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This paper proposes a simple and effective method to reduce torque ripples for the torque predictive control (TPC) of permanent-magnet synchronous motors (PMSMs). The conventional TPC analyzes the relationship among the electrical torque, stator flux, and stator voltage using the magnitude of the stator voltage vector of PMSMs to obtain the angle of the reference voltage vector and accurately control...
This paper presents a simple algorithm for estimation of the rotor position. The injected high frequency voltage is a sinusoidal voltage and is injected into the stator of a motor. An interior permanent magnet synchronous motor (IPMSM) has spatial saliency because d-axis inductance and q-axis inductance are different from each other. The injected high frequency voltage is influenced by saliency. Therefore,...
In this paper, the observer based on the flux estimation method is presented. There are reduced-order and full-order types in flux observers based on the flux estimation. Reduced-order flux observers have a simple structure and short calculation time. However, they have drawbacks which comes from noise and disturbance. Therefore, full-order flux observers are used in this paper. Conventional full-order...
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