Patent ID: 8537576

Claim:
A power supply for generating temporally specifiable, open- and closed-loop controlled current paths, comprising: a first controllable rectifier group that is connectable to an electrical power supply system and includes at least one rectifier having a smoothing inductor at an output; an active filter connectable to the electrical power supply system and connected in parallel to a load, the active filter including a second rectifier group with at least one rectifier and a pulse bridge connected to an output thereof and having four circuit elements, each circuit element having a corresponding free-wheeling diode that is bypassing and conductive in an opposite direction of a bipolar, clocked current injection; and a second-order low pass filter having a clock inductor, a capacitor, and an RC damping, the clock inductor being connected located at an output of the pulse bridge; wherein a voltage of the at least one rectifier of the first controllable rectifier group and a voltage of the active filter in an open and closed loop is controlled, a first controlled system controlling a current of the at least one rectifier of the first controllable rectifier group of the power supply system in open and closed loop via a first controller by an output-side open- and closed-loop controlled variable, and a second controlled system of a second controller for a load current and a subordinate controller for a load voltage controlling the active filter in open and closed loop using a feedforward control variable.