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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...
The direct torque controlled (DTC) permanent magnet synchronous motor (PMSM) drive has become competitive compared with other types of drive systems because of its simple and sensorless control algorithm. The application of the system, however, is handicapped by the difficulty of starting under full load due to the unknown initial rotor position. This paper presents a nonlinear model of PMSMs which...
Sensorless permanent magnet synchronous motor (PMSM) drive systems have become very attractive due to their advantages, such as reduction of hardware complexity and hence the system cost and increment of system reliability. In order to correctly obtain the rotor position information required for the appropriate control, various methods have been proposed. Among them, the most versatile method makes...
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