Excitation Limiters Design for a Micro-Alternator Buck Converter Based Static Excitation System

Mishra, T and Gurrala, G (2022) Excitation Limiters Design for a Micro-Alternator Buck Converter Based Static Excitation System. In: 2022 IEEE International Conference on Electrical, Computer, and Energy Technologies, ICECET 2022, 20 July - 22 July 2022, Prague.

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Abstract

This paper presents the design of excitation limiters such as an under-excitation limiter, over-excitation limiter and V/Hz limiter as per IEEE std 421.5 and implemented on a DC-DC buck converter-based static excitation system to protect the generator during abnormal conditions such as overloading, overheating and over-fluxing of the machine. A digital time constant regulator (TCR) is incorporated to modify the field's time constant of micro-alternator, to mimic the dynamics of large synchronous machines. The detailed tuning procedure of limiters and TCR is discussed to comply with IEEE STD 421.2 and IEEE STD 421.5. The performance of the developed excitation system with limiters is tested under various small and large disturbances.

Item Type:	Conference Paper
Publication:	International Conference on Electrical, Computer, and Energy Technologies, ICECET 2022
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	IEEE Standards; Synchronous generators, Abnormal conditions; Buck converters; DC-DC buck converter; Excitation limiter; Overexcitation limiter; Static excitation system; Time constant regulator; Time-constants; Under excitation limiters; V/hz limiter, DC-DC converters
Department/Centre:	Division of Electrical Sciences > Electrical Engineering
Date Deposited:	19 Oct 2022 09:43
Last Modified:	19 Oct 2022 09:43
URI:	https://eprints.iisc.ac.in/id/eprint/77455

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