Title :
DC link voltage balancing in multilevel inverter
Author :
Balamurugan, M. ; Sahoo, Sarat Kumar ; Karthikeyan, S. Prabhakar ; Lall, Krishna Prabhakar ; Raglend, I. Jacob
Author_Institution :
Sch. of Electr. Eng., VIT Univ., Vellore, India
Abstract :
This paper presents an effective method to control the DC link voltage balance in diode clamped Multilevel Inverter. To trigger the gate pulse for the switches, Level Shifted PWM technique is used. Two closed PI controllers are used for balancing the DC voltage control and load voltage control and also used for analyzing the performance parameters and their responses are displayed in the table. The simulation is made in Matlab/Simulink and their harmonic distortions are analyzed through the Fast Fourier transforms window and the end results are tabulated. The computer simulation results show the effectiveness of this method.
Keywords :
PI control; PWM invertors; fast Fourier transforms; harmonic distortion; load regulation; voltage control; DC link voltage balancing; DC voltage control; closed PI controllers; diode clamped multilevel inverter; fast Fourier transforms; gate pulse; harmonic distortions; level shifted PWM technique; load voltage control; multilevel inverter; Capacitors; Harmonic analysis; Inverters; Power harmonic filters; Pulse width modulation; Topology; Voltage control; Harmonics; Multilevel Inverter; PWM;
Conference_Titel :
Circuit, Power and Computing Technologies (ICCPCT), 2015 International Conference on
Conference_Location :
Nagercoil
DOI :
10.1109/ICCPCT.2015.7159461
