SIMULATED MOTOR AND MOTOR SIMULATING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a simulated motor which can be used for both a voltage control type inverter and a current control type inverter.

SOLUTION: A rotor angle θ of the simulated motor is obtained from a rotary speed command ω to be inputted into a motor simulation operating control unit 11, and currents id, iq on d, q axes are obtained on the basis of output currents iu, iw of an inverter 1 to be tested and the angle θ. Further, voltages Vd, Vq on the d, q axes are obtained on the basis of output voltages Vu, Vw of the inverter 1 and the angle θ. Still further, a current to be applied to the simulated motor is obtained as current commands id*, iq*on the basis of the voltages Vd, Vq and a voltage/current equation of the simulated motor, the current commands id*, iq*are compared to the current id, iq respectively, voltage commands Vdo*, Vqo*on the d, q axes are generated, and control signals Vou*, Vov*, Vow*of the output voltages of an inverter 2 for a simulated load are generated on the basis of the voltage commands Vdo*, Vqo*.

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