Circuit for transferring energy between direct current, direct voltage circuits has inverters, rectifier connected via inductance, capacitance on d.c. side and to transformer on a.c. side

摘要

The circuit consists of a conventional power electronic switch with an antiparallel circuit of an actively switched non-blocking power semiconductor and a diode forming an inverter and conventional rectifiers. The inverters are connected via an inductance on the d.c. side and to a transformer on the a.c. side and the rectifier is connected via a capacitor on the d.c. side and to the transformer with a parallel capacitance on the a.c. side. The circuit consists of a conventional center point or bridge circuit power electronic switch with an antiparallel circuit of an actively switched non-blocking power semiconductor and a diode forming an inverter and conventional rectifiers. The inverters are connected via an inductance on the d.c. side and to a transformer on the a.c. side so as to superimpose current and the rectifier is connected via a capacitor on the d.c. side and to the transformer with a parallel capacitance on the a.c. side so as to superimpose a voltage. Independent claims are also included for the following: a method of controlling a circuit for transferring energy between direct current and direct voltage circuits, implementation of a conversion capacitance determining the working point-dependent delay and implementation of an overvoltage limiting network.