| 摘要 |
PROBLEM TO BE SOLVED: To provide a control circuit for a motor driving inverter circuit capable of performing stable control.SOLUTION: A control circuit 6' comprises: a three-phase/two-phase converter 61 converting a three-phase current signal into an α-axis current signal and a &bgr;-axis current signal; an α-axis current controller 62'a performing signal processing of a deviation signal between the α-axis current signal and a target value by using a first transfer function to generate a first correction value signal; a &bgr;-axis current controller 62'b performing signal processing of a deviation signal between the &bgr;-axis current signal and the target value by using the first transfer function to generate a second correction value signal; a two-phase/three-phase converter 63 converting the first and second correction value signals into three correction value signals; and a PWM signal generator 64 generating a PWM signal on the basis of the three correction value signals. In the case where a transfer function representing predetermined control processing is defined as F(s), the first transfer function is represented by G(s)=[F(s+jω)+F(s-jω)}/2. |
