| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem of a controller of a motor that the waveform of an output voltage is varied in the vicinity of zero-cross by a torque current due to the effect of a dead time set to prevent the short circuit of transistor output circuits connected vertically and the responsiveness of the torque current is deteriorated. <P>SOLUTION: An exciting current command value switching section 17 delivers a non-zero exciting current command i<SB>d</SB>* as an exciting current command i<SB>d</SB>to an exciting current feedback control section 5. The exciting current feedback control section 5 delivers an exciting component voltage command for matching a detected exciting current component to the exciting current command i<SB>d</SB>to an output command phase converting section 8. A torque current feedback control section 4 delivers a torque component voltage command for matching a detected torque current component to a torque current command i<SB>q</SB>to the output command phase converting section 8 where these commands are converted and delivered as a PWM control-section input signal to a PWM control section 19. <P>COPYRIGHT: (C)2004,JPO |
