NDLI: Tri-carrier sinusoidal pulse-width modulation without dead time effects for converters

Content Provider	IET Digital Library
Author	Song, Chonghui Diao, Naizhe Xue, Zhiwei Sun, Xianrui Guan, Jianning
Abstract	This study presents a tri-carrier sinusoidal pulse-width modulation (SPWM) to eliminate the dead time effects (DTEs) (SPWM without DTE) in principle. Compared with other existing methods, this tri-carrier modulation method directly modified the modulation strategy to remove the DTE. It can reduce current harmonics and suppress the current ripple on the AC side of converters. This method is illustrated by taking the two-level inverter as an example, but it can be directly extended to the case where SPWM can be applied to, such as multi-level inverters and multi-level rectifiers. By analysing the equivalent circuit in the classical SPWM with the dead time (SPWM with DT) submode by submode, a novel SPWM strategy is proposed. It uses triple carriers to modulate the modulating wave. According to the current direction after filtering, driving signals are decided via some simple logic operations. The simulation and experimental results prove the effectiveness of this modulation strategy. It also improves the performance of the induction motor in the illustrated example.
Starting Page	1941
Ending Page	1951
Page Count	11
ISSN	17554535
Volume Number	8
e-ISSN	17554543
Issue Number	Issue 10, Oct (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/8/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2014.0509
Journal	IET Power Electronics
Publisher Date	2015-08-25
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asynchronous Machine Converter Current Harmonics Reduction Current Ripple Suppression Dead Time Effect DTE Equivalent Circuit Induction Motor Induction Motors Logic Operation Multilevel Inverter Multilevel Rectifier Power Electronics Power Supply PWM Invertors PWM Power Converter PWM Rectifier SPWM Supervisory Circuit Tricarrier Sinusoidal Pulse-width Modulation Two-level Inverter
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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