A brushless motor control apparatus (3, 130) detects a phase current flowing in a brushless motor (1, 101), 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 (1, 101) based on the phase voltage instruction value. The apparatus (3, 130) further calculates electric power produced in the brushless motor (1, 101), and protects the brushless motor (1, 101) based on the magnitudes of electric power.
Brushless motor control apparatus having overheat protecting function
Regelvorrichtung für bürstenlosen Motor mit Überhitzungsschutzfunktion
Appareil de commande pour un moteur sans balai avec fonction de protection de surchauffe
2018-05-30
Patent
Electronic Resource
English
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