Filter for Improving the Electromagnetic Compatibility of Components of an Electric Drive of a Vehicle

Patent metadata

Field	Value
Publication number	US-2017194929-A1
Application number	US-201715463579-A
Country	US
Kind code	A1
Filing date	Mar 20, 2017
Priority date	Nov 3, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

A damping device is designed to dampen noise signals in a cable having a plurality of wires. The damping device includes a plurality of first terminals, to which is applied the voltage vector U 1 and where the current vector I 1 flows, a wire of the cable being connected to each first terminal; a plurality of second terminals, to which is applied the voltage vector U 2 and where the current vector h flows, a wire of the cable being connected to each second terminal; and a first plurality of dipoles, whose first terminal is connected to the wire k and whose second terminal is connected to ground.

First claim

What is claimed is:

1 . A damping device to damp interference signals in a cable having a plurality of wires, comprising:
a plurality of first terminals to which a voltage vector U 1 is applied and at which a current vector I 1 flows, wherein a wire of the cable is connected to every first terminal; a plurality of second terminals to which a voltage vector U 2 is applied and at which a current vector 1 2 flows, wherein a wire of the cable is connected to every second terminal; and a first plurality of dipoles whose first terminal is connected to a wire k and whose second terminal is connected to ground,
wherein the following applies:



(
I
)





A

_
_

=

(

A

_
_

11

A

_
_

12

A

_
_

21

A

_
_

22

)



,



(
II
)





(

U
1

_

I
1

_

)

=

(

A

_
_

11

A

_
_

12

A

_
_

21

A

_
_

22

)

·

(

U
2

_

I
2

_

)

;



(
III
)





Y

_
_

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Kochetov Sergey

Classifications

• B60L2270/147

  electro magnetic [EMI] · CPC title

• H03H7/06 Primary

  including resistors (H03H7/075, H03H7/09, H03H7/12, H03H7/13 take precedence) · CPC title

• B60L1/00

  Supplying electric power to auxiliary equipment of vehicles (circuit arrangements for charging batteries H02J7/00) · CPC title

• H04B3/30

  Reducing interference caused by unbalanced currents in a normally balanced line · CPC title

• H03H1/0007 Primary

  of radio frequency interference filters · CPC title