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This paper presents a robust control strategy for voltage controller of grid-connected inverter. The combining of feedback-feedforward control and ℋ− repetitive control is introduced to improve tracking performance and reduce the period disturbance. The achieved objective is robustly regulate voltage, good dynamic and tracking response. The proposed controller is tested in simulation by MATLAB/SIMULINK...
This paper presents a robust control strategy for voltage controller of grid-connected inverter. The combining of feedforward control and H∞ repetitive control is introduced to improve tracking performance and reduce periodic disturbance. The feedforward part of 2DOF controller extends gain and tracking bandwidth of the feedback controller when comparing to 1DOF controller. The proposed controller...
In this article a methodology for designing a minimum gain PID controller for load frequency control in power system is proposed. The resulting PID controller reduces the required control effort while guaranteeing that pre-defined design specifications like settling time and damping ratio are achieved in the response. For this purpose a subset of the complex plane corresponding to the design specifications...
Load frequency control as it is known means how to control the deviation in the plant frequency which happens due to a sudden changes in the power demand. the frequency is one of very important parameters which must be kept with minimum sensitivity to such a perturbations. For this reason the present work deals with studying the different types of feedback controller which has been used such as, H...
A novel power system frequency control strategy is designed in this paper, which is mainly used to improve the stability of the islanding power system. Detecting the change of circuit breaker status, it is feasible to identify the serious accidents, for instance, a generator outage or disconnection from main grids, and so on. The balanceable power before disturbance and the capacity of the removed...
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