An Improved Cascaded H-Bridge Multilevel Inverter Controlled by an Unbalanced Voltage Level Sigma-Delta Modulator

Jingsheng Liao; Mehdi Ferdowsi

doi:10.1109/VPPC.2008.4677614

An Improved Cascaded H-Bridge Multilevel Inverter Controlled by an Unbalanced Voltage Level Sigma-Delta Modulator

Jingsheng Liao
, Mehdi Ferdowsi

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Multilevel inverters have been proven to be viable solutions for high-power automotive motor drive applications due to their high volt-ampere ratings. Cascaded H-bridge inverters are a promising breed of multilevel inverters which generally require several independent dc sources. Replacement of all but one of the dc sources with capacitors in cascaded H-bridge multilevel inverters, which leads to single-dc-source per-phase cascaded inverters, has recently gained popularity. However, very few efforts have been made to address the challenging problem of voltage regulation in the replacing capacitors. In this paper, applicability of a real-time voltage control technique named unbalanced voltage level sigma-delta modulation technique to provide voltage regulation across the replacing capacitors is examined. In addition, a new voltage ratio for the H-bridge cells is introduced, which simplifies the control tasks. Analytical and simulation results prove the effectiveness of the proposed scheme.

Original language	American English
Journal	Proceedings of the IEEE Vehicle Power and Propulsion Conference (2008, Harbin, China)
DOIs	https://doi.org/10.1109/VPPC.2008.4677614
State	Published - Sep 1 2008

Keywords

Bridge Circuits
Capacitance
Capacitors
Cascaded H Bridges
Cascaded Inverters
Challenging Problems
Control Tasks
Control Techniques
DC Sources
Delta Modulation
Delta-Sigma Modulation
Delta-Sigma Modulator
Dielectric Devices
Electric Current Regulators
Electric Drives
Electric Equipment
Electric Inverters
Electric Potential
H-Bridge Multi-Level Inverter
High Powers
Interferometry
Invertors
Modulation
Modulators
Motor Drive Applications
Multilevel Inverters
Paper Capacitors
Power Capacitors
Power Spectrum
Propulsion
Sigma Deltas
Sigma-Delta Modulations
Simulation Results
Spectrum Analysis
Spectrum Analyzers
Unbalanced Voltages
Vehicles
Viable Solutions
Voltage Control
Voltage Ratios
Voltage Regulation
Voltage Regulators
Voltage Stabilizing Circuits

Disciplines

Electrical and Computer Engineering

Access to Document

10.1109/VPPC.2008.4677614License: Unspecified

An Improved Cascaded H-Bridge Multilevel Inverter Controlled by aFinal published version, 379 KBLicense: Unspecified

Cite this

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title = "An Improved Cascaded H-Bridge Multilevel Inverter Controlled by an Unbalanced Voltage Level Sigma-Delta Modulator",

abstract = " Multilevel inverters have been proven to be viable solutions for high-power automotive motor drive applications due to their high volt-ampere ratings. Cascaded H-bridge inverters are a promising breed of multilevel inverters which generally require several independent dc sources. Replacement of all but one of the dc sources with capacitors in cascaded H-bridge multilevel inverters, which leads to single-dc-source per-phase cascaded inverters, has recently gained popularity. However, very few efforts have been made to address the challenging problem of voltage regulation in the replacing capacitors. In this paper, applicability of a real-time voltage control technique named unbalanced voltage level sigma-delta modulation technique to provide voltage regulation across the replacing capacitors is examined. In addition, a new voltage ratio for the H-bridge cells is introduced, which simplifies the control tasks. Analytical and simulation results prove the effectiveness of the proposed scheme.",

keywords = "Bridge Circuits, Capacitance, Capacitors, Cascaded H Bridges, Cascaded Inverters, Challenging Problems, Control Tasks, Control Techniques, DC Sources, Delta Modulation, Delta-Sigma Modulation, Delta-Sigma Modulator, Dielectric Devices, Electric Current Regulators, Electric Drives, Electric Equipment, Electric Inverters, Electric Potential, H-Bridge Multi-Level Inverter, High Powers, Interferometry, Invertors, Modulation, Modulators, Motor Drive Applications, Multilevel Inverters, Paper Capacitors, Power Capacitors, Power Spectrum, Propulsion, Sigma Deltas, Sigma-Delta Modulations, Simulation Results, Spectrum Analysis, Spectrum Analyzers, Unbalanced Voltages, Vehicles, Viable Solutions, Voltage Control, Voltage Ratios, Voltage Regulation, Voltage Regulators, Voltage Stabilizing Circuits",

author = "Jingsheng Liao and Mehdi Ferdowsi",

year = "2008",

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doi = "10.1109/VPPC.2008.4677614",

language = "American English",

journal = "Proceedings of the IEEE Vehicle Power and Propulsion Conference (2008, Harbin, China)",

