توضیحات
This paper proposes a robust control based on generalized predictive control (GPC) applied to the current control loop for a switched reluctance motor (SRM) drive. The proposed controller has two degrees of freedom where the setpoint tracking is decoupled from the load disturbance rejection at the nominal case. In addition a filter design is proposed in order to achieve good relationship among robustness, load disturbance rejection, and noise attenuation. Simulation and real experimental results are shown to illustrate the controller performance
Introduction
SRMs are an alternative and modern solution to electromechanical conversion with variable speed. The availability of highfrequency switching devices and improvements in machine design, associated with SRM intrinsic simplicity, reliability, low cost, high power capacity, and fault tolerant operation have made
it a viable replacement for conventional motor drives [1,2]. SRMs have been traditionally controlled by either open loop hysteresis or closed-loop pulse-width-modulation (PWM) current controllers. Each scheme presents advantages and drawbacks with regard to parametric variations, accuracy, robustness, and dynamic response over the entire speed range. The hysteresis current controller is popular because of its inexpensive, simple, and
easy-to-use architecture [3–5]. However, there are well known disadvantages, such as variable switching frequency and high ripple current, making it undesirable for many applications. On the other hand, PWM controllers provide better control loop characteristics compared to their hysteresis counterparts, although they are more complex to be designed and require more computation effort, such drawbacks can be overcome by using digital signal processors (DSPs). In addition, in order to achieve improved efficiency the SRM must operate under magnetic saturation
Year:2014
By :Bismark C. Torrico,R^omulo N. de C. Almeida,Laurinda L. N. dos Reis1,Wellington A. Silva,Ricardo S. T. Pontes
File Information :English Language/7Page/Size :1.2M
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سال :2014
کاری از :Bismark C. Torrico,R^omulo N. de C. Almeida,Laurinda L. N. dos Reis1,Wellington A. Silva,Ricardo S. T. Pontes
اطلاعات فایل :زبان انگلیسی/7 صفحه/حجم :1.2M
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