| 摘要 |
The invention relates to an arrangement for supplying a user (12) that consumes power in a non-continuous manner from a d.c. system (UB). The arrangement comprises a d.c. link (14, 22). The user (12) can be connected to said link. A capacitor (21) that is suitable for supplying the user with energy for a short time is allocated to said link. The aim of the invention is to connect the d.c. link (14, 22) to the d.c. system (UB). A current controller (24, 30) is provided for supplying an essentially constant current (i) to the capacitor (21) and a user (12) being connected to said link. The desired value of said current controller (30) is adapted to the relevant current demand of the user (12) by means of a second controller (34). Such an arrangement can be called an active filter which is particularly suitable for electronically commutated motors and motors with PWM current control. The arrangement comprises an electronic security device (240) that, when being actuated, switches off the current controller (30), automatically switches the current controller (30) back on after a pre-determined period has elapsed and optionally repeats the switching-on attempts several times. |
