Maximum Torque per Ampere Control Strategy for Permanent Magnet Synchronous Motor
Efficiency optimization control of permanent magnet synchronous motor (PMSM) based on maximum torque per current (MPTA) is presented.For those PMSM in which d-axis inductance is not equal to q-axis inductance,the relation formulas of d,q axis currents and torque are derived via extremum principle on the basis of the PMSM basic equations.The control scheme of maximum ratio of torque to current was proposed.Simulation results show that this control strategy can decrease the stator current and improve the efficiency of the system.
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