A Five-Level Inverter Scheme with Increased Linear Modulation Range

Majumder, MG and Rakesh, R and Imthias, M and Gopakumar, K and Umanand, L and Al-Haddad, K and Franquelo, LG (2019) A Five-Level Inverter Scheme with Increased Linear Modulation Range. In: IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 14-17 Oct. 2019, Lisbon, Portugal, Portugal, pp. 3301-3306.

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Abstract

In this paper, the method to extend linear modulation range till full base speed irrespective of the load power factor (p.f.) is presented using a 5-Level inverter scheme. Using this method, inverter can be operated linearly till peak phase fundamental voltage of 0.637Vdc (i.e. till full base speed) without exceeding machine phase voltage rating. The 5-level inverter is realized by a dual-fed inverter scheme for Open-End Induction Motor (OEIM) drive. A 2-Level inverter cascaded with a H-Bridge inverter acts as primary inverter and feeds the drive from one end whereas capacitor fed 2-Level inverter acts as secondary inverter and feeds the drive from another end. A single DC source is connected with primary 2-Level inverter. The ratio of the DC-link voltage to the primary H- Bridge inverter capacitor voltage is 4:1 and the DC-link to the secondary inverter capacitor voltage is maintained at 2:1 ratio for proper 5-Level inverter operation. Simulation and experimental results for inverter operation till full base speed are presented in this paper for OEIM and resistive load under steady state and dynamic conditions. © 2019 IEEE.

Item Type:	Conference Paper
Publication:	IECON Proceedings (Industrial Electronics Conference)
Publisher:	IEEE Computer Society
Additional Information:	cited By 0; Conference of 45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019 ; Conference Date: 14 October 2019 Through 17 October 2019; Conference Code:155980
Keywords:	Bridge circuits; Induction motors; Industrial electronics; Modulation, 2-level inverters; Capacitor voltages; Dynamic condition; Five level inverter; H-bridge inverters; Inverter operations; Linear modulations; Load power factor, Electric inverters
Department/Centre:	Division of Electrical Sciences > Electronic Systems Engineering (Formerly Centre for Electronic Design & Technology)
Date Deposited:	23 Sep 2020 11:24
Last Modified:	23 Sep 2020 11:24
URI:	http://eprints.iisc.ac.in/id/eprint/65457

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