Title :
On Three-Phase Six-Switches Voltage Source Inverter: a 150° Conduction Mode
Author :
Saied, Mohamed H. ; Mostafa, M.Z. ; Abdel-Moneim, T.M. ; Yousef, H.A.
Author_Institution :
Dept. of Electr. Eng. I, Abu-Qir Fertilizers & Chem. Ind. Co., Alexandria
Abstract :
This paper presents a new modification for the most-common, simple, and well-known three-phase six-switch voltage source inverter (VSI). In this modification, each one of the six transistors conducts for 150deg instead of the known 180deg or 120deg conduction modes. For a wye-connected load, the output phase-voltage becomes a seven-level, 12 steps waveform. This results in a 50% reduction of the total harmonic distortion (THD), 75% reduction of voltage distortion factor (DF), and the lowest harmonic order (LOH) becomes 11 rather than 5. Comprehensive study for the three conduction modes is proposed, and a comparisons with other types of voltage source inverters, like the neutral point clamped (NPC) and the multilevel inverters (MLI) were also carried out. Simulation and experimental results show the contribution of the proposed strategy
Keywords :
harmonic distortion; invertors; power transistors; THD; conduction mode; lowest harmonic order; multilevel inverters; neutral point clamped inverters; output phase-voltage; three-phase six-switches voltage source inverter; total harmonic distortion; transistors; voltage distortion factor reduction; wye-connected load; Bridge circuits; Circuit faults; Electromagnetic interference; Insulated gate bipolar transistors; Leg; Pulse width modulation; Pulse width modulation inverters; Switches; Total harmonic distortion; Voltage; 12-Step waveform; 150° condition mode; seven-level inverter; total harmonic distortion; voltage source inverters;
Conference_Titel :
Industrial Electronics, 2006 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0496-7
Electronic_ISBN :
1-4244-0497-5
DOI :
10.1109/ISIE.2006.295694
