62. Study of Current Controller Design and Performance Based on PMA RSM Model Decoupling

The permanent magnet assisted reluctance synchronous machine (PMA RSM) is a controlled object of multi-variable, nonlinearity and strong coupling. The fact that d-axis current can be controlled by d-axis voltage directly, same as the q-axis current, can not be realized even if the field current and torque current have been decoupled in the synchronous coordinates. A decoupling method for the electrical model is presented, which means the speed voltage and mutual inductance voltage are subtracted in the machine model proposed. Therefore the control of d- and q-axis components is changed to single-loop independent control system. Then a current controller is designed, which is applied to the current control of PMA RSM. The result from simulation shows that it is of high performance of dynamic and robustness.