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- Title
Comparative Study on Carrier Over Lapping Bipolar PWM Strategies for Three Phase Five Level Diode Clamped Inverter.
- Authors
Balamurugan, C. R.; Natarajan, S. P.; Bensraj, R.
- Abstract
This paper presents the comparison of Carrier Overlapping Pulse Width Modulation (COPWM) techniques for Diode Clamped Multi Level Inverter (DCMLI). The DCMLI is controlled with Sinusoidal PWM (SPWM) technique, Third Harmonic Injection (THI) PWM technique, Sixty degree PWM and Stepped wave techniques with Carrier Overlapping (CO). The variation of Total Harmonic Distortion (THD) in the output is observed for various modulation indices. Simulation is performed using MATLAB-SIMULINK. It is observed that COPWM-C strategy provides output with relatively low distortion for all the four strategies developed. It is also found that lowest distortion exists for stepped wave reference with COPWM-C carrier. COPWM-A is also found to perform better since it provides relatively higher fundamental RMS output voltage for all the four references. De distortion exists for stepped wave reference with COPWM-C carrier. COPWM-A is also found to perform better since it provides relatively higher fundamental RMS output voltage for all the four references. Depending on the performance measure required in a particular application of chosen MLI, appropriate PWM strategies may be employed.
- Subjects
ELECTRIC inverters; ELECTRIC current converters; ELECTRON-tube diodes; ELECTRON tubes; ELECTRICAL harmonics; ELECTRIC waves
- Publication
International Review on Modelling & Simulations, 2012, Vol 5, Issue 4, p1429
- ISSN
1974-9821
- Publication type
Article