초록 ▼

A power supply load transfer system reduces the transients produced at a moment of transfer by reducing the first and second half-cycle durations of the reserve signal output following the moment of transfer by equal amounts so that a previous phase lag between a primary signal and the reserve signa

A power supply load transfer system reduces the transients produced at a moment of transfer by reducing the first and second half-cycle durations of the reserve signal output following the moment of transfer by equal amounts so that a previous phase lag between a primary signal and the reserve signal is eliminated.

대표청구항 ▼

A power supply load transfer system wherein a reserve power source operates in an idling condition by phase lagging a primary power source characterized by: number storage means wherein a controllable number is stored, said number controlling the phase lag magnitude, and number reduction means reduc

A power supply load transfer system wherein a reserve power source operates in an idling condition by phase lagging a primary power source characterized by: number storage means wherein a controllable number is stored, said number controlling the phase lag magnitude, and number reduction means reducing said number to a predetermined minimum value in two equally successive steps operative for reducing said phase lag, said successive steps thereby reducing equally the time intervals of a first and second half-cycle of a periodic signal output of the reserve power source following a moment of transfer of a load from the primary power source to the reserve power source.