A novel control algorithm of shunt active power filter based on voltage detection

In the system with multi-sources and multi-loads, the shunt active power(SAPF) filter could not work effectively by the reason of difficulty to detect the all the load current or source current by an APF. Aiming to solve the problem, this paper presents a novel control algorithm of APF based on PCC voltage detection without current detection. The paper analyzes the relationship between the PCC voltage and the load harmonic current, and focuses on the research about the control algorithm. Simulations for the shunt active power filter are implemented and the experimental results confirm the theoretical analysis.