Sigma-Delta Modulation of Multi-Phase High Frequency Converters

Jonathan W. Kimball; Kyle Roger Eckler; Luke Dale Watson

doi:10.1109/APEC.2010.5433542

Sigma-Delta Modulation of Multi-Phase High Frequency Converters

Jonathan W. Kimball
, Kyle Roger Eckler
, Luke Dale Watson

Electrical and Computer Engineering

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

Abstract

A power conversion control architecture is proposed that merges advanced digital modulation techniques, high frequency resonant converters, and multi-phase converters. If a converter's switching frequency is high enough, the converter may be turned on and off quickly to modulate power flow. The proposed system is composed of several high frequency converters connected in parallel, only a few of which are active at a given time to regulate the output voltage. The number of active converters is determined through a sigma-delta modulation process. The specific converter enable signals are generated by a balancing algorithm that ensures approximately equal effective duty ratio and switching frequency for all phases. An output voltage regulator, here implemented as a PI loop, completes the system. The method has been simulated for an eight-phase closed-loop system. Experimental results are shown for a four-phase open-loop system with an external command that corresponds to the effective duty ratio of the power converters.

Original language	American English
Journal	Proceedings of the 25th Annual IEEE Applied Power Electronics Conference and Exposition (2010, Palm Springs, CA)
DOIs	https://doi.org/10.1109/APEC.2010.5433542
State	Published - Feb 1 2010

Keywords

Active Converters
Balancing Algorithms
Control Architecture
Delta Sigma Modulation
Digital Modulation Techniques
Duty Ratios
Electric Potential
Electric Power Supplies To Apparatus
Four-Phase
Frequency Converters
High Frequency Converter
High Frequency Resonant Converter
Modulation
Modulators
Multiphase Converters
Open Loop Systems
Output Voltages
Power Conversion
Power Electronics
Power Flows
Sigma Delta Modulation
Switching Frequency
Voltage Regulators

Disciplines

Electrical and Computer Engineering

Access to Document

10.1109/APEC.2010.5433542License: Unspecified

https://doi.org/10.1109/APEC.2010.5433542

Cite this

@article{b277836733ea44a4a9dda9cc4c57eeb1,

title = "Sigma-Delta Modulation of Multi-Phase High Frequency Converters",

abstract = " A power conversion control architecture is proposed that merges advanced digital modulation techniques, high frequency resonant converters, and multi-phase converters. If a converter's switching frequency is high enough, the converter may be turned on and off quickly to modulate power flow. The proposed system is composed of several high frequency converters connected in parallel, only a few of which are active at a given time to regulate the output voltage. The number of active converters is determined through a sigma-delta modulation process. The specific converter enable signals are generated by a balancing algorithm that ensures approximately equal effective duty ratio and switching frequency for all phases. An output voltage regulator, here implemented as a PI loop, completes the system. The method has been simulated for an eight-phase closed-loop system. Experimental results are shown for a four-phase open-loop system with an external command that corresponds to the effective duty ratio of the power converters.",

keywords = "Active Converters, Balancing Algorithms, Control Architecture, Delta Sigma Modulation, Digital Modulation Techniques, Duty Ratios, Electric Potential, Electric Power Supplies To Apparatus, Four-Phase, Frequency Converters, High Frequency Converter, High Frequency Resonant Converter, Modulation, Modulators, Multiphase Converters, Open Loop Systems, Output Voltages, Power Conversion, Power Electronics, Power Flows, Sigma Delta Modulation, Switching Frequency, Voltage Regulators",

author = "Kimball, \{Jonathan W.\} and Eckler, \{Kyle Roger\} and Watson, \{Luke Dale\}",

year = "2010",

month = feb,

day = "1",

doi = "10.1109/APEC.2010.5433542",

language = "American English",

journal = "Proceedings of the 25th Annual IEEE Applied Power Electronics Conference and Exposition (2010, Palm Springs, CA)",

}

TY - JOUR

T1 - Sigma-Delta Modulation of Multi-Phase High Frequency Converters

AU - Kimball, Jonathan W.

AU - Eckler, Kyle Roger

AU - Watson, Luke Dale

PY - 2010/2/1

Y1 - 2010/2/1

N2 - A power conversion control architecture is proposed that merges advanced digital modulation techniques, high frequency resonant converters, and multi-phase converters. If a converter's switching frequency is high enough, the converter may be turned on and off quickly to modulate power flow. The proposed system is composed of several high frequency converters connected in parallel, only a few of which are active at a given time to regulate the output voltage. The number of active converters is determined through a sigma-delta modulation process. The specific converter enable signals are generated by a balancing algorithm that ensures approximately equal effective duty ratio and switching frequency for all phases. An output voltage regulator, here implemented as a PI loop, completes the system. The method has been simulated for an eight-phase closed-loop system. Experimental results are shown for a four-phase open-loop system with an external command that corresponds to the effective duty ratio of the power converters.

AB - A power conversion control architecture is proposed that merges advanced digital modulation techniques, high frequency resonant converters, and multi-phase converters. If a converter's switching frequency is high enough, the converter may be turned on and off quickly to modulate power flow. The proposed system is composed of several high frequency converters connected in parallel, only a few of which are active at a given time to regulate the output voltage. The number of active converters is determined through a sigma-delta modulation process. The specific converter enable signals are generated by a balancing algorithm that ensures approximately equal effective duty ratio and switching frequency for all phases. An output voltage regulator, here implemented as a PI loop, completes the system. The method has been simulated for an eight-phase closed-loop system. Experimental results are shown for a four-phase open-loop system with an external command that corresponds to the effective duty ratio of the power converters.

KW - Active Converters

KW - Balancing Algorithms

KW - Control Architecture

KW - Delta Sigma Modulation

KW - Digital Modulation Techniques

KW - Duty Ratios

KW - Electric Potential

KW - Electric Power Supplies To Apparatus

KW - Four-Phase

KW - Frequency Converters

KW - High Frequency Converter

KW - High Frequency Resonant Converter

KW - Modulation

KW - Modulators

KW - Multiphase Converters

KW - Open Loop Systems

KW - Output Voltages

KW - Power Conversion

KW - Power Electronics

KW - Power Flows

KW - Sigma Delta Modulation

KW - Switching Frequency

KW - Voltage Regulators

UR - https://scholarsmine.mst.edu/ele_comeng_facwork/2975

UR - https://doi.org/10.1109/APEC.2010.5433542

U2 - 10.1109/APEC.2010.5433542

DO - 10.1109/APEC.2010.5433542

M3 - Article

JO - Proceedings of the 25th Annual IEEE Applied Power Electronics Conference and Exposition (2010, Palm Springs, CA)

JF - Proceedings of the 25th Annual IEEE Applied Power Electronics Conference and Exposition (2010, Palm Springs, CA)

ER -

Sigma-Delta Modulation of Multi-Phase High Frequency Converters

Abstract

Keywords

Disciplines

Access to Document

Other files and links

Fingerprint

Cite this