WO2000045499A1 - Element d'antiparasitage pour un moteur electrique - Google Patents

Element d'antiparasitage pour un moteur electrique Download PDF

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Publication number
WO2000045499A1
WO2000045499A1 PCT/DE1999/004060 DE9904060W WO0045499A1 WO 2000045499 A1 WO2000045499 A1 WO 2000045499A1 DE 9904060 W DE9904060 W DE 9904060W WO 0045499 A1 WO0045499 A1 WO 0045499A1
Authority
WO
WIPO (PCT)
Prior art keywords
capacitor
capacitance
suppressor
interference suppression
interference
Prior art date
Application number
PCT/DE1999/004060
Other languages
German (de)
English (en)
Inventor
Detlef Marth
Christine Mayer
Ingo Richter
Wolfgang Pfaff
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to AU30320/00A priority Critical patent/AU3032000A/en
Publication of WO2000045499A1 publication Critical patent/WO2000045499A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference

Definitions

  • the invention relates to an interference suppressor for an electric motor, in particular for use in a motor vehicle, according to the preamble of the main claim.
  • an interference suppressor is installed in at least two lines of a three-phase generator for a motor vehicle to be suppressed.
  • the interference suppressor comprises a further inductance, each connected in parallel with another capacitance.
  • This known interference suppressor housed in a metal housing is specially designed for this, in particular in motor vehicles with radio systems in the so-called CB radio range to selectively suppress interference frequencies that are in the 27 MHz band.
  • the collector motors mainly used in a motor vehicle e.g. as electric fuel pumps, generate high-frequency interference due to the commutation processes on the collector-brush system, which can, however, disrupt radio reception in the motor vehicle in a much larger frequency range.
  • the radio range to be protected here ranges from the long-wave range from 150 kHz to the ultra-short wave range up to 108 MHz.
  • interference suppressor for an electric motor described at the outset is further developed with the features of the characterizing part of the main claim according to the invention in that the interference suppressor advantageously contains at least two capacitors connected in parallel as a so-called combi element in a largely compact design with externally contactable connections Use of only one component with a simplified assembly on the electric motor can be switched.
  • the capacitance values are selected so that the capacitor with the larger capacitance, including the lead inductances and the internal inductance, has a resonance frequency that ensures interference suppression in a lower frequency range and the capacitor with the small capacitance, including the lead inductances and the internal inductance has a resonance frequency that provides interference suppression in an upper frequency range.
  • the capacitance values of the two capacitors are at least by the factor 1000 different, the capacitor with the larger capacity for interference suppression in the long, medium and short wave range and the capacitor with the smaller capacity for interference suppression in the ultra-short wave range of radio reception.
  • the one capacitor must have a large capacitance.
  • the interference suppression of this capacitor is frequency-dependent and is determined by its capacitance and the inductances that are always present. Due to the unavoidable lead inductances of the circuit and the internal inductance of the capacitor, a capacitor with a large capacitance has a low resonance frequency and therefore no longer works for higher frequencies. For the capacitors to work optimally, the supply inductances of the capacitor would have to be minimized by very, short or wide connecting lines.
  • the interference in the ultra-short wave range has so far been largely determined by the longitudinal inductances; due to the mostly very limited installation space, the interference suppression, the so-called insertion loss, of these chokes cannot be increased arbitrarily.
  • the interference suppressor according to the invention can be advantageously implemented, for example for an electric fuel pump, if the capacitor with the larger capacitance has a value of approximately 2.2 ⁇ F and the capacitor with the smaller capacitance has a value of approximately 1 nF.
  • the capacitor with the larger capacitance can also be formed in a simple manner from a spatially closely adjacent parallel connection of two capacitors of approximately the same size. All capacitors can be spatially closely combined in a combination element that has two external connections.
  • the interference suppressor is accommodated in the pump housing of the electric fuel pump and the connections of the interference suppressor directly between the plus / minus poles of the connection terminals of the voltage supply before the series inductors acting as interference suppressors between the commutator Electric motor and the terminals is switched.
  • CISPR Comite international Special des pertubation radioio-electronics
  • Figure 1 is a schematic diagram of an interference suppressor with two capacitors
  • Figure 2 is a diagram of the insertion loss of various capacitor arrangements depending on the frequency
  • Figure 3 shows an embodiment of an arrangement of the interference suppressor in an electric fuel pump for a motor vehicle.
  • FIG. 1 A basic circuit diagram is shown in FIG. 1, which shows an electric motor 1, which is connected to connecting terminals 2 and 3 for the voltage supply of the electric motor 1 via longitudinal inductors L1 and L2.
  • a combination element 4 consisting of a capacitor C1, for example with 2.2 ⁇ F, and a capacitor C2, for example with 1 nF, is directly soldered or welded to the supply lines or the connection terminals 2 and 3.
  • the capacitance values of the two capacitors C1 and C2 are dimensioned such that the capacitor C1 with the larger capacitance for interference suppression in the long, medium and short wave range from 150 kHz and the capacitor C2 with the smaller capacitance for interference suppression of the elec- tromotors 1 in the ultra-short wave range up to 108 MHz of radio reception.
  • the course of the so-called insertion loss S 21 (measured in dB) of the individual capacitors C1 and C2 and of the combination element 4 over the frequency (measured in MHz) can be seen from FIG.
  • the capacitor C1 has a profile 5, the capacitor C2 a profile 6 and the combination element 4 a profile 7 of the insertion loss S 21 . It can be seen from the course 7 of the combination element 4 that the capacitor C2 brings about an improvement in the interference suppression effect in the higher frequency range.
  • FIG. 3 shows a structural arrangement of the combination element 4 in a housing 10 of an electric fuel umpe for a motor vehicle.
  • the connection terminals 2 and 3 for the electric motor 1 (not shown here) and the longitudinal inductors L1 and L2 are arranged in a corresponding recess in the housing 10.
  • the combination element 4 is conductively connected to the connection terminals 2 and 3, the capacitor C1 consisting of two parallel capacitors connected in the illustrated embodiment and the relatively small capacitor C2 being attached to the outside.
  • the capacitor C2 can be tight here or can be provided with additional line inductances.
  • the entire interference suppressor can thus be easily integrated into the housing 10 of the electric motor 1 by attaching only one component.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention concerne un élément d'antiparasitage destiné à un moteur électrique (1), qui contient au moins deux condensateurs (C1, C2) montés en parallèle entre les bornes de connexion de l'alimentation en tension du moteur électrique (1). Les valeurs de capacité respectives sont sélectionnées de sorte que le condensateur (C1) avec la plus grande capacité présente, avec prise en compte des inductances de ligne d'alimentation et de l'inductance interne, une fréquence de résonance servant à un antiparasitage dans une plage de fréquence inférieure, et que le condensateur (C2) ayant la capacité la plus petite présente, avec prise en compte des inductances de ligne d'alimentation et de l'inductance interne, une fréquence de résonance servant à un déparasitage dans une plage de fréquence supérieure.
PCT/DE1999/004060 1999-01-28 1999-12-24 Element d'antiparasitage pour un moteur electrique WO2000045499A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU30320/00A AU3032000A (en) 1999-01-28 1999-12-24 Interference suppression element for an electric motor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904302A DE19904302A1 (de) 1999-01-28 1999-01-28 Entstörglied für einen Elektromotor
DE19904302.7 1999-01-28

