Development of Ultra-Low-Noise Transformer Technology

Autor:	Scott Thomas, Jan Anger, Donald Chu, Ramsis S. Girgis, Mats S. Bernesjo, Harold R Moore
Rok vydání:	2011
Předmět:	Engineering Noise measurement business.industry Electrical engineering Energy Engineering and Power Technology Technology development Frequency spectrum law.invention Low noise Vibration law Power electronics Electrical and Electronic Engineering Noise level Transformer business
Zdroj:	IEEE Transactions on Power Delivery. 26:228-234
ISSN:	1937-4208 0885-8977
DOI:	10.1109/tpwrd.2010.2070812
Popis:	Strict limits of the revised noise ordinance of New York City require power transformers to have ultra-low levels at each of the frequencies of transformer noise at full load and overexcitation. This paper describes the development of the technology that allowed successful design and production of ultra-low-noise power transformers recently delivered to Consolidated Edison of New York City. The paper presents results achieved by this development effort in the areas of accurate calculation of core resonance frequencies, frequency spectrum of core noise, and load noise. It also presents other aspects of the technology development, such as de-coupling of active parts vibrations from the tank, proper design of tank-plate fields and tank bracing, proper transformer mounting techniques, and accurate measurement of low noise levels in the factory. Finally, this paper presents the difference in design of the generations of these transformers produced at different stages of this development effort.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::33c7d98580f8a73ce8824099b7a54154 https://doi.org/10.1109/tpwrd.2010.2070812 Zobrazit plný text záznamu