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In this paper a comprehensive nonlinear model of surface mounted permanent magnet (PM) synchronous machine (SPMSM) is developed considering both the structural and saturation saliencies. After experimentally identifying all the parameters, a nonlinear mathematic model of SPMSM is built, in which the rotor position and stator current are taken as the variables to calculate the inductances. A pulse...
For a practical direct torque controlled (DTC) permanent magnet synchronous motor (PMSM) drive system, the information of the initial rotor position, which is usually obtained by a mechanical position sensor, is essential for starting under the full load. In order to avoid the disadvantages of using mechanical position sensors, great efforts have been made on the development of sensorless control...
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