Load impedance uninterrupted electric supply process with a voltage supply source

摘要

A load impedance uninterrupted electric supply process is disclosed with a voltage supply source. The operational parameters of the output voltage of the voltage supply source are continuously measured by a control unit and when the operational parameters deviate, a sectoral control signal is generated. In order to achieve a parallel emergency supply, the output voltage U2 of the back-up voltage source (1, 2) controllable by the control unit (6) is brought in a first step to the same frequency and phase position as the output voltage U1 of the voltage supply source (3) when the operational parameters lie within the range of threshold values, then an operation voltage U3 = U1.N3/N1 is generated to operate a load impedance (7). The output voltage U2 is maintained by the control unit (6) at approximately the same level, but not exactly at the same level as or above U2 = U3.N2/N3, so that the operation voltage U3 of the load impedance is maintained only by the back-up voltage source (1, 2) when the voltage supply source (3) breaks down.