Wide range modulation indexes featuring carrier-based PWM stepped waveform for half-bridge modular multilevel converters

Tohtayong, Majdee and Khan, Sheroz and Yaacob, Mashkuri and Yusoff, Siti Hajar and Midi, Nur Shahida and Ahmed, Musse Mohamud (2018) Wide range modulation indexes featuring carrier-based PWM stepped waveform for half-bridge modular multilevel converters. IIUM Engineering Journal, 19 (2). pp. 1-231. ISSN 1511-788X E-ISSN 2289-7860

	PDF - Published Version Restricted to Registered users only Download (1MB) | Request a copy
Preview	PDF Download (459kB) | Preview
	PDF (WOS) - Supplemental Material Restricted to Registered users only Download (950kB) | Request a copy

Abstract

This paper presents simulation results of the influence of wide range modulation index values ( a m ) in carrier-based PWM strategy for application in generating the stepped waveform. The waveform is tested for application in single-phase half-bridge modular multilevel converters (MMCs) topology. The results presented in this paper include a variation of the fundamental component (50 Hz) in the voltage output. It also studies total harmonic distortion of the output voltage (THDv) and the output current (THDi) when the modulation index is changed over the linear-modulation region, 0 < a m < 1. It also explores the effect of a modulation index greater than 1. Moreover, different output voltage shapes, as a consequence of varied a m on MMCs, are also illustrated for showing the effect of varying the value of a m on sub-module of MMC's. *********************************************************** Kajian ini berkenaan tentang pengaruh simulasi terhadap pelbagai nilai indeks ( ) berasaskan strategi PWM bagi menghasilkan bentuk gelombang bertingkat. Bentuk gelombang ini diuji untuk aplikasi topologi MMCs. Keputusan menunjukkan variasi pada komponen asas (50Hz) pada voltan akhir. Keputusan menunjukkan jumlah penyelarasan harmonik voltan akhir (THDv) dan arus (THDv) apabila indeks modulasi telah ditukar pada had modulasi linear, 0 < < 1. Ia juga membincangkan tentang kesan indeks modulasi lebih daripada 1. Selain itu, bentuk voltan akhir yang berbeza mengikut perubahan nilai pada MMCs juga dilampirkan bagi menunjukkan kesan perbezaan nilai pada sub-modul MMCs.

Item Type:	Article (Journal)
Additional Information:	3930/68217
Uncontrolled Keywords:	PWM; converter; stepped waveform; MMC; THD,
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Professor Mashkuri Yaacob
Date Deposited:	04 Dec 2018 11:06
Last Modified:	27 Jan 2019 15:24
URI:	http://irep.iium.edu.my/id/eprint/68217

Actions (login required)

View Item