Abstract
A novel feedback control scheme for speed regulation of permanent magnet synchronous motor (PMSM) is presented based on energy-shaping and port-controlled Hamiltonian (PCH) systems theory. The desired state error port-controlled Hamiltonian structure is assigned to the closed-loop PMSM system by feedback control. Using interconnection and damping assignment passivity-based control (IDA-PBC) methodology, speed controllers are designed when the load torque is known and unknown, respectively. The stability of the desired equilibrium point satisfying the maximum torque per ampere (MTPA) control rule is also analysed. Proportional integral (PI) control of speed error is used to estimate the unknown load torque. At last, the speed controller is implemented based on space vector pulse-width modulation (SVPWM) control rule. By controlling every inverter switch, three-phase PWM voltages satisfying the speed regulation requirement are provided to the stator windings of PMSM. The good dynamic and steady-state performances of the presented scheme are verified by simulation results.
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