Phase Reconfiguring Technique for Enhancing the Modulation Index of Multilevel Inverter Fed Nine-Phase im Drive
Author | Bhimireddy, Prathap Reddy |
Author | Keerthipati, Sivakumar |
Author | Iqbal, Atif |
Available date | 2022-03-06T05:21:55Z |
Publication Date | 2021 |
Publication Name | IEEE Transactions on Industrial Electronics |
Resource | Scopus |
ISSN | 1557-9948 |
Abstract | In this article, a multilevel inverter (MLI) scheme is proposed for four-pole (4-pole), nine-phase (9-phase) induction motor (IM) drives with improved dc bus utilization as well as reduced device count. The proposed MLI is realized with nine three-switch inverter legs (3-SIL) and a single dc source. In the proposed MLI, each 3-SIL is utilized for exciting the two identical voltage profile coils/phase of the four-pole (4-pole) stator winding, which means each leg has to be modulated with two references. These two independent references/leg will limit the modulation index (M.I) of 3-SIL-based proposed MLI. This lower M.I will result in a requirement of the higher magnitude of dc-link voltage to achieve the rated load voltage requirement. In this article, an effective phase reconfiguring concept is proposed for reducing the dc-link voltage requirement of the proposed MLI. In addition, all the possibilities of phase reconfiguring details for proposed MLI-fed 9-phase IM drive are also presented. A three-phase carrier-based space vector pulsewidth modulation is implemented for improving the linear modulation range of proposed MLI configuration further. In contrast with existing 9-phase three-level inverters, like NPC and FC, the proposed MLI configuration requires only one dc link (with half of the magnitude) and lesser number of semiconductor devices. The proposed MLI-fed, 5 hp, 9-phase, 4-pole IM drive is validated by using Ansys Maxwell FEM simulation and experimental prototype for entire modulation range. |
Sponsor | 10.13039/501100004252-Qatar University (Grant Number: QUHI-CENG-19/20-2) |
Language | en |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Subject | Multilevel inverters (MLIs) nine-phase induction motor (IM) drives open-end winding three-switch inverter legs |
Type | Article |
Pagination | 2898-2906 |
Issue Number | 4 |
Volume Number | 68 |
Files in this item
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |
This item appears in the following Collection(s)
-
Electrical Engineering [2544 items ]