A Method to Evaluate Cycloconverters Commutation Robustness Under Voltage and Frequency Variations in Mining Distribution Systems

G. Francisco Silva; T. Luis Morán; T. Miguel Torres; V. Christian Weishaupt

doi:10.1109/TIA.2017.2750115

A Method to Evaluate Cycloconverters Commutation Robustness Under Voltage and Frequency Variations in Mining Distribution Systems

G. Francisco Silva, T. Luis Morán^*, T. Miguel Torres, V. Christian Weishaupt

^*Corresponding author for this work

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

10 Scopus citations

Abstract

This paper analyzes the influence of frequency and voltage variation over the commutation of thyristors in high-power cycloconverters. The analysis demonstrates that frequency and voltage variations can cause commutation failures generating significant damages in cycloconverters. In addition, the paper proposes a method based on the energy required to commutate thyristors to determine the maximum frequency and voltage variations that will not affect commutation between thyristors, information that can be later used for the correct setting of protection relays. The analysis is complemented with simulated results using data obtained from high-power thyristors used in commercially available cycloconverters. Finally, a commutation failure in a 15 MW grinding mill cycloconverter drive is presented and analyzed.

Original language	English
Article number	8027070
Pages (from-to)	858-865
Number of pages	8
Journal	IEEE Transactions on Industry Applications
Volume	54
Issue number	1
DOIs	https://doi.org/10.1109/TIA.2017.2750115
State	Published - 1 Jan 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 IEEE.

Keywords

Cycloconverters
frequency and voltage variations
thyristor commutation

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10.1109/TIA.2017.2750115

Cite this

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title = "A Method to Evaluate Cycloconverters Commutation Robustness Under Voltage and Frequency Variations in Mining Distribution Systems",

abstract = "This paper analyzes the influence of frequency and voltage variation over the commutation of thyristors in high-power cycloconverters. The analysis demonstrates that frequency and voltage variations can cause commutation failures generating significant damages in cycloconverters. In addition, the paper proposes a method based on the energy required to commutate thyristors to determine the maximum frequency and voltage variations that will not affect commutation between thyristors, information that can be later used for the correct setting of protection relays. The analysis is complemented with simulated results using data obtained from high-power thyristors used in commercially available cycloconverters. Finally, a commutation failure in a 15 MW grinding mill cycloconverter drive is presented and analyzed.",

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AU - Christian Weishaupt, V.

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AB - This paper analyzes the influence of frequency and voltage variation over the commutation of thyristors in high-power cycloconverters. The analysis demonstrates that frequency and voltage variations can cause commutation failures generating significant damages in cycloconverters. In addition, the paper proposes a method based on the energy required to commutate thyristors to determine the maximum frequency and voltage variations that will not affect commutation between thyristors, information that can be later used for the correct setting of protection relays. The analysis is complemented with simulated results using data obtained from high-power thyristors used in commercially available cycloconverters. Finally, a commutation failure in a 15 MW grinding mill cycloconverter drive is presented and analyzed.

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A Method to Evaluate Cycloconverters Commutation Robustness Under Voltage and Frequency Variations in Mining Distribution Systems

Abstract

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Keywords

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