A novel prototype design for a transformer for high voltage, high frequency, high power use

Author

Fothergill, John C. ; Devine, Philip W. ; Lefley, Paul W.

Author_Institution

Electr. Power Eng. Res. Group, Leicester Univ., UK

Volume

16

Issue

1

fYear

2001

fDate

1/1/2001 12:00:00 AM

Firstpage

89

Lastpage

98

Abstract

A prototype transformer has been designed and built which is novel in its combination of high voltage (50 kV), high frequency (20 kHz) and high power (25 kVA) specifications. The design technique utilized a spreadsheet approach which facilitated an iterative design procedure. The transformer used a ferrite core, nylon insulated secondary bobbins and pressurized sulfur hexafluoride encapsulation. It was designed as part of a high-voltage switched-mode power supply for driving electrostatic precipitators. The transformer was field tested at a large coal-fired power station and was found to have an efficiency of better than 98%

Keywords

electrostatic precipitators; power transformers; steam power stations; switched mode power supplies; transformer cores; 20 kHz; 25 kVA; 50 kV; AC-DC conversion; EHV transformers; HVDC insulation; coal-fired power station; efficiency; electrostatic precipitators; ferrite core; high frequency; high power; high voltage; high-voltage switched-mode power supply; iterative design procedure; nylon insulated secondary bobbins; pressurized sulfur hexafluoride encapsulation; spreadsheet; transformer; Electrostatic precipitators; Encapsulation; Ferrites; Frequency; Iterative methods; Power transformer insulation; Prototypes; Sulfur hexafluoride; Switched-mode power supply; Transformer cores;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.905601

Filename

905601