Abstract—In this paper a current reference generation

method for a voltage source shunt active power filter is

examined. The proposed method improves the harmonic

filtering by compensating the delays in the system. In

stationary operating point of the load the method uses

measurement data sampled in previous periods to generate a

reference prediction. Since in transient state of the load the

prediction no longer holds true, a computational control delay

compensation algorithm is used in the reference generation

instead of the prediction in this situation. Changing the

algorithm according to the operating point guarantees effective

harmonic compensation in all operating points. In this paper

the system performance is examined with an active filter

simulation model.