Simulation of 3-Phase 17-Level Inverter Using Two Cascaded Square Wave Bridge

Abdul Basit, Sheharyar Khan, Abdul Wahab, Kamil Jalal, Waseem Gohar and Kashif Hussain
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Abdul Basit: School of Electrical Engineering, Universityof science and Technology Bannu, KPK, Pakistan
Sheharyar Khan: School of Software, Northwestern Polytechnical University, Xian, China
Abdul Wahab: Shool of Automation, Northwestern Polytechnical University, Xian, China
Kamil Jalal: School of Electrical Engineering, Southeast University, Nanjing, China
Waseem Gohar: School of Automation Science and Engineering. South China University of Technology, Guangdong, China
Kashif Hussain: School of Information science and technology, Dalian MaritimeUniversity, Dalian, China

Technium, 2021, vol. 3, issue 2, 92-108

Abstract: Nowadays, electronic devices are very sensible with harmonics. The need for a harmonic free and large-grade power supply is also enhanced to meet the industry's requirements. This paper presents simulation of 3-phase 17-level cascaded h-bridge inverter by using two cascaded square wave bridge. Inverters are mainly divided as single or multi-level. The multi-level fundamental switching technique is used to control the power required for electronic switches. We have presented the methodology where switching angles are calculated so that the desired fundamental sinusoidal voltage is generated from the dc sources; however, at the same time, specific high order harmonics are removed. Comparative study of different types of sinusoidal pulse width modulation (SPWM) schemes such as phase disposition (PD), phase opposition disposition (POD) and alternative phase opposition disposition (APOD) with different modulation index (Ma) are proposed to decrease total harmonic distortion (THD) up to 5.65%. MATLAB Simulink results are included to demonstrate the effectiveness of the proposed multi-level inverter.

Date: 2021
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