Semiconductor component reduction in AC/DC converters with transmission lines
Paper i proceeding, 2013

By replacing the power inductor in a traditional converter topology with a transmission line, new functions such as inverting and non-inverting output voltage polarity from the same converter will arise. In this paper, the proposed technology was investigated in an AC/DC converter where the traditional topology (diode bridge and secondary DC/DC converter) was replaced with a single converter with a transmission line as an energy storage device. The transmission line was realized with lumped elements and the major benefit was found to be a reduced number of semiconductors; the same functionality could be achieved with only half the original amount. Due to practical reasons, the operating principle was verified in a DC/AC-circuit which was simulated in LTspice. The simulations showed that a switch mode converter with transmission line is possible to use for the suggested application with a power stage efficiency of ηPwSt=87%. To verify the simulations, a prototype was built and tested which showed that the principle works in practice with a measured power stage efficiency of ηPwSt=85%.

Emerging Technology

Converter Circuit

High Frequency Power Converter

Emerging Topology


S. Sander

Ericsson Power Solutions

Andreas Henriksson

Chalmers, Energi och miljö, Elkraftteknik

2013 15th European Conference on Power Electronics and Applications, EPE 2013

Article number 6634435-


Annan elektroteknik och elektronik