Shunt active power filter control using signal of load equivalent conductance in asymmetrical three-phase systems under nonsinusoidal conditions

What is it about?

Shunt active power filters (SAPF) can be controlled using conductance signal related to the load active power. The distinctive feature of the considered control method is that certain changes of energy stored in the active filter’s reactance elements are utilized as the source of information concerning the load power and then the reference signal for the SAPF action.

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Why is it important?

Particularly difficult SAPF operating conditions can occur in systems with asymmetrical and distorted supply voltages. The paper deals with these problems.