| 摘要 |
<p>A motor control device is provided with: a conversion means (7) that converts a primary current (I) detected at the output end of a motor into a torque current detection value (Iqd) and an excitation current detection value (Idd); a magnetic flux estimation means (8) that uses a primary delay component of the excitation current detection value (Idd) to calculate a rotor magnetic flux estimation value; a torque current instruction calculation means (9) that calculates and outputs a torque current instruction (Iqc) for which a provided torque instruction (taur) is divided by the rotor magnetic flux estimation value (phidr) and further divided by a predetermined constant (k); an excitation current instruction calculation means (10) that calculates the absolute value of the torque current instruction (Iqc) and outputs the absolute value as an excitation current instruction (Idc); and a vector control means (11) that carries out vector control in such a way that the torque current detection value (Iqd) and the excitation current detection value conform with the torque current instruction and the excitation current instruction, respectively, and generates a control signal (Sc) for turning a switching element of an inverter circuit (4) ON or OFF.</p> |
