Brushless motor driving apparatus and brushless motor driving method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9035588
APP PUB NO 20130069575A1
SERIAL NO

13614380

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Abstract

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A brushless motor driving apparatus that rotates and drives a brushless motor, which has a plurality of coils, by switching energization modes corresponding to phases of the brushless motor, sequentially switches the energization modes based on a non-energized phase voltage and a voltage threshold. Also, the brushless motor driving apparatus regulates an upper threshold for energization amount based on the voltage threshold and a change in the non-energized phase voltage at timing of switching the energization mode.

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Patent Owner(s)

  • FUJITSU MICROELECTRONICS LIMITED;HITACHI AUTOMOTIVE SYSTEMS, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hano, Masaki Isesaki, JP 22 99
Okamoto, Naoki Isesaki, JP 190 2190

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