An actively cooled high power, high frequency transformer with high insulation capability | IEEE Conference Publication | IEEE Xplore

An actively cooled high power, high frequency transformer with high insulation capability


Abstract:

An actively cooled high power, high frequency transformer with high insulation capability for use in a high power multilevel converter is discussed. The transformer is de...Show More

Abstract:

An actively cooled high power, high frequency transformer with high insulation capability for use in a high power multilevel converter is discussed. The transformer is designed for a power level of 350 kW and is realized with amorphous core material and coaxial windings. Special attention is paid to the insulation problem, since the dielectric losses and the influence of the voltage waveform with very steep edges have to be investigated more in detail to guarantee a long lifetime of the device.
Date of Conference: 10-14 March 2002
Date Added to IEEE Xplore: 07 August 2002
Print ISBN:0-7803-7404-5
Conference Location: Dallas, TX, USA

I. INTRODUCTION

The use of Power Electronics (=PE) converters to improve the power quality in the Medium Voltage (=MV) and Low Voltage (= LV) electrical network is growing both in numbers and power handling capacity, see [1]–[4]. Moreover, in future PE conversion technique will also enter MV power distribution market segments, which today are dominated by mature electromechanical and electromagnetic technology. Therefore, also the economical replacement of a typical power frequency MV/LV distribution transformer in the lower power range (100KW-2MW) with a high frequency (= HF) switched “electronic transformer” and extended functionality seems to be feasible. Besides this application HF switched line-side converters incorporating a HF-transformer can replace the bulky power frequency transformer of trains. This gives an opportunity to reduce the size and weight of the supply system for trains, see [5] and [6]. Figure 1 gives an overview.

References

References is not available for this document.