Title :
Comparative study of pulse width modulation techniques for three-level voltage source based on cascaded connection of two-level inverters
Author :
Votava, Martin ; Glasberger, Tomas
Author_Institution :
Regional Innovation Centre for Electr. Eng. (RICE), Univ. of West Bohemia, Pilsen, Czech Republic
Abstract :
The objective of this paper is to give an overview and comparison of control techniques for a three-level voltage source inverter based on dual connection of two-level converters supplied by two independent voltage sources. The compared modulation techniques are based on carrier based PWM, six step and space vector PWM with changeover of the inverters roles from clamping to switching inverter and vice versa. A simulation model of the converter has been designed for comparison of mentioned control algorithms including phase disposition PWM with selected criteria as switching losses, balanced load of switching elements, spectral analysis and THD of the output voltage waveform.
Keywords :
PWM invertors; cascade networks; clamps; harmonic distortion; power conversion harmonics; spectral analysis; switching convertors; THD; carrier based PWM; cascaded connection; control algorithms; control techniques; phase disposition PWM; pulse width modulation techniques; space vector PWM; spectral analysis; switching elements; switching inverter; switching losses; three-level voltage source inverter; total harmonic distortion; two-level inverters; voltage waveform; Inverters; Pulse width modulation; Switches; Switching circuits; Transistors; Voltage control; Multi-level inverter; PWM; cascaded connection; dual inverter; sixstep;
Conference_Titel :
Electric Power Engineering (EPE), 2015 16th International Scientific Conference on
Conference_Location :
Kouty nad Desnou
DOI :
10.1109/EPE.2015.7161163
