Implementation of current control techniques for Uninterruptable Power Supply

Author

Saraswathy, S. ; Punitha, K. ; Devaraj, Deepashree

Author_Institution

Dept. of Electrical and Electronic Engineering, Kalasalingam University, Krishnankoil, Virudhunagar DT (TN), India

fYear

2013

fDate

20-21 March 2013

Firstpage

589

Lastpage

595

Abstract

In this paper, the most widely used adaptive hysteresis band current controller is proposed for Voltage Source Inverter used in Uninterrupted Power Supply (UPS) to eliminate harmonics in output voltage and current. By comparing with other controllers, the Hysteresis band (HB) is used in this controller which makes the current error back to zero by recursively stepping through successive voltage levels. The adaptive hysteresis band current controller changes the hysteresis bandwidth according to switching frequency, supply voltage, dc capacitor voltage and slope of the reference compensator current wave. The output result of an adaptive hysteresis current controller is compared with the fixed hysteresis current controller and also with the Pulse Width Modulated (PWM) controller for the same Voltage Source Inverter. Simulations have been carried out through MATLAB Simulink Power System Toolbox in MATLAB 2010a.

Keywords

Capacitors; Hysteresis; Integrated circuits; Inverters; Switches; Transforms; Zinc; Adaptive hysteresis current controller; Fixed hysteresis controller; Pulse Width Modulation (PWM); Total Harmonic Distortion (THD);

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits, Power and Computing Technologies (ICCPCT), 2013 International Conference on

Conference_Location

Nagercoil

Print_ISBN

978-1-4673-4921-5

Type

conf

DOI

10.1109/ICCPCT.2013.6528898

Filename

6528898