Design and Development of ANFIS Controller for STATCOM in dSPACE Environment

Reactive power compensation is an important issue in the control of electric power system. Reactive power from the source increases the transmission losses and reduces the power transmission capability of the transmission lines. Moreover, reactive power should not be transmitted through the transmission line to a longer distance. Hence Flexible AC Transmission Systems (FACTS) devices such as static compensator (STATCOM) unified power flow controller (UPFC) and static volt-ampere compensator (SVC) are used to alleviate these problems. In this paper, a voltage source converter (VSC) based STATCOM is developed with PI and Adaptive Neuro Fuzzy Inference System (ANFIS) controllers. The conventional PI controller has more tuning difficulties while the system parameter changes, whereas an ANFIS controller requires less computation time and characteristics of both fuzzy and neuron controllers. The ANFIS has the ability to generalize and can interpolate in between the training data as well as the membership function has been decided according to the training data. The ANFIS controller designed was tested on a 75V, 100 VA STATCOM in real time environment via state- of- the- art of digital signal processor advanced control engineering (dSPACE) DS1104 board and it was found that it was producing better results than the PI controller. Copyright (C) 2011 Praise Worthy Prize S.r.l. - All rights reserved.