| Abstract |
For dc to dc power conversion with constant voltage transfer ratio, a novel type of a series resonant converter is presented. The converter operates with sinusoidal currents and the devices are switched under "low-voltage" and "low-current" conditions. Thus, the switching losses are low, and high switching frequencies improving the power density can be achieved. Furthermore, the radio interference is minimized. The paper describes the circuit in a half-bridge configuration and presents results obtained from a 3.5-kW converter, operating at switching frequencies of up to 50 kHz. The measurements are compared to a similar hard switched converter operating at a switching frequency of 22 kHz. |
