CAPACITOR VOLTAGE BALANCING IN SINGLEPHASE SEVEN-LEVEL PWM INVERTER
Multilevel inverter has emerged recently as a very important altrernative in the area of high voltage and high power applications. Amultilevel inverter can synthesize stepped output voltages similar to sinisoidal wave. The main limitations of conventional topologies are high THD, large number of com...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Yeshwantrao Chavan College of Engineering, India
2017-07-01
|
| Series: | Journal of Research in Engineering and Applied Sciences |
| Subjects: | |
| Online Access: | http://www.mgijournal.com/Data/Issues_AdminPdf/91/6-Volume%202%20Issue%202%20%20April%202017.pdf |
| Summary: | Multilevel inverter has emerged recently as a very important altrernative in the area of high voltage and high power applications. Amultilevel inverter can synthesize stepped output voltages similar to sinisoidal wave. The main limitations of conventional topologies are high THD, large number of components, complex PWM control and voltage balancing problems. So to overcome these limitations, a single-phase seven-level PWM inverter with less number of carrier signals and components is introduced. It consist of a single dc voltage source with a series of capacitors, diodes, switches and an H-bridge cell. Simulation of proposed single-phase seven-level PWM inverter is done in MATLAB simulink software and voltage balancing issue in series connected capacitors is eliminated using modified PWM scheme. |
|---|---|
| ISSN: | 2456-6403 2456-6403 |