NDLI: Single-phase multilevel inverter topologies with self-voltage balancing capabilities

Content Provider	IET Digital Library
Author	Gautam, Shivam Prakash Kumar, Lalit Gupta, Shubhrata
Abstract	In this study, two new structures of single-phase hybrid multilevel inverter are proposed for both symmetrical and asymmetrical configurations that can be employed in drives and control of electrical machines and connection of renewable energy sources. The proposed configuration uses a less number of semiconductor devices and DC sources as compared with conventional and newly developed topologies which lead to a reduction in cost and installation area. The proposed topology poses a vital advantage of self-voltage balancing of its capacitor voltage regardless of load type, load dynamics and modulation index. Also, the proposed topology is expanded in a cascaded fashion which reduces the complexity and improves the performance significantly. A wide range of comparison is done with conventional and newly developed topologies to show the superior performance of proposed topologies regarding a total number of switches and DC sources. The multi-carrier pulse-width modulation strategy is adopted for generating switching pulses for respective switches. A laboratory prototype is developed for testing the performance of the proposed topology for 9-level and 17-level inverters.
Starting Page	844
Ending Page	855
Page Count	12
ISSN	17554535
Volume Number	11
e-ISSN	17554543
Issue Number	Issue 5, May (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/11/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2017.0401
Journal	IET Power Electronics
Publisher Date	2018-01-02
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	17-level Inverter 9-level Inverter Capacitor Capacitor Voltage Cost Reduction DC Source Electrical Machine Control Load Dynamics Multicarrier Pulsewidth Modulation Strategy Power Electronics Power Supply PWM Invertors Relay And Switches Renewable Energy Source Self-voltage Balancing Capability Semiconductor Device Single-phase Multilevel Inverter Topology Supervisory Circuit Switched Mode Converter Switching Converter Switching Pulse Generation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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