Motor drive apparatus and motor drive method

Details Motor drive apparatus and motor drive method Motor drive apparatus and motor drive method

2008-03-19

2010-12-28

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Braking

Dynamic braking

C318S434000, C318S448000

Reexamination Certificate

active

07859205

ABSTRACT:
To reduce noise by limiting a current peak value to a predetermined value or less and by smoothing the waveforms of drive currents during the current limitation, switching control means (30) according to the present invention turns ON all of one-side drive transistors selected from the high-side drive transistors (21, 22and23) and the low-side drive transistors (25, 26and27) of power supply means (20) for a predetermined period, and turns OFF all of the other-side drive transistors for a predetermined period in response to a current control signal for the current peak value to a predetermined value or less.

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