| 摘要 |
PROBLEM TO BE SOLVED: To prevent deterioration in torque control performance of vector control, by providing a motor equivalent circuit constant change estimating calculating means inputting a magnetic flux command value, inverter frequency, command values of d-axis and q-axis currents and voltages, to calculate and output mutual inductance estimated value and secondary resistance estimated value. SOLUTION: A motor equivalent circuit constant change estimating calculator 11 inputs a magnetic flux command value Φef, inverter frequency finv, d-axis current command value IdRef, q-axis current command value IqRef, d-axis voltage command value Vd and q-axis voltage command value Vq, and calculates and outputs a mutual inductance estimated value M- H and secondary resistance estimated value R2- H based on the inputs. Torque and magnetic flux are controlled by using the values M- H and R2- H. Thus, even if a gap change or the like between a reaction plate and an armature coil exists, a control without deterioration of torque control performance of vector control is executed. |
