Single Phase 9 Level PWM Inverter with self balancing Capacitors |
Author(s): |
| PRAVEEN VIJAYAN , Mar Athanasius College of Engineering, Kothamangalam; Acy M Kottalil, Mar Athanasius College of Engineering, Kothamangalam; Sera Mathew, Mar Athanasius College of Engineering, Kothamangalam |
Keywords: |
| Multilevel Inverter (MLI), Phase Disposition Pulse Width Modulation, Total Harmonic Distortion (THD), Capacitor Voltage Balance, Nine Level Output Voltage |
Abstract |
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A single phase nine level inverter with a Phase Disposition (PD) multicarrier Pulse Width Modulated control scheme is presented. The harmonic content and switching stress is less in this topology. Also the self-balancing of capacitors is the main advantage of this control scheme. The capacitor potential divider circuit generate for voltages with equal magnitude and by using this the inverter generates nine output voltage levels (Vdc, 3Vdc/4, 2Vdc/4, Vdc/4, 0, -Vdc/4, -2Vdc/4, -3Vdc/4, -Vdc/4). The proposed inverter requires only few components. A single voltage source is the only requirement. Nine power electronic switches, three uncontrolled switches and four capacitors provide the efficient operation of the inverter. The requirement of multiple independent voltage sources is eliminated in this topology. |
Other Details |
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Paper ID: IJSRDV4I70363 Published in: Volume : 4, Issue : 7 Publication Date: 01/10/2016 Page(s): 493-498 |
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