| 摘要 |
PROBLEM TO BE SOLVED: To provide a control circuit that performs such processing as is equivalent to resting coordinate transformation of correction value signals generated by predetermined control following rotating coordinate transformation and as has linear time invariance.SOLUTION: A control circuit 7' includes: a three-phase-to-two-phase conversion section 73 for converting three-phase current signals to an α axis current signal and a &bgr; axis current signal; an α axis current controller 74' for signal-processing a deviation signal derived from the α axis current signal and a desired value by a first transfer function to generate a first correction value signal; a &bgr; axis current controller 75' for signal-processing a deviation signal derived from the &bgr; axis current signal and a desired value by the first transfer function to generate a second correction value signal; a two-phase-to-three-phase conversion section 76 for converting the first and second correction value signals to three correction value signals; and a PWM signal generation section 77 for generating PWM signals on the basis of the three correction value signals. The first transfer function is G(s)={F(s+jω)+F(s-jω)}/2, where F(s) is a transfer function representing predetermined control processing. |
