The Impact of Grid Unbalances on the Reliability of DC-link Capacitors in a Motor Drive

Huai Wang; Pooya Davari; Dinesh Kumar; Firuz Zare; Frede Blaabjerg

doi:10.1109/ECCE.2017.8096748

The Impact of Grid Unbalances on the Reliability of DC-link Capacitors in a Motor Drive

Huai Wang, Pooya Davari, Dinesh Kumar, Firuz Zare, Frede Blaabjerg

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

27 Citations (Scopus)

Abstract

DC-link capacitor is one of the reliability-critical components in motor drive applications, which contributes to a considerable cost, size and failure. Its reliability performance depends on both inherent physical strength and external loading. The grid unbalances could alter the electro-thermal stresses of key components in a motor drive. Therefore, this digest investigates the impact of grid voltage amplitude and phase unbalances on the lifetime of DC-link capacitors used in a standard three-phase motor drive. The theoretical stress models and experimental measurements of the capacitor voltages and ripple currents are presented. The relationship between the DC-link capacitor lifetime and the level of unbalances and loads are discussed based on a 7.5 kW motor drive system. The results serve as a guideline to size the DC-link capacitors to be robust enough at the presence of grid unbalance conditions.

Original language	English
Title of host publication	Proceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE)
Number of pages	6
Publisher	IEEE Press
Publication date	Oct 2017
Pages	4345-4350
ISBN (Electronic)	978-1-5090-2998-3
DOIs	https://doi.org/10.1109/ECCE.2017.8096748
Publication status	Published - Oct 2017
Event	2017 IEEE Energy Conversion Congress and Exposition (ECCE) - Cincinnati, Ohio, United States Duration: 1 Oct 2017 → 5 Oct 2017

Conference

Conference	2017 IEEE Energy Conversion Congress and Exposition (ECCE)
Country/Territory	United States
City	Cincinnati, Ohio
Period	01/10/2017 → 05/10/2017

Keywords

Motor drive
Capacitor
Reliability
Unbalance

Access to Document

10.1109/ECCE.2017.8096748

http://ieeexplore.ieee.org/document/8096748/

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REPEPS: REliable Power Electronic based Power System
Blaabjerg, F., Iannuzzo, F., Davari, P., Wang, H., Wang, X. & Yang, Y.
01/08/2017 → 01/12/2023
Project: Research
APETT: Advanced Power Electronic Technology and Tools
Blaabjerg, F., Munk-Nielsen, S., Iannuzzo, F., Wang, H., Uhrenfeldt, C., Beczkowski, S. M., Zhou, D., Choi, U., Jørgensen, A. B., Vernica, I., Sangwongwanich, A., Christensen, N., Ceccarelli, L., Nielsen, C. K., Bahman, A. S., Pedersen, K., Pedersen, K. B. & Kristensen, P. K.
Innovation Fund Denmark
01/01/2017 → 30/06/2021
Project: Research
Multi-Physics of High Power Density Power Electronic Systems
Davari, P. & Steffensen, B.
DFF-Individuelle postdocstipendier : DFF-1333-00034
01/03/2016 → 31/05/2018
Project: Research

Cite this

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title = "The Impact of Grid Unbalances on the Reliability of DC-link Capacitors in a Motor Drive",

abstract = "DC-link capacitor is one of the reliability-critical components in motor drive applications, which contributes to a considerable cost, size and failure. Its reliability performance depends on both inherent physical strength and external loading. The grid unbalances could alter the electro-thermal stresses of key components in a motor drive. Therefore, this digest investigates the impact of grid voltage amplitude and phase unbalances on the lifetime of DC-link capacitors used in a standard three-phase motor drive. The theoretical stress models and experimental measurements of the capacitor voltages and ripple currents are presented. The relationship between the DC-link capacitor lifetime and the level of unbalances and loads are discussed based on a 7.5 kW motor drive system. The results serve as a guideline to size the DC-link capacitors to be robust enough at the presence of grid unbalance conditions.",

keywords = "Motor drive, Capacitor, Reliability, Unbalance",

author = "Huai Wang and Pooya Davari and Dinesh Kumar and Firuz Zare and Frede Blaabjerg",

year = "2017",

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doi = "10.1109/ECCE.2017.8096748",

language = "English",

pages = "4345--4350",

booktitle = "Proceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE)",

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note = "2017 IEEE Energy Conversion Congress and Exposition (ECCE) ; Conference date: 01-10-2017 Through 05-10-2017",

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Wang, H , Davari, P, Kumar, D, Zare, F & Blaabjerg, F 2017, The Impact of Grid Unbalances on the Reliability of DC-link Capacitors in a Motor Drive. in Proceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE Press, pp. 4345-4350, 2017 IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati, Ohio, United States, 01/10/2017. https://doi.org/10.1109/ECCE.2017.8096748

The Impact of Grid Unbalances on the Reliability of DC-link Capacitors in a Motor Drive. / Wang, Huai ; Davari, Pooya; Kumar, Dinesh et al.
Proceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE Press, 2017. p. 4345-4350.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - The Impact of Grid Unbalances on the Reliability of DC-link Capacitors in a Motor Drive

AU - Wang, Huai

AU - Davari, Pooya

AU - Kumar, Dinesh

AU - Zare, Firuz

AU - Blaabjerg, Frede

PY - 2017/10

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N2 - DC-link capacitor is one of the reliability-critical components in motor drive applications, which contributes to a considerable cost, size and failure. Its reliability performance depends on both inherent physical strength and external loading. The grid unbalances could alter the electro-thermal stresses of key components in a motor drive. Therefore, this digest investigates the impact of grid voltage amplitude and phase unbalances on the lifetime of DC-link capacitors used in a standard three-phase motor drive. The theoretical stress models and experimental measurements of the capacitor voltages and ripple currents are presented. The relationship between the DC-link capacitor lifetime and the level of unbalances and loads are discussed based on a 7.5 kW motor drive system. The results serve as a guideline to size the DC-link capacitors to be robust enough at the presence of grid unbalance conditions.

AB - DC-link capacitor is one of the reliability-critical components in motor drive applications, which contributes to a considerable cost, size and failure. Its reliability performance depends on both inherent physical strength and external loading. The grid unbalances could alter the electro-thermal stresses of key components in a motor drive. Therefore, this digest investigates the impact of grid voltage amplitude and phase unbalances on the lifetime of DC-link capacitors used in a standard three-phase motor drive. The theoretical stress models and experimental measurements of the capacitor voltages and ripple currents are presented. The relationship between the DC-link capacitor lifetime and the level of unbalances and loads are discussed based on a 7.5 kW motor drive system. The results serve as a guideline to size the DC-link capacitors to be robust enough at the presence of grid unbalance conditions.

KW - Motor drive

KW - Capacitor

KW - Reliability

KW - Unbalance

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DO - 10.1109/ECCE.2017.8096748

M3 - Article in proceeding

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BT - Proceedings of 2017 IEEE Energy Conversion Congress and Exposition (ECCE)

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T2 - 2017 IEEE Energy Conversion Congress and Exposition (ECCE)

Y2 - 1 October 2017 through 5 October 2017

ER -

The Impact of Grid Unbalances on the Reliability of DC-link Capacitors in a Motor Drive

Abstract

Conference

Keywords

Access to Document

AUB Link

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Projects

REPEPS: REliable Power Electronic based Power System

APETT: Advanced Power Electronic Technology and Tools

Multi-Physics of High Power Density Power Electronic Systems

Cite this