Abstract
A novel four quadrant operation control strategy of permanent magnet synchronous motor (PMSM) drive systems is proposed. In order to regulate precisely output direct current (DC) bus voltage and achieve the control of unity power factor, the exponential functional-based sliding mode reaching law (ESMRL), which adapts to the variations of the grid-side inverter and sliding mode surfaces, is developed. The mathematical model of PMSM based on port-controlled Hamiltonian (PCH) is established according to the energy-balancing point of view. On the basis of energy optimization and operation in four-quadrant, the PCH controller using energy-shaping and passivity-based control is applied in motor-side inverter. The controllers proposed ensure that the motor can run in four-quadrant, energy is bidirectional flow, the DC bus voltage is controllable, the power factor is near one and energy consumption is smaller. The simulation results authenticate the validity of the presented control algorithms.
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