On-line automatic decoupling and parallel control method of power modules of modular active power filter
A power filter and power module technology, applied in active power filter, AC network to reduce harmonics/ripples, etc., can solve the problems of control system paralysis, poor reliability, enhanced interaction between modules, etc., to overcome communication problems The effect of more connection lines, optimizing the capacity configuration of the device, and improving the operation efficiency of the device
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[0026] A power module online automatic decoupling and parallel control method of a modular active power filter, such as figure 2 , using the wireless parallel control strategy, the power modules of the modularized APF are independent of each other and have no communication with each other; the modularized APF realizes the automatic online decoupling and paralleling of the power modules according to the change of the harmonic load and the principle of optimal operation efficiency of the device control;
[0027] Basic parameter setting of the modular APF device: the number of power modules is N; the rated capacity of the power modules is S N ; The output harmonic compensation capacity of the power module is S C ;Compensation rate of power module C=S C / S N ;Device capacity resolution R, initialization R=S N / (N×S N )=1 / N.
[0028] Taking the number of power modules N=5 as a specific case, the implementation process of the power module online automatic decoupling and paral...
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