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This paper presents a novel encoder-less vector control strategy which is universally applicable to both induction motors (IMs) and permanent-magnet synchronous motors (PMSMs). A fast rotor flux linkage phase estimator using stator flux linkage information obtained by a high-precision approximation voltage integral with error compensation is shown. Using this estimator, the authors construct a unified...
Based on mathematical analysis, the dynamic mathematical model of asynchronous motor with iron loss and the model without iron loss are deduced. Using the basic modules and S-function of MATLAB/SIMULINK, the simulation models of three phase asynchronous motor with iron loss and without iron loss are built. Compare the two models with the results of simulations, and give the influence on stator current,...
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