Real-time dynamic control of dynamic power filters in supplies with high contamination

A real-time closed-loop system for controlling dynamic power filters under rapidly varying nonlinear loading conditions is tested and evaluated. With the aid of a dedicated microprocessor system, using correlation algorithms, real-time reference signals for a dynamic compensation system are generated. In order to facilitate a cost effective compensation system, separate compensation of the fundamental reactive power component and the harmonic components is further investigated. A total algorithm time of 312 mu s for a 50 Hz system is achieved, providing accurate compensation effort up to the 21st power system harmonic.<
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