ANFIS-based Controller Application to Regulate Firing Angle of Inverter in Average Value Model-High Voltage Direct Current Transmission System

Abstract

This research is to regulate firing angle inverter-side of high voltage direct current (HVDC) system using ANFIS-based controller. Average-value model (AVM) is used to implement the HVDC systems because the AVM is needed in level-system simulation of power systems. The AVM neglects switching-device responses and time scale of the AVM is lower than detailed model. Controller based on ANFIS is implemented to control firing angle of inverter-side HVDC because this controller is simple and easy to be implemented. The HVDC system is constructed by using Matlab/Simulink programming. Initializing the variable and parameter of HVDC is loaded to the Matlab workspace using script programme. Some modules for converter, inverter and their controller are developed. Next, the ANFIS controller that consist of 7 inputs and a single output is applied to inverter module. Membership function (MF) that used for input and output are Gaussian MF and constant MF (Sugeno type 0), respectively. The ANFIS scheme control responses are compared to conventional controller responses to validate the ANFIS scheme controller.