Power grid filter choke
AssigneeRobert Bosch GmbH
InventorRoland Donner
Life of this patent
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Abstract
The object of the invention is to implement a circuit arrangement, which in rated operation without resonance generates as little power loss as possible, but on suitable excitation effects a disproportionate asymmetrical damping, so that resonances and overvoltages associated with them are avoided. The object is attained by using a damping member 5a, b, c, which effects the damping in proportion to a primary circuit parameter. The advantage is the adaptive performance of a power grid filter equipped with the choke of the invention.
Claims10
A choke for power grid filters, having a primary winding (1a, b, c) for connecting the choke to a primary circuit (2) and a secondary winding (1d) with a secondary circuit (4), in which the primary winding (1a, b, c) and secondary winding (1d) are located on a winding core (3) and the secondary circuit (4) includes a damping member (5a, b, c), which effect the damping in the primary circuit (2) by means of the choke, wherein the damping member (5a, b, c) includes means which accomplish the damping in proportion to a primary circuit parameter, and the primary circuit parameter is in particular the primary circuit voltage or the primary circuit current or the primary circuit frequency.
An electrical apparatus, in particular an electrical drive mechanism, comprising:
- a power grid filter, said power grid filter having a choke, said choke having a primary winding (1a, b, c) for connecting the choke to a primary circuit (2) and a secondary winding (1d) with a secondary circuit (4), in which the primary winding (1a, b, c) and secondary winding (1d) are located on a winding core (3) and the secondary circuit (4) includes a damping member (5a, b, c), which effect the damping in the primary circuit (2) by means of the choke, wherein the damping member (5a, b, c) includes means which accomplish the damping in proportion to a primary circuit parameter, and the primary circuit parameter is in particular the primary circuit voltage or the primary circuit current or the primary circuit frequency.
Dependencies are inferred from the claim text.