Composite feedforward-feedback controller for generator excitation system |
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Authors: | Xiaofang Yuan Yaonan Wang Lianghong Wu |
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Institution: | (1) College of Electrical and Information Engineering, Hunan University, Changsha, 410082, China |
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Abstract: | This paper proposes a composite feedforward-feedback controller for a generator excitation system. By integrating both feedforward
and feedback compensation, the composite controller composes a feedforward approximate controller and an error-feedback proportional-integral-derivative
(PID) compensator. The feedforward controller is derived based on an approximation model method, which not only avoids complex
computation, but also avoids online learning or adjustment. Only a general support vector machine (SVM) modeling technique
is involved in a feedforward controller implement. Meanwhile, the feedback controller is constructed using a PID controller.
Then the attenuation of both disturbances and estimated errors is guaranteed. Several simulations illustrate the effectiveness
of the composite excitation controller. |
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Keywords: | Nonlinear control Feedforward control Feedback control Approximate model Support vector machines Model identification |
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