Permanent Magnet Synchronous Motor is widely used in appliances, robots, hybrid electric vehicle, and many other motor applications. permanent magnet synchronous motor has a small size, high efficiency and high performance. Field–Oriented control is a efficiently used method to control the torque as well the speed of permanent magnet synchronous motor. This paper presents a mathematical model of permanent magnet synchronous motor, which is multipole stator winding with constant excitation feeds from the permanent magnet which is mounted on the rotor. Only surface permanent magnet synchronous motor is considers in this paper.
Power switching electronic is used to generate the desired voltage/current from DC source. Pulse Width Modulation technique controls the switching power electronic by creating a control signals which are applied to their gates. The whole circuit of the inverter based on space vector pulse width modulation is simulated in MatLab, Simulation and its results are presented.
Field–Oriented Control, or vector control, is implemented via Digital Signal Processors to control permanent magnet synchronous motor. Clarke and Park transformations are applied to “abc” coordinate frame of permanent magnet synchronous motor model to get the “qd” coordinate frame that is used in field oriented control technique. Hence, the developed torque and the magnetizing the flux component are controlled separately. Since the rotor angle is required for Park transformation, field oriented control is classified into two types; indirect, or called sonsorless, and direct, or called sorsonsored, method. In this paper is only sonsored FOC is presented. PI controller is used to control the motor speed and torque. PI controllers are design using frequency response method and symmetric optimum method. The whole system is simulated based on the mathematical model of PMSM and field–oriented control method with designed PI controllers. Simulation results show the PMSM have a perfect dynamic response.
Digital signal processors is a high speed processor which can implement the field oriented control algorithms and compute the parameter in real time. A Texas Instruments kits and software are used to implement field-oriented control of permanent magnet synchronous motor. The paper includes a short review of DSP controller. Implementation of field–oriented control of permanent magnet synchronous motor shows that motor has satisfactory response in terms of torque ripple and speed response.
|Commitee:||Alkin, Oktay, LeAnder, Robert, Lozowski, Andrew|
|School:||Southern Illinois University at Edwardsville|
|Department:||Electrical and Computer Engineering|
|School Location:||United States -- Illinois|
|Source:||MAI 53/01M(E), Masters Abstracts International|
|Keywords:||DSP, Field-orient control, Inverter, PMSM, PWM, Pi-controller|
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