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T1 - An Improved Cascaded H-Bridge Multilevel Inverter Controlled by an Unbalanced Voltage Level Sigma-Delta Modulator

AU - Liao, Jingsheng

AU - Ferdowsi, Mehdi

PY - 2008/9/1

Y1 - 2008/9/1

N2 - Multilevel inverters have been proven to be viable solutions for high-power automotive motor drive applications due to their high volt-ampere ratings. Cascaded H-bridge inverters are a promising breed of multilevel inverters which generally require several independent dc sources. Replacement of all but one of the dc sources with capacitors in cascaded H-bridge multilevel inverters, which leads to single-dc-source per-phase cascaded inverters, has recently gained popularity. However, very few efforts have been made to address the challenging problem of voltage regulation in the replacing capacitors. In this paper, applicability of a real-time voltage control technique named unbalanced voltage level sigma-delta modulation technique to provide voltage regulation across the replacing capacitors is examined. In addition, a new voltage ratio for the H-bridge cells is introduced, which simplifies the control tasks. Analytical and simulation results prove the effectiveness of the proposed scheme.

AB - Multilevel inverters have been proven to be viable solutions for high-power automotive motor drive applications due to their high volt-ampere ratings. Cascaded H-bridge inverters are a promising breed of multilevel inverters which generally require several independent dc sources. Replacement of all but one of the dc sources with capacitors in cascaded H-bridge multilevel inverters, which leads to single-dc-source per-phase cascaded inverters, has recently gained popularity. However, very few efforts have been made to address the challenging problem of voltage regulation in the replacing capacitors. In this paper, applicability of a real-time voltage control technique named unbalanced voltage level sigma-delta modulation technique to provide voltage regulation across the replacing capacitors is examined. In addition, a new voltage ratio for the H-bridge cells is introduced, which simplifies the control tasks. Analytical and simulation results prove the effectiveness of the proposed scheme.

KW - Bridge Circuits

KW - Capacitance

KW - Capacitors

KW - Cascaded H Bridges

KW - Cascaded Inverters

KW - Challenging Problems

KW - Control Tasks

KW - Control Techniques

KW - DC Sources

KW - Delta Modulation

KW - Delta-Sigma Modulation

KW - Delta-Sigma Modulator

KW - Dielectric Devices

KW - Electric Current Regulators

KW - Electric Drives

KW - Electric Equipment

KW - Electric Inverters

KW - Electric Potential

KW - H-Bridge Multi-Level Inverter

KW - High Powers

KW - Interferometry

KW - Invertors

KW - Modulation

KW - Modulators

KW - Motor Drive Applications

KW - Multilevel Inverters

KW - Paper Capacitors

KW - Power Capacitors

KW - Power Spectrum

KW - Propulsion

KW - Sigma Deltas

KW - Sigma-Delta Modulations

KW - Simulation Results

KW - Spectrum Analysis

KW - Spectrum Analyzers

KW - Unbalanced Voltages

KW - Vehicles

KW - Viable Solutions

KW - Voltage Control

KW - Voltage Ratios

KW - Voltage Regulation

KW - Voltage Regulators

KW - Voltage Stabilizing Circuits

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DO - 10.1109/VPPC.2008.4677614

M3 - Article

JO - Proceedings of the IEEE Vehicle Power and Propulsion Conference (2008, Harbin, China)

JF - Proceedings of the IEEE Vehicle Power and Propulsion Conference (2008, Harbin, China)

ER -

An Improved Cascaded H-Bridge Multilevel Inverter Controlled by an Unbalanced Voltage Level Sigma-Delta Modulator

Abstract

Keywords

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