NDLI: Modified single-carrier multilevel sinusoidal pulse width modulation for asymmetrical insulated gate bipolar transistor-clamped grid-connected inverter

Content Provider	IET Digital Library
Author	Wu, Fengjiang Duan, Jiandong Feng, Fan
Abstract	Conventional sinusoidal pulse width modulation (SPWM) for single-phase asymmetrical seven-level insulated gate bipolar transistor (IGBT)-clamped grid-connected inverter (IC-GCI) needs an additional logic operation circuit and a dead zone generation circuit, which raises cost and complicates the implementation. In addition, both added circuitries decrease the reliability. In this study, a modified single-carrier multilevel SPWM (MSCM-SPWM) scheme suitable for IC-GCI is proposed. By setting one carrier, three digital signals to identify voltage zones and six equivalent modulation waves, the control signals of the switches in IC-GCI can be generated with only one digital signal processor controller and simple logic operation. It makes the implementation of the multilevel GCI easier. The detailed spectral character of the MSCM-SPWM is originally derived based on double-Fourier integral theory and then compared with the conventional scheme. It proves that they own the similar spectral character. Detailed simulation and experimental results verify the accuracy and feasibility of the MSCM-SPWM and the single-phase IC-GCI.
Starting Page	1531
Ending Page	1541
Page Count	11
ISSN	17554535
Volume Number	8
e-ISSN	17554543
Issue Number	Issue 8, Aug (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/8/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2014.0519
Journal	IET Power Electronics
Publisher Date	2015-04-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Asymmetrical Insulated Gate Bipolar Transistor Control of Electric Power System Control Signal Dead Zone Generation Circuit Digital Signal Processing Chips Digital Signal Processor Controller Double-Fourier Integral Theory Equivalent Modulation Wave Fourier Transforms IGBT-clamped Grid-connected Inverter Insulated Gate Bipolar Transistors Integral Transforms Logic Operation Circuit Modified Single-carrier Multilevel Sinusoidal Pulse Width Modulation Scheme MSCM-SPWM Scheme Multilevel GCI Power Electronics Power Grid Power Supply Power Transistors PWM Invertors Single-phase IC-GCI Supervisory Circuit Switching Converter Transistor Circuit Voltage Zones
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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