Power supply circuit for changing loads with three phases

摘要

The circuit arrangement has a switching device that has four connecting groups (A11-A14,A21-A24,A31,A32,A41-A43) for different loads (I1,I2,M1,M2,O1,O2,O3), where one connecting group is assigned to a control circuit. Another connecting group is assigned another control circuit which comprises another controller and another group of controllable switching unit (S211 to S215, S221 to S223, S231,S232) as actuator for adjusting the voltage. The third and fourth connecting groups are assigned a common third control circuit. An independent claim is also included for an assembly made from circuit arrangement.