Publications (1)

Publication Number Publication Date
WO2000045499A1 true WO2000045499A1 (fr) 2000-08-03

Family

ID=7896273

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/004060 WO2000045499A1 (fr) 1999-01-28 1999-12-24 Element d'antiparasitage pour un moteur electrique

Country Status (4)

Country Link
AU (1) AU3032000A (fr)
DE (1) DE19904302A1 (fr)
TW (1) TW456115B (fr)
WO (1) WO2000045499A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008049759A1 (fr) 2006-10-24 2008-05-02 Brose Fahrzeugteile Gmbh & Co. Kg, Würzburg Mécanisme de commande électromoteur

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004002105B3 (de) * 2004-01-14 2005-06-30 Kuhnke Gmbh KFZ-Kraftstoffpumpe
DE102007019431A1 (de) * 2007-04-25 2008-10-30 Robert Bosch Gmbh Elektromotor
DE102009054717A1 (de) * 2009-12-16 2011-06-22 Robert Bosch GmbH, 70469 Elektromotor mit Entstörfilter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3439894A1 (de) * 1984-10-31 1986-04-30 Siemens AG, 1000 Berlin und 8000 München Entstoerte anordnung aus einer umrichterschaltung und einer maschine
EP0336530A2 (fr) * 1988-04-07 1989-10-11 Automotive Components Dunstable Limited Suppression des parasites radiophoniques
DE29613462U1 (de) * 1996-07-25 1997-11-20 Black & Decker Inc., Newark, Del. Elektrisches Gerät mit einem Elektromotor
US5723924A (en) * 1995-02-08 1998-03-03 Valeo Systemes D'essuyage Motorized reduction gear unit, especially for driving a vehicle screen wiper apparatus
DE29619780U1 (de) * 1996-11-15 1998-03-12 Robert Bosch Gmbh, 70469 Stuttgart Entstörvorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759081A1 (de) * 1977-12-30 1979-07-12 Bosch Gmbh Robert Entstoerglied fuer kraftfahrzeuge
DE2828985A1 (de) * 1978-07-01 1980-01-03 Beru Werk Ruprecht Gmbh Co A Anordnung zum entstoeren der lichtmaschine einer brennkraftmaschine
DE3029697A1 (de) * 1980-08-06 1982-03-11 Robert Bosch Gmbh, 7000 Stuttgart Tiefpassanordnung
GB8808146D0 (en) * 1988-04-07 1988-05-11 Delco Prod Overseas Radio interference suppression

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3439894A1 (de) * 1984-10-31 1986-04-30 Siemens AG, 1000 Berlin und 8000 München Entstoerte anordnung aus einer umrichterschaltung und einer maschine
EP0336530A2 (fr) * 1988-04-07 1989-10-11 Automotive Components Dunstable Limited Suppression des parasites radiophoniques
US5723924A (en) * 1995-02-08 1998-03-03 Valeo Systemes D'essuyage Motorized reduction gear unit, especially for driving a vehicle screen wiper apparatus
DE29613462U1 (de) * 1996-07-25 1997-11-20 Black & Decker Inc., Newark, Del. Elektrisches Gerät mit einem Elektromotor
DE29619780U1 (de) * 1996-11-15 1998-03-12 Robert Bosch Gmbh, 70469 Stuttgart Entstörvorrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008049759A1 (fr) 2006-10-24 2008-05-02 Brose Fahrzeugteile Gmbh & Co. Kg, Würzburg Mécanisme de commande électromoteur
DE102006050067A1 (de) * 2006-10-24 2008-05-08 Siemens Ag Elektromotorischer Stellantrieb

Also Published As

Publication number Publication date
TW456115B (en) 2001-09-21
DE19904302A1 (de) 2000-08-24
AU3032000A (en) 2000-08-18

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