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FPGA Controlled Simplified H-Bridge Multilevel Inverter

P. Suresh 1, R. Kavin 2, B. Jayamanikandan 2, and S. Anbumani 3
1. Tamil Nadu Electricity Board, Vellore, Chennai, India
2. Dept. of EEE, Excel College of Engineering and Technology, Tamilnadu, India
3. Dept. of ECE, Excel Engineering College, Tamilnadu, India
Abstract—the multilevel inverter is recently applied in many industrial applications such as ac power supplies, static var compensators, drive system, etc. One of the significant advantages of multilevel configurations is the harmonic reduction in the output waveform without increasing switching frequency or decreasing the inverter power output. The output voltage waveform of multilevel inverter is composed of the number of levels of voltages, typically obtained from capacitor voltage sources. The so-called multivel inverter starts from three levels. As the number of level reach infinity, the output THD approaches zero. This work reports a multilevel inverter using an H-Bridge output stage with a bidirectional auxiliary switch. This Simplified H-bridge multilevel inverter produces a significant reduction of power devices and capacitor required to implement a multilevel output.
Index Terms—bidirectional auxiliary switches, field programmable gate array, h-bridge, multilevel inverter

Cite: P. Suresh, R. Kavin, B. Jayamanikandan, and S. Anbumani, "FPGA Controlled Simplified H-Bridge Multilevel Inverter," International Journal of Electronics and Electrical Engineering, Vol. 3, No. 5, pp. 372-376, October 2015. doi: 10.12720/ijeee.3.5.372-376
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