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Abstract
This paper develops a novel sliding mode control technology and a comprehensive evaluation methodology for speed control of permanent magnet synchronous motor (PMSM). In most of the existing literature, only control precision of the speed corrector is investigated. However, the control strategy should be stable to the noise and disturbance caused by the environment and parameter uncertainties. In order to possessing faster dynamic response, stronger anti-interference ability and high stability of input, a highly stable sliding surface is proposed for siding mode control. Unlike most of reaching laws that requires the variation of designed sliding surfaces, this method takes state vectors in consideration. In addition, a comprehensive evaluation algorithm is presented to obtain reasonable assessment on speed control for synchronous PMSMs in different operating phases (starting, transient, steady-state rating). Finally, the simulation results verify the effectiveness and validity of the proposed sliding mode speed controller.
Highlights
Due to the advantages of reliable operation, high efficiency and low loss, permanent magnet synchronous motor plays a crucial role in many industrial applications, such as aerospace industry, robot industry, petroleum industry and metallurgical industry, especially in the field of electric vehicles
The methods to control permanent magnet synchronous motor (PMSM) can be categorized into several types such as vector control [1], direct torque control [2] and adaptive control [3]
The main contributions of the proposed method are as follows: (1) Compared with conventional sliding mode control, the method proposed in this paper greatly reduces the maximum overshoot of speed after the PMSM just started, and improves the anti-interference ability of the motor when its load changes
Summary
Due to the advantages of reliable operation, high efficiency and low loss, permanent magnet synchronous motor plays a crucial role in many industrial applications, such as aerospace industry, robot industry, petroleum industry and metallurgical industry, especially in the field of electric vehicles. The system of PMSM is affected by parameter variations, load disturbance and nonlinear dynamics during operation if the control performance is degeneration. More and more scholars pay attention to the control strategies design of performance of PMSM. The methods to control PMSM can be categorized into several types such as vector control [1], direct torque control [2] and adaptive control [3]. Vector control ( called magnetic field orientated control (FOC)) uses coordinate transformation to realize the performance of alternating-current (AC) motor similar to direct-current (DC) motor.
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