Adaptive Theory-Based Improved Linear Sinusoidal Tracer Control Algorithm for DSTATCOM

Abstract—This paper presents a hardware implementation of three-phase distribution static compensator (DSTATCOM) using an adaptive theory-based improved linear sinusoidal tracer (ILST) control algorithm for different functions of DSTATCOM such as reactive power compensation for power factor correction, harmonics elimination, load balancing, and zero-voltage regulation under linear/nonlinear loads.AnILST-based control algorithm is used for the extraction of fundamental load currents and their active and reactive power components. These components are used for the estimation of reference source currents. A prototype of DSTATCOM is developed and its real-time performance is studied using a digital signal processor. The performance of DSTATCOM is found satisfactory with the proposed control algorithm under various types of loads.

(Index Terms—Improved linear sinusoidal tracer (ILST) control algorithm, power factor correction (PFC), power quality, reactive power, voltage source converter (VSC), zero voltage regulation (ZVR).)