Field Oriented Control of a Permanent Magnet Synchronous Motor using a DSP
|Yadu Kiran1, Dr.P.S.Puttaswamy2
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This paper deals with the vector control of a Permanent Magnet Synchronous motor (PMSM) employing Sinusoidal Pulse Width Modulation. These motors are becoming increasingly popular in industrial applications due to their high-efficiency, fast dynamic response and compact size. Until recently, programming and implementation costs of high-performance control algorithms for these motors have been prohibitive. However, great strides have been made by hardware manufacturers such as Microchip, Freescale, IRetc to facilitate these algorithms in the architecture of their processors. This has brought down the development costs significantly and opened up whole new avenues for PMSM. The paper details a drive system which utilizes a DSP to implement Field Oriented Control (FOC) of the motor. The mathematical model of a PMSM is discussed and a Simulink model of the entire drive system is illustrated. Simulation runs are conducted for different working conditions and compared with the practical results.