Modified Multi-output Asymmetric Multi-level Inverter

• Published in: IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society pp. 1 - 6
• Main Authors: Mehulkumar, Bhabhor, Virat, Baria, Venkataramanaiah, J.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 13.10.2021
• Subjects: Asymmetric multilevel inverter; cascaded; Cost function; dual output converter; Medium voltage; Multilevel inverters; Pulse width modulation; Switches; Switching frequency; Voltage
• ISSN: 2577-1647
• DOI: 10.1109/IECON48115.2021.9589990

In this paper, a modified single-phase dual output converter is proposed. It is a binary asymmetric multilevel multi-output single-phase inverter (AMLMOI) with four-quadrant switches, which helps in blocking unwanted feedback current. The presented AMLMOI provides the independent operation of two connected AC loads. It retains benefits from symmetric multilevel dual output inverters, such as reducing switching stress and low THD of output voltage. Furthermore, it has fewer DC sources as the number of levels are moving high. The phase disposition carrier-based PWM technique is used for select switching states. The converter is controlled by the cost function, based on Hamming distance of the switching states, which also gave satisfied output at different frequencies of connected AC loads. The proposed AMLMOI is operated at independent load conditions such as amplitude, phases, frequency, and load values. Hence, the presented configuration is well suited for high power medium voltage applications. The performance of the proposed inverter topology is validated using MATLAB/SIMULINK software.