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Control of Cascaded H-Bridge Multilevel Inverter Based on Optimum Regulation of Switching Angles, and the FPGA Implementation

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  • Hatef Firouzkouhi

    (University of Nevada, USA.)

Abstract

A new concept in control of cascaded H-Bridge multi-level inverters is proposed in this paper. According to this concept, switching angles are considered to be independent from the fundamental voltage. A polynomial term is presented to show the relation between switching angles and DC voltages. Based on this concept, Total Harmonic Distortion (THD) calculations are updated and proved to be independent from the fundamental voltage. Thus, once calculated for minimum THD, the switching pattern can be used for any required level of output voltage. To examine the effectiveness of the proposed method, it is applied in control of an eleven level inverter. The simulation results are demonstrated and verified through experiments with a setup controlled by Xilinx SPARTAN3 family FPGA (XC3S400-PQG208).

Suggested Citation

  • Hatef Firouzkouhi, 2019. "Control of Cascaded H-Bridge Multilevel Inverter Based on Optimum Regulation of Switching Angles, and the FPGA Implementation," European Journal of Electrical Engineering and Computer Science, European Open Science, vol. 3(1), January.
    • Handle: RePEc:epw:ejece0:v:3:y:2019:i:1:id:19058
    DOI: 10.24018/ejece.2019.3.1.58
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