Experimental results of the current-source active power filter with a new control delay compensation method

In this paper an experimental results for a new control system of the current-source active power filter is presented. The control system includes a simple method for compensating the sampling and calculation delays of the digital control system. The compensation in the proposed method is achieved using the regular LC filter of the active power filter as energy storage for load currents and no additional components is needed in the main circuit. Furthermore, the calculation power demand of the compensation method is very low and is therefore suitable for single-chip microcontroller implementations. The proposed control system is realized using a 32-bit Motorola MPC555 microcontroller.