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To solve the problem of the low return on investment in the traditional micro grid, multi energy interconnected micro grid were constituted by distributed photovoltaic, gas turbine, combined cooling heating and power supply system (CCHP). Because power generation of distributed photovoltaic has uncertainty and the load of cold, hot and electricity is unbalance, the optimizesion of microsource configuration...
A self-tuning two degree of freedom (2-DOF )PID controller based on fuzzy inference is presented. In view of the deficiency of conventional 2-DOF PID controller in the parameter time varying system, integrate the two-degree-of-freedom PID control with fuzzy techniques, a self-tuning PID controller based on fuzzy inference is designed. On-line automatically tuned parameters are realized at different...
The article adopts two different methods to solve the ripple problem of direct torque control in the low speed region according as different control frequency. They are variable structure control. In the subaltern low speed region, the partition of flux linkage region is added and the system optimizes the choice of switch vector. In exceeding low speed region, the system utilizes prediction to reduce...
In order to improve the traditional PID controller used in the machine control system, this paper discusses the algorithm of dual freedom PID control and apply it to the AC permanent magnetism synchronous motor, and presents the method and structure of its designation .By this control algorithm, the question which PID controller can't give both excellent track performance and prefect interference...
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