Abstract: A method and a device control a magnetic supply device. The method includes the steps of executing a base structure of a control as a two-loop control having a voltage control loop for a magnetic voltage and a current control loop for the magnetic current, wherein the two control loops or circuits are preferably combined into one controller. The voltage control loop is executed as a status controller, wherein the return parameters for the status controller are adaptively adjusted as necessary to the behavior of a current converter, an output filter and a load. The behavior of the current converter, the output filter and the load are modeled by an observer (e.g. Luenberger observer, Kaiman filter) and the observer adapted to the effective behavior of the current converter, the output filter and the load is tracked. Finally, the current control loop is implemented as an adaptive PI controller.

Abstract: Negative feedback control of a power supply is improved with respect to accuracy of control in that the controlled value is monitored by parallel analog to digital conversion. Additionally, within the negative feedback control loop adjustment of the controlled value to follow a rated value is performed by pulse-width modulation. So as not to be bound with respect to accuracy of adjustment by pulse-width modulation to a minimum pulse-width adjustment increment, fine adjustment is additionally done by superimposing to the pulse-width modulation a pulse-frequency modulated signal.

Abstract: Negative feedback control of a power supply is improved with respect to accuracy of control in that the controlled value is monitored by parallel analog to digital conversion. Additionally, within the negative feedback control loop adjustment of the controlled value to follow a rated value is performed by pulse-width modulation. So as not to be bound with respect to accuracy of adjustment by pulse-width modulation to a minimum pulse-width adjustment increment, fine adjustment is additionally done by superimposing to the pulse-width modulation a pulse-frequency modulated signal.