DC-link capacitor reduction in low voltage and high power integrated modular motor drives

Andrew Hopkins; Bernhard Hopfensperger; Phil Mellor

doi:10.1109/ECCE.2019.8913213

DC-link capacitor reduction in low voltage and high power integrated modular motor drives

Andrew Hopkins^*, Bernhard Hopfensperger, Phil Mellor

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

8 Citations (Scopus)

Abstract

The development of 48V high power (>15 kW) automotive propulsion drives demands close integration of the power electronics and the electrical machine. Due to the large operating currents distributed multi-phase topologies are needed and physically separating the power converter from the e-machine would involve heavy cabling and costly connections. The volume and cost of the filter capacitor represents a major challenge in closely integrated high power integrated modular motor drives and techniques are needed to minimize this. The DC-link capacitor requires a large ripple current handling capability and cost, size and reliability limitations result in suitable candidate technologies being those with low volumetric energy densities. Use of interleaved multi three-phase machines are attractive due to the associated capacitor ripple current reduction. Discontinuous modulation schemes may also be employed as a technique for reducing the current ripple. In this paper techniques for capacitor ripple reduction are assessed through simulation and compared.

Original language	English
Title of host publication	2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	3208-3214
Number of pages	7
ISBN (Electronic)	9781728103952
DOIs	https://doi.org/10.1109/ECCE.2019.8913213
Publication status	Published - Sept 2019
Event	11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 - Baltimore, United States Duration: 29 Sept 2019 → 3 Oct 2019

Publication series

Name	2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

Conference

Conference	11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019
Country/Territory	United States
City	Baltimore
Period	29/09/19 → 3/10/19

Bibliographical note

Publisher Copyright:
© 2019 IEEE.

Keywords

Carrier phase shift
DC-link capacitor
Dual 3-phase inverter
Integrated modular motor drive
Interleaving
Ripple current reduction
Winding displacement

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Hopkins, A., Hopfensperger, B., & Mellor, P. (2019). DC-link capacitor reduction in low voltage and high power integrated modular motor drives. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019 (pp. 3208-3214). Article 8913213 (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ECCE.2019.8913213

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title = "DC-link capacitor reduction in low voltage and high power integrated modular motor drives",

abstract = "The development of 48V high power (>15 kW) automotive propulsion drives demands close integration of the power electronics and the electrical machine. Due to the large operating currents distributed multi-phase topologies are needed and physically separating the power converter from the e-machine would involve heavy cabling and costly connections. The volume and cost of the filter capacitor represents a major challenge in closely integrated high power integrated modular motor drives and techniques are needed to minimize this. The DC-link capacitor requires a large ripple current handling capability and cost, size and reliability limitations result in suitable candidate technologies being those with low volumetric energy densities. Use of interleaved multi three-phase machines are attractive due to the associated capacitor ripple current reduction. Discontinuous modulation schemes may also be employed as a technique for reducing the current ripple. In this paper techniques for capacitor ripple reduction are assessed through simulation and compared.",

keywords = "Carrier phase shift, DC-link capacitor, Dual 3-phase inverter, Integrated modular motor drive, Interleaving, Ripple current reduction, Winding displacement",

author = "Andrew Hopkins and Bernhard Hopfensperger and Phil Mellor",

note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019 ; Conference date: 29-09-2019 Through 03-10-2019",

year = "2019",

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language = "English",

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Hopkins, A, Hopfensperger, B & Mellor, P 2019, DC-link capacitor reduction in low voltage and high power integrated modular motor drives. in 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019., 8913213, 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019, Institute of Electrical and Electronics Engineers (IEEE), pp. 3208-3214, 11th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2019, Baltimore, United States, 29/09/19. https://doi.org/10.1109/ECCE.2019.8913213

DC-link capacitor reduction in low voltage and high power integrated modular motor drives. / Hopkins, Andrew; Hopfensperger, Bernhard; Mellor, Phil.
2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. Institute of Electrical and Electronics Engineers (IEEE), 2019. p. 3208-3214 8913213 (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019).

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

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AU - Hopkins, Andrew

AU - Hopfensperger, Bernhard

AU - Mellor, Phil

PY - 2019/9

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N2 - The development of 48V high power (>15 kW) automotive propulsion drives demands close integration of the power electronics and the electrical machine. Due to the large operating currents distributed multi-phase topologies are needed and physically separating the power converter from the e-machine would involve heavy cabling and costly connections. The volume and cost of the filter capacitor represents a major challenge in closely integrated high power integrated modular motor drives and techniques are needed to minimize this. The DC-link capacitor requires a large ripple current handling capability and cost, size and reliability limitations result in suitable candidate technologies being those with low volumetric energy densities. Use of interleaved multi three-phase machines are attractive due to the associated capacitor ripple current reduction. Discontinuous modulation schemes may also be employed as a technique for reducing the current ripple. In this paper techniques for capacitor ripple reduction are assessed through simulation and compared.

AB - The development of 48V high power (>15 kW) automotive propulsion drives demands close integration of the power electronics and the electrical machine. Due to the large operating currents distributed multi-phase topologies are needed and physically separating the power converter from the e-machine would involve heavy cabling and costly connections. The volume and cost of the filter capacitor represents a major challenge in closely integrated high power integrated modular motor drives and techniques are needed to minimize this. The DC-link capacitor requires a large ripple current handling capability and cost, size and reliability limitations result in suitable candidate technologies being those with low volumetric energy densities. Use of interleaved multi three-phase machines are attractive due to the associated capacitor ripple current reduction. Discontinuous modulation schemes may also be employed as a technique for reducing the current ripple. In this paper techniques for capacitor ripple reduction are assessed through simulation and compared.

KW - Carrier phase shift

KW - DC-link capacitor

KW - Dual 3-phase inverter

KW - Integrated modular motor drive

KW - Interleaving

KW - Ripple current reduction

KW - Winding displacement

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BT - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019

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ER -

Hopkins A, Hopfensperger B, Mellor P. DC-link capacitor reduction in low voltage and high power integrated modular motor drives. In 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019. Institute of Electrical and Electronics Engineers (IEEE). 2019. p. 3208-3214. 8913213. (2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019). doi: 10.1109/ECCE.2019.8913213

DC-link capacitor reduction in low voltage and high power integrated modular motor drives

Abstract

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Keywords

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