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Wind power control technology
is an important part of intelligent control in wind farms. By the automatic
calculation and implementation of control strategy, problems such as imprecise of
manual control scheduling, slow adjust rate, heavy workload, etc. have been
solved. It can improve the capacity of wind power grid, and it also has the
important meaning to the safe and stable operation of power grid. This paper
introduces wind power control system from certain aspects such as control mode,
control principle, and so on.
A new precision peak detector/full-wave rectifier of input sinusoidal signals, based on usage of dual-output current conveyors, is presented in this paper. The circuit gives a DC output voltage that is the peak input voltage over a wide frequency range, with a very low ripple voltage and low harmonic distortion. The proposed circuits use an all-pass filter as a 90° phase shifter of the processed input signal. To verify the theoretical analysis, the circuit SPICE simulations results have also been included, showing good agreement with the theory. Inherently, the circuit is well suited for IC implementation.