Motor drive apparatus

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United States of America Patent

PATENT NO 9450523
APP PUB NO 20140340012A1
SERIAL NO

14344528

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Abstract

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To suppress a ripple contained in current flowing into a DC power supply during one-pulse control in a motor drive apparatus receiving electric power from the DC power supply. A motor drive apparatus 1 includes an inverter control device (10) provided with a one-pulse control mode in which, during one electrical angle cycle, a positive rectangular pulse voltage and a negative rectangular pulse voltage are applied, as gate drive signals, to a switching element corresponding to each phase. When performing the one-pulse control mode, the inverter control device (10) gradually increases or reduces a duty in a predetermined phase angle width at rising and falling edges of the rectangular wave voltage.

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Patent Owner(s)

Patent OwnerAddress
MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS LTD2-3 MARUNOUCHI 3-CHOME CHIYODA-KU TOKYO 1008332 ?1008332

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aiba, Kenichi Tokyo, JP 7 24
Takashige, Takayuki Tokyo, JP 41 345
Watanabe, Kyohei Tokyo, JP 15 14

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