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Patent Searching and Data


Title:
MOTOR DRIVE APPARATUS AND MOTOR DRIVE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/163729
Kind Code:
A1
Abstract:
A motor drive apparatus (50) for driving a motor (6) through reception of AC power supplied from an AC power source (3), comprises: a converter circuit (12) for converting AC power into DC power; an inverter circuit (24) for driving the motor through conversion, into AC power, of DC power supplied from the converter circuit (12); and a current detector (16) for detecting input current that is flowing to the AC side of the converter circuit (12). In the motor drive apparatus (50), a converter device (1) includes a control unit (10) for performing control on the basis of a detection value from the current detector (16) such that the input current or input power supplied to the converter circuit (12) does not exceed an upper limit value, and an inverter device (2) includes a control unit (20) for detecting bus voltage which is voltage of a DC bus (7) connecting the converter circuit (12) and the inverter circuit (24), and for restricting output power of the inverter circuit (24) when a detection value of the bus voltage reaches a preset lower limit value.

Inventors:
TAIRA SATOSHI (JP)
HAYASHI YOSHITOMO (JP)
Application Number:
PCT/JP2019/005963
Publication Date:
August 29, 2019
Filing Date:
February 19, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P27/08
Domestic Patent References:
WO2016132509A12016-08-25
WO2017006485A12017-01-12
Foreign References:
JP2017017931A2017-01-19
JP2015126620A2015-07-06
JPS6348162A1988-02-29
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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