This paper is introducing a new method of operation for a series resonant converter, with intended application in megawatt high voltage DC wind turbines. Compared to a frequency-controlled series resonant converter operated in sub-resonant mode, the new method (entitled pulse removal technique) allows the transformer design to be determined by peak load and maximum switching frequency, while still avoiding over-excitation at reduced load and reduced excitation frequency. This promises transformer size reduction of more than 50%, while losses are kept below 1% from zero to nominal power. A step by step design procedure is proposed and circuit component ratings and efficiency are compared for two variants.
|Titel||Proceedings of the 2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)|
|Status||Udgivet - sep. 2017|
|Begivenhed||2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe) - Warsaw, Polen|
Varighed: 11 sep. 2017 → 14 sep. 2017
|Konference||2017 19th European Conference on Power Electronics and Applications (EPE'17 ECCE Europe)|
|Periode||11/09/2017 → 14/09/2017|