High -Frequency AC Power Distribution For 25- Level Multilevel Inverter Using Switched - Capacitor

Authors

  • Mrs. S. Narmadha  Electrical & Electronics Engineering, Sree Venkateswara College of Engineering-Nellore, Andhra Pradesh, India
  • Mr. SD. Liyakhath   Electrical & Electronics Engineering, Sree Venkateswara College of Engineering-Nellore, Andhra Pradesh, India
  • P. Keerthi Reddy  Electrical & Electronics Engineering, Sree Venkateswara College of Engineering-Nellore, Andhra Pradesh, India
  • K. Keerthi  Electrical & Electronics Engineering, Sree Venkateswara College of Engineering-Nellore, Andhra Pradesh, India
  • G. Murali  Electrical & Electronics Engineering, Sree Venkateswara College of Engineering-Nellore, Andhra Pradesh, India
  • CH. Vasavya  Electrical & Electronics Engineering, Sree Venkateswara College of Engineering-Nellore, Andhra Pradesh, India

Keywords:

Cascaded H-Bridge, high-frequency ac (HFAC), multilevel inverter, switched capacitor (SC), symmetrical phase shift modulation (PSM), Total Harmonic Distortion (THD), Harmonics.

Abstract

High frequency transmission distribution has more advantages than low or, medium frequency in various kind of power system applications. In High frequency ac (HFAC) power distribution system, High frequency inverter serves as a source side. But, it is complex to obtain a high-frequency inverter with both simple circuit topologies and straight forward modulation strategy . So , in this paper we are proposed a novel switched -capacitor-based cascaded, which is constructed by a multilevel inverter, which is constructed by a H-Bridge backend and switched-capacitor frontend. By the conversion of series and parallel connections, the switched capacitor frontend increases the number of voltage levels. The output harmonics and the component counter can be significantly reduced by the increasing number of voltage levels. A symmetrical triangular waveform modulation is proposed with a simple analog implementation and low modulation frequency comparing with traditional multicarrier modulation. The circuit topology, symmetrical modulation, operation cycles, Fourier analysis, parameter determination, and topology enhancement are examined. An experimental prototype with a rated output frequency of 25 kHz is implemented to compare with simulation results. The experimental results agreed very well with the simulation that confirms the feasibility of proposed multilevel inverter.

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International Journal of Scientific Research in Science and Technology

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Published

2022-06-30

Issue

Volume 9, Issue 3, May-June-2022

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Research Articles

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[1]
Mrs. S. Narmadha, Mr. SD. Liyakhath ,P. Keerthi Reddy, K. Keerthi, G. Murali, CH. Vasavya "High -Frequency AC Power Distribution For 25- Level Multilevel Inverter Using Switched - Capacitor" International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011,Volume 9, Issue 3, pp.707-725, May-June-2022.