Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
  • H01G4/00—Fixed capacitors; Processes of their manufacture
  • H01G4/32—Wound capacitors
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
  • H01G4/00—Fixed capacitors; Processes of their manufacture
  • H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
  • H01G4/00—Fixed capacitors; Processes of their manufacture
  • H01G4/38—Multiple capacitors, i.e. structural combinations of fixed capacitors
  • H01G4/385—Single unit multiple capacitors, e.g. dual capacitor in one coil

Definitions

• the present invention relates to a three-phase electric cup capacitor with three star-connected capacities in a housing.
• the usual construction of power capacitors in the form of three-phase electric cup capacitors, in particular round winding capacitors in the three-core network consists of three equal-sized capacitor windings, in particular capacitor round windings, which are connected in a triangle. Due to the installation of the capacitor winding in round capacitor cup, the capacitor windings are stacked as a column one above the other. Through the triangle interconnection, the adjacent end contact layers (winding contact bridges) can be interconnected and each form a common connection to a connection wire (outer conductor), which can generally be a connection conductor, such as stranded wire.
• the third connection results from the connection of the respectively lowest and uppermost contact layers (winding contact bridges) of the capacitor winding column.
• star connection would be beneficial over delta connection.
• this is associated with the problem that at least one opposite end contact layer pair requires an intermediate insulation. Due to this fact, the inner wiring compared to the triangle wiring is much more complex and time-consuming during assembly.
• the invention is therefore an object of the invention to provide a three-phase electric cup capacitor in a housing arranged in a columnar plastic film capacitor windings each having the same capacity with a simple or simpler structure.
• this object is achieved by a three-phase electric cup capacitor with three interconnected capacitances in a housing, wherein in the housing two plastic film capacitor winding, each having a hollow capacitor winding core and are provided on the end faces, each with a front contact layer, are arranged in a column above each other one of the two plastic film capacitor winding has a single capacity and the other of the two plastic film capacitor winding two individual capacities and all individual capacities are equal.
• the two adjacent end contact layers of the two plastic film capacitor winding are electrically connected to each other by a connecting wire.
• the connecting wire is connected to the two adjacent front contact layers by soldering.
• the two adjacent end contact layers of the two plastic film capacitor winding can be electrically connected to one another by a contact part arranged between them, which is electrically connected without soldering to each of the two adjacent end contact layers.
• the contact part comprises a preferably planar contact carrier, at least one of the contact carrier substantially vertically upwards and at least one of the contact carrier substantially vertically downwardly extending contact piece with at least one contact tip for making an electrical connection to a respective end contact layer by pressing the Contact tip (s) in the same and a Eindringtiefenbegrenzungs adopted for limitation the penetration depth of the contact tip (s) into the respective end contact layer.
• the contact carrier is substantially annular.
• a plurality of contact pieces are preferably provided equidistantly on the outer edge of the annular contact carrier and extend uniformly thereof substantially vertically upwards or downwards and a plurality of contact pieces are preferably equidistantly provided on the inner edge of the annular contact carrier and extend uniformly thereof in the opposite direction to the contact layers on the outer edge
• the Eindringtiefenbegrenzungs drove several bearing pieces with bearing surfaces or support points.
• the support pieces or a part thereof are preferably provided equidistantly on the outer edge of the annular contact carrier and extend uniformly thereof substantially vertically upwards or downwards.
• the support pieces or a part thereof are preferably provided equidistantly on the inner edge of the annular contact carrier and extend uniformly thereof substantially vertically upwards or downwards.
• the base material of the contact part should preferably be a good electrically conductive metal, preferably brass or copper.
• the base material has a tin coating.
• the contact part is preferably at least partially pressed into at least one of the two end contact layers.
• the plastic film capacitor winding is arranged with the two individual capacitors on the plastic film capacitor winding with the single capacitance, two leads electrically connected via the upper end contact layer of the upper plastic film capacitor winding with the two individual capacitors and extends a lead wire of electrically connected to the top through the hollow capacitor winding cores down and to the lower end of the lower contact layer plastic film capacitor winding.
