论文信息 - A novel prototype design for a transformer for high voltage, high frequency, high power use

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

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%.

P. W. Lefley | John C. Fothergill | P. W. Devine

[1] M.A. Perez,et al. A new topology for high voltage, high frequency transformers , 1995, Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95.

[2] Gian Carlo Montanari,et al. The role of trapped space charges in the electrical aging of insulating materials , 1997 .

[3] Mutsuo Nakaoka,et al. Feasible characteristic evaluations of resonant PWM inverter-linked DC-DC power converter using high-voltage transformer parasitic circuit components , 1996 .

[4] John C. Fothergill,et al. Space charge in solid dielectrics , 1998 .

[5] Simon M. Rowland,et al. Effects of dry-band arc current on ageing of self-supporting dielectric cables in high fields , 1996 .

[6] Colonel William T. McLyman,et al. Transformer and inductor design handbook , 1978 .

[7] Jean-Pierre Crine,et al. A molecular model to evaluate the impact of aging on space charges in polymer dielectrics , 1997 .

[8] T. J. Lewis,et al. A mechanical origin for electrical ageing and breakdown in polymeric insulation , 1998, ICSD'98. Proceedings of the 1998 IEEE 6th International Conference on Conduction and Breakdown in Solid Dielectrics (Cat. No.98CH36132).