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2021 | OriginalPaper | Chapter

Cascaded Operation of Hybrid Multilevel Inverter with Optimum Switching Angle Control for Power Quality Enhancement

Authors : Hejeebu Prasad, R. Kameswara Rao, S. Kranthi Kumar

Published in: Microelectronics, Electromagnetics and Telecommunications

Publisher: Springer Singapore

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Abstract

Hybrid multilevel inverters (MLI) are popular for high-voltage and high-power applications with a reduced number of devices, for the purpose of cost optimization, ease of design, control, and maintenance. The minimum total harmonic distortion (THD) levels indicate power quality improvement to the maximum level. THD can be minimized by optimum switching angle control. In this paper, two 19-level hybrid multilevel inverters are cascaded to produce output voltage of 37 levels with optimum switching angle control for enhancing the power quality by reducing the THD. The system is simulated in MATLAB/Simulink. The THD of simulated output of is compared with the calculated values.

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Though the model is simulated for 1100 V peak output voltage, the THD depends on the shape and pattern of the output voltage. The voltage should be close to the sinusoidal waveform. Low THD indicates good power quality and closeness to sinusoidal wave shape.

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Jammala VR, Yellasiri S (2018) Development of new hybrid multilevel inverter using modified carrier SPWM switching strategy. IEEE Trans Power Electron 33(10):8192–8197

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Title: Cascaded Operation of Hybrid Multilevel Inverter with Optimum Switching Angle Control for Power Quality Enhancement
Authors: Hejeebu Prasad
R. Kameswara Rao
S. Kranthi Kumar
Publisher: Springer Singapore
Book: Microelectronics, Electromagnetics and Telecommunications
Print ISBN: 978-981-15-3827-8

Electronic ISBN: 978-981-15-3828-5

Copyright Year: 2021
DOI: https://doi.org/10.1007/978-981-15-3828-5_3