A Proposed Five-level Neutral Point Clamped Inverter

Document Type : Original Article

Authors

1 Electrical department, Faculty of engineering, Menoufia University, Shebin Elkom, Egypt

2 electrical engineering,Faculty of engineering,menoufia university

3 Prof. of Power Electronics, Electrical Eng., Dept., Faculty of Eng., Menoufia University

4 Prof. of Control of machines, Electrical Engineering department, Faculty of Engineering, Menoufia university

Abstract

This paper presents a proposed five-level inverter based on conventional five-level Neutral Point Clamped (NPC) topology which is a type of Multilevel Inverters (MLIs). MLI is a great solution for high power application in addition to medium power, low power and renewable energy applications. The proposed topology reduces the number of input DC sources as compared with the conventional five level NPC topology. Also, this circuit reduces the conduction losses by reducing number of switches that turned on in each mode. The circuit operation analysis in each mode is illustrated. A proper modulation strategy based on Pulse Width Modulation PWM is applied on the proposed circuit. The simulation of the proposed circuit is carried out in MATLAB/SIMULINK environment. The results show a comparison between conventional five-level NPC and modified circuits which illustrate a good performance for the proposed one which make it suitable for many applications such as photovoltaic systems.

Keywords

ERJ. Engineering Research Journal
Volume 44, Issue 2
Volume 44 (2) issued on 10/4/2021 in 5 Parts: - PART 1: Electrical Engineering - PART 2: Mechanical Engineering - PART 3: Civil Engineering - PART 4: Architecture Engineering - PART 5: Basic Engineering Sciences
April 2021
Pages 135-140

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