Brushless motor control apparatus having overheat protecting...

Details Brushless motor control apparatus having overheat protecting... Brushless motor control apparatus having overheat protecting...

2006-09-05

2006-09-05

Duda, Rina (Department: 2837)

Electricity: motive power systems

Positional servo systems

With protective or reliability increasing features

C318S563000, C318S254100, C318S139000, C318S434000, C318S807000, C361S031000

Reexamination Certificate

active

07102314

ABSTRACT:
A brushless motor control apparatus detects a phase current flowing in a brushless motor, converts the phase current to a vector current including a d-axis current of a magnetic flux direction component and a q-axis current of a torque direction component orthogonal to the d-axis current, calculates a vector voltage instruction value based on differences between a vector current and a vector current instruction value, calculates a phase voltage instruction value and controls rotation of the brushless motor based on the phase voltage instruction value. The apparatus further calculates electric power produced in the brushless motor and protects the brushless motor based on the magnitude of electric power.

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