| 摘要 |
PURPOSE: A system and method for controlling the output of an inverter capable of compensating a control angle signal are provided to implement a stable voltage value by minimizing the distortion of a PWM output waveform. CONSTITUTION: A current flows through a motor(195). A current detector(170) detects a three phase output current from the current flowing through the motor. A phase conversion unit(180) converts the detected three phase output current to a two phase quiescent d-axis and q-axis current. A coordinate conversion unit(190) converts the detected quiescent d-axis and q-axis current to a synchronizing d-axis and q-axis current using a control angle signal. A current controller generates a synchronizing d-axis and q-axis command current. [Reference numerals] (110) Speed controller or torque controller; (130) Current controller; (140) Compensation unit; (150) Coordinate system inverse transformation unit; (160) SVPWM inverter; (170) Current detector; (180) Phase conversion unit; (190) Coordinate conversion unit
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