POWER SUPPLY FOR AN INVERTER

摘要

To be able to maintain the power supply of an inverter which is supplied with power from a supply network even in the event of a power failure, it is proposed according to the invention that in the event of a power failure, the electric power for the power supply (2) of the inverter (1) is obtained from a throttle (7) of the inverter (1) at the output end via an auxiliary winding (13).

主权项

1. A power supply for an inverter (1), which is connected at the output end to an electric power supply network (3) via a throttle (7), characterized in that a secondary-side auxiliary winding (13) which transmits the output voltage (UA) of the inverter (1) to the secondary side of the throttle (7) is provided on the throttle (7), a comparator unit (14), which compares the voltage (U1) of the electric supply network (3) with the voltage (U2) of the secondary side of the throttle (7) is provided in the power supply (2), and electric power is supplied to the power supply (2) either by the electric supply network (3) or via the secondary-side auxiliary winding (13), depending on the comparison.