NDLI: Reference Disposition Modulation Method for non-ideal Dual Z-Source Neutral-Point-Clamped Inverter

Content Provider	IET Digital Library
Author	Roomi, Muhammad M. Maswood, Ali I. Tafti, Hossein Dehghani Raj, Pinkymol Harikrishna
Abstract	A single stage Z-source Neutral-Point-Clamped (NPC) inverter for buck-boost conversion is considered as a better alternative for the two-staged energy conversion in traditional inverters. The Dual Z-Source Network (DZSN) uses two distinct X-shaped impedance networks to connect two individual dc sources to the inverter circuit. The output voltage boosting can be achieved by selectively shooting-through the power sources in the dual networks. This study proposes a novel modulation method for integrating the shoot-through state to the traditional inverter switching. The performance of the proposed modulation method for DZSN is examined utilising attributes which include, voltage boosting, switching losses, efficiency, etc. In addition, this study also deals with non-ideal DZSN, where the circuit resistance and their respective voltage drops are considered. The presented modulation method uses a single carrier signal which is compared with two sets of sinusoidal reference signals to establish the switching. The theoretical findings of the proposed modulation method are verified using Matlab/Simulink and PSIM software. Moreover, an experimental NPC prototype was built and the results for the different values of modulation index are presented, which validate the applicability of proposed modulation method.
Starting Page	222
Ending Page	231
Page Count	10
ISSN	17554535
Volume Number	10
e-ISSN	17554543
Issue Number	Issue 2, Feb (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/10/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2016.0124
Journal	IET Power Electronics
Publisher Date	2017-02-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Buck-boost Conversion Circuit Resistance Inverter Switching Invertors MATLAB Simulink Environment Modulation Modulation Index Modulation Method Nonideal Dual-Z-source Neutral-point-clamped Inverter Nonideal DZSN Output Voltage Boosting PSIM Software Shooting-through Shoot-through State Single Stage Z-source NPC Inverter Sinusoidal Reference Signal Switching Loss Two-staged Energy Conversion X-shaped Impedance Network
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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