| Abstract |
A new soft switching converter concept, namely nonlinear resonant inverters, is introduced. The objective is to achieve high frequency switching of inverter phase arms (poles) and at the same time reduce the current and voltage stresses on semiconductors and limit the number and size of additional components. The nonlinear resonant pole inverter is discussed in detail, a topology which requires, apart from two series connected smoothing capacitors on the supply, only a parallel resonant tank including a non-linear inductor with a current feedback winding per phase. Major features of the circuit are: little over dimensioning of installed rating of semiconductors in the inverter, low reactive power rating of resonant tank and soft reverse recovery of the inverter diodes. |
