero-cross phase (x1) detected by the first detection unit, and a gate-off control unit (30) sets the polarity signal (30a) to an off state in the course of a second period (30b) that continues from a zero-cross phase (x2) detected by the second detection unit, thereby inhibiting spike voltages from being generated upon changes in the polarity of the output voltage of the inverter unit (10).
Inventors:
KAWANO HIDEKI (JP)
Application Number:
PCT/JP2013/060810
Publication Date:
October 31, 2013
Filing Date:
April 10, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/48
Foreign References:
| JP2009106017A | 2009-05-14 | |||
| JP2010081788A | 2010-04-08 | |||
| JPH11234903A | 1999-08-27 | |||
| JP2001286078A | 2001-10-12 | |||
| JP2008092786A | 2008-04-17 |
Attorney, Agent or Firm:
MURAKAMI Keigo et al. (JP)
Keigo Murakami (JP)
Keigo Murakami (JP)
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