An implementation of double-frequency oscillation cancellation technique in control of DSTATCOM

Abstract

This paper presents an implementation of double-frequency oscillation cancellation (DFOC) technique in phase locked loop less synchronous reference frame theory for control of a distribution static compensator (DSTATCOM). This control algorithm on DSTATCOM is used for improvement of power quality under linear and nonlinear loads. The DFOC technique is used for cancellation of double-frequency component from the load fundamental active and reactive power components of currents which are used for deriving the reference supply currents without time delay. A DSTATCOM is developed, and its performance is tested using a digital signal processor. The performance of DSTATCOM is found satisfactory for different types of loads in transient and steady state conditions.