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Title: Fundamental Frequency Switching Control of Seven-Level Hybrid Cascaded H-bridge Multilevel Inverter

Abstract

This paper presents a cascaded H-bridge multilevel inverter that can be implemented using only a single dc power source and capacitors. Standard cascaded multilevel inverters require n dc sources for 2n + 1 levels. Without requiring transformers, the scheme proposed here allows the use of a single dc power source (e.g., a battery or a fuel cell stack) with the remaining n-1 dc sources being capacitors, which is referred to as hybrid cascaded H-bridge multilevel inverter (HCMLI) in this paper. It is shown that the inverter can simultaneously maintain the dc voltage level of the capacitors and choose a fundamental frequency switching pattern to produce a nearly sinusoidal output. HCMLI using only a single dc source for each phase is promising for high-power motor drive applications as it significantly decreases the number of required dc power supplies, provides high-quality output power due to its high number of output levels, and results in high conversion efficiency and low thermal stress as it uses a fundamental frequency switching scheme. This paper mainly discusses control of seven-level HCMLI with fundamental frequency switching control and how its modulation index range can be extended using triplen harmonic compensation.

Authors:
 [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Power Electronics and Electric Machinery Research Facility
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1018566
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Power Electronics
Additional Journal Information:
Journal Volume: 24; Journal Issue: 1-2; Journal ID: ISSN 0885--8993
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; CAPACITORS; EFFICIENCY; FUEL CELLS; HARMONICS; INVERTERS; MODULATION; MOTORS; POWER SUPPLIES; TRANSFORMERS

Citation Formats

Du, Zhong, Chiasson, John N, Ozpineci, Burak, and Tolbert, Leon M. Fundamental Frequency Switching Control of Seven-Level Hybrid Cascaded H-bridge Multilevel Inverter. United States: N. p., 2009. Web. doi:10.1109/TPEL.2008.2006678.
Du, Zhong, Chiasson, John N, Ozpineci, Burak, & Tolbert, Leon M. Fundamental Frequency Switching Control of Seven-Level Hybrid Cascaded H-bridge Multilevel Inverter. United States. https://doi.org/10.1109/TPEL.2008.2006678
Du, Zhong, Chiasson, John N, Ozpineci, Burak, and Tolbert, Leon M. 2009. "Fundamental Frequency Switching Control of Seven-Level Hybrid Cascaded H-bridge Multilevel Inverter". United States. https://doi.org/10.1109/TPEL.2008.2006678.
@article{osti_1018566,
title = {Fundamental Frequency Switching Control of Seven-Level Hybrid Cascaded H-bridge Multilevel Inverter},
author = {Du, Zhong and Chiasson, John N and Ozpineci, Burak and Tolbert, Leon M},
abstractNote = {This paper presents a cascaded H-bridge multilevel inverter that can be implemented using only a single dc power source and capacitors. Standard cascaded multilevel inverters require n dc sources for 2n + 1 levels. Without requiring transformers, the scheme proposed here allows the use of a single dc power source (e.g., a battery or a fuel cell stack) with the remaining n-1 dc sources being capacitors, which is referred to as hybrid cascaded H-bridge multilevel inverter (HCMLI) in this paper. It is shown that the inverter can simultaneously maintain the dc voltage level of the capacitors and choose a fundamental frequency switching pattern to produce a nearly sinusoidal output. HCMLI using only a single dc source for each phase is promising for high-power motor drive applications as it significantly decreases the number of required dc power supplies, provides high-quality output power due to its high number of output levels, and results in high conversion efficiency and low thermal stress as it uses a fundamental frequency switching scheme. This paper mainly discusses control of seven-level HCMLI with fundamental frequency switching control and how its modulation index range can be extended using triplen harmonic compensation.},
doi = {10.1109/TPEL.2008.2006678},
url = {https://www.osti.gov/biblio/1018566}, journal = {IEEE Transactions on Power Electronics},
issn = {0885--8993},
number = 1-2,
volume = 24,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2009},
month = {Thu Jan 01 00:00:00 EST 2009}
}