• the plastic film capacitor winding is arranged with the individual capacity on the plastic film capacitor winding with the two individual capacitances, two leads extend from above through the hollow capacitor winding cores down and over the lower end contact layer of the lower plastic film capacitor winding with the two Single capacitors are electrically connected and a lead wire to the upper end contact layer of the upper plastic film capacitor winding is electrically connected.
• the plastic film capacitor windings may be made of plastic films provided with a metal layer, in particular metal-coated polypropylene films.
• plastic film capacitor windings are produced from metal foils insulated from one another by a plastic film.
• the invention is based on the surprising finding that only two capacitor windings are required one above the other due to the special design and arrangement of the capacitor windings.
• the two individual capacitors of one of the two capacitor windings are already electrically connected on one side by the front contact layers (winding bridge injection). If the interconnected winding bridge is then connected to the winding bridge (front contact layer) of the other capacitor winding when assembling the two capacitor windings to form a column, then the neutral point is already connected.
• the internal wiring is much easier. An additional insulation between the Wickel viten deleted. As a result, material and production time is saved in the construction of the cup capacitor.
• Figure 1 is a longitudinal sectional view of a three-phase electrical
• Figure 2 is a longitudinal sectional view of a three-phase electrical
• Figure 3 is a longitudinal sectional view of a three-phase electrical
• Figure 4 is a side view (top) and a top view (bottom) of a
• Figure 1 shows a three-phase electric cup capacitor with three stemverschalteten capacities in a housing during manufacture, ie, still without any insulating caps, a possible jacket insulation, a housing and a housing cover.
• Two plastic film capacitor windings 10 and 12 each having a hollow capacitor winding core 14 and are provided at the end faces, each with a front contact layer 16 and 18 or 20 and 22, are like a column above the other arranged.
• the two adjacent end contact layers 18 and 20 of the two plastic film capacitor windings 10 and 12 are electrically connected to each other by a connecting wire 24 (star point), which is connected by soldering to the two adjacent front contact layers 18 and 20.
• the upper plastic film capacitor winding 10 has an individual capacitance and the lower plastic film capacitor winding 12 has two individual capacitances. All individual capacities are equal.
• the plastic film capacitor winding 12 with the two individual capacitances is wound from a plastic film with twice the width b of the plastic film, from which the plastic film capacitor winding 10 is wound with the individual capacity, and divided by a wrapped release film 26 in the two individual capacities.
• Two leads 28 and 30 extend downwardly from above through the hollow capacitor winding cores 14 of the two plastic film capacitor windings 10 and 12 and are electrically connected to the two individual capacitors via the lower end contact layer 22 of the lower plastic film capacitor winding 12.
• a lead wire 32 is electrically connected to the upper end contact layer 16 of the upper plastic film capacitor winding 10.
• Both plastic film capacitor windings 10 and 12 are made of a provided with a metal layer plastic film, in particular metal vapor-deposited polypropylene film, (wound).
• the embodiment shown in Figure 2 differs from that in Figure 1 in that the order of the plastic film capacitor windings 10 and 12 is reversed.
• the plastic film capacitor winding 12 with the two individual capacitances is thus arranged above the plastic film capacitor winding 10 with the individual capacitance.
• two connecting wires 28 and 30 are electrically connected via the upper end contact layer 20 of the upper plastic film capacitor winding 12 with the two individual capacitors and a connecting wire 32 extends from above through the hollow capacitor winding cores 14 of the two plastic film capacitor windings 10 and 12 below and is electrically connected to the lower end contact layer 18 of the lower plastic film capacitor winding 10.
• FIG. 3 differs from that in FIG. 2 in that a contact part 34 is provided instead of the connecting wire 24. Said contact part 34 is electrically connected without soldering to each of the two adjacent end contact layers 22 and 16. In addition, the contact part 34 is at least partially pressed into both end contact layers. The contact part 34 serves as a star point.
• said contact member 34 is shown in side view (top) and in plan view from above (below). It has a substantially annular flat contact carrier 36 and a terminal lug 38 extending inwardly from the contact carrier 