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Comparison of Maximum Torque per Ampere and Loss Minimization Control for the Interior Permanent Magnet Synchronous Generator

In this paper maximum torque per ampere and loss minimization control methods for an interior permanent magnet synchronous motor are compared. Interior permanent magnet synchronous motors have wide application due to high efficiency, high power density, high power factor and wide speed operating range. Maximum torque per ampere control method finds optimal d- and q-axis stator currents that produce desired electromagnetic torque while minimizing stator current magnitude. Loss minimization control method takes into account both copper and iron loss and finds optimal d- and q-axis stator currents that produce desired electromagnetic torque while minimizing total power loss. Characteristic curves for both control methods considering magnetic saturation are presented. Feed-forward torque control model developed in MATLAB/Simulink was used to verify described control methods.

Interior permanent magnet synchronous motor ; Maximum torque per ampere ; Loss minimization ; Torque control

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