METHOD FOR OPERATING A DC VOLTAGE CONVERTER WITH HIGH EFFICIENCY BY MEANS OF DYNAMIC REGULATION OF COIL INDUCTANCE

摘要

The invention relates to a method for operating a DC voltage converter comprising a circuit breaker and a coil having a coil core, a main winding arranged on the coil core and a control winding arranged on the coil core, the main winding guiding a main winding current, the average value of which is adjusted by a pulse duty factor of the circuit breaker in such a way that either a constant output current or a constant output voltage of the DC voltage converter is obtained, and the control winding guiding a control current that is adjusted according to the average value of the main winding current, the control current being adjusted by means of a pulse duty factor of a control switch. In this way, the efficiency of the DC voltage converter is increased in each operating condition of the DC voltage converter, i.e. for each output voltage or each output current, independently from the geometry of the coil.