Optimized design of the main circuit of LLC converter for high frequency application

The paper deals with optimized design of parameters of the main circuit of LLC resonant converter with output power of 1 kW designed for distributed power systems application. The switching frequency should be 500 kHz, therefore the optimization of main circuit in the way of proper transformer design and selection of compromise between conduction losses, switching losses and regulation range with stable ZVS condition is necessary. Just in this way the construction of device will be fulfilling nowadays demands of power electronics.