Title:
POWER CONVERSION DEVICE AND DRIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/047698
Kind Code:
A1
Abstract:
This power conversion device is characterized by comprising: a power conversion unit that converts and outputs voltage bidirectionally from a DC power source to an electric motor and from the electric motor to the DC power source; a first voltage detecting unit that detects inter-terminal voltage at the DC power source side of the power conversion unit; a second voltage detecting unit that detects inter-terminal voltage at the electric motor side of the power conversion unit; and a control unit that controls an operation of the power conversion unit, wherein the control unit is provided with a first calculating unit that calculates a main duty from a target voltage and the inter-terminal voltage at the electric motor side, and a second calculating unit that calculates a sub duty from the main duty, the inter-terminal voltage at the electric motor side, and the inter-terminal voltage at the DC power source side detected by the second voltage detecting unit, and a duty amount for operating the power conversion unit is calculated on the basis of the main duty and the sub duty. The power conversion device can improve the follow-up property of control even when an output voltage varies due to an influence of dead time.
Inventors:
UENAKA MAI (JP)
IKEDA MATAHIKO (JP)
KONDO RYOTA (JP)
IKEDA MATAHIKO (JP)
KONDO RYOTA (JP)
Application Number:
PCT/JP2016/077273
Publication Date:
March 23, 2017
Filing Date:
September 15, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M3/155
Domestic Patent References:
| WO2010137128A1 | 2010-12-02 |
Foreign References:
| JP2009201318A | 2009-09-03 | |||
| JP2011167011A | 2011-08-25 | |||
| JP2007097392A | 2007-04-12 | |||
| JP2010268596A | 2010-11-25 |
Attorney, Agent or Firm:
INABA, Tadahiko et al. (JP)
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