Numerical Average-Value Modeling of Rotating Rectifiers in Brushless Excitation Systems

Yuqi Zhang; Aaron M. Cramer

doi:10.1109/TEC.2017.2706961

Numerical Average-Value Modeling of Rotating Rectifiers in Brushless Excitation Systems

Yuqi Zhang, Aaron M. Cramer

Electrical and Computer Engineering

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

10 Scopus citations

Abstract

Brushless excitation systems are widely used for synchronous machines. As a critical part of the system, rotating rectifiers have a significant impact on the system behavior. This paper presents a numerical average-value model (AVM) for rotating rectifiers in brushless excitation systems, where the essential numerical functions are extracted from the detailed simulations and vary depending on the loading conditions. Open-circuit voltages of the brushless exciter armature are used to calculate the dynamic impedance that represents the loading condition. The model is validated by comparison with an experimentally validated detailed model of the brushless excitation system in three distinct cases. It has been demonstrated that the proposed AVM can provide accurate simulations in both transient and steady states with fewer time steps and less runtime compared with detailed models of such systems and that the proposed AVM can be combined with AVM models of other rectifiers in the system to reduce the overall computational cost.

Original language	English
Article number	7932542
Pages (from-to)	1592-1601
Number of pages	10
Journal	IEEE Transactions on Energy Conversion
Volume	32
Issue number	4
DOIs	https://doi.org/10.1109/TEC.2017.2706961
State	Published - Dec 2017

Bibliographical note

Funding Information:
Manuscript received January 20, 2017; revised April 26, 2017; accepted May 8, 2017. Date of publication May 22, 2017; date of current version November 22, 2017. This work was supported by the Office of Naval Research (ONR) through the ONR Young Investigator Program N00014-15-1-2475. Paper no. TEC-00051-2017. (Corresponding author: Aaron M. Cramer.) The authors are with the University of Kentucky, Lexington, KY 40506 USA (e-mail: yuqi.zhang@uky.edu; aaron.cramer@uky.edu).

Publisher Copyright:
© 1986-2012 IEEE.

Keywords

Brushless machines
converters
generators
simulation

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1109/TEC.2017.2706961

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abstract = "Brushless excitation systems are widely used for synchronous machines. As a critical part of the system, rotating rectifiers have a significant impact on the system behavior. This paper presents a numerical average-value model (AVM) for rotating rectifiers in brushless excitation systems, where the essential numerical functions are extracted from the detailed simulations and vary depending on the loading conditions. Open-circuit voltages of the brushless exciter armature are used to calculate the dynamic impedance that represents the loading condition. The model is validated by comparison with an experimentally validated detailed model of the brushless excitation system in three distinct cases. It has been demonstrated that the proposed AVM can provide accurate simulations in both transient and steady states with fewer time steps and less runtime compared with detailed models of such systems and that the proposed AVM can be combined with AVM models of other rectifiers in the system to reduce the overall computational cost.",

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Numerical Average-Value Modeling of Rotating Rectifiers in Brushless Excitation Systems

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Keywords

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