This paper proposes a control strategy of finite control set model predictive torque control (FCS-MPTC) with a deadbeat (DB) solution for PMSM drives. By using a deadbeat solution, the process of selections of best switching vector is optimized. The predicted deadbeat voltage sector consisting of the desired voltage vector avoids the complete enumeration for testing all feasible voltage vectors, which relieves the big calculation effort of the traditional FCS-MPTC method. The proposed system is carried out experimentally both in steady state and in transient state. Index Terms-Torque control, optimization, model predictive control (MPC), deadbeat (DB), permanent magnet machines.

No abstract

No abstract

No abstract

No abstract

For salient-pole permanent magnet synchronous motor (PMSM), the amplitude of extended back electromotive force (EEMF) is determined by rotor speed, stator current and its derivative value. Theoretically, even at extremely low speed, the back EEMF can be detected if the current in q-axis is changing. However, it is difficult to detect the EEMF precisely due to the current at low speed. In this paper, novel full-order multi-input and multi-output discrete-time sliding mode observer (SMO) is built to detect the rotor position. With the proposed rotor position estimation technique, the motor can start up from standstill and reverse between positive and negative directions without a position sensor. The proposed method was evaluated by experiment.

No abstract

No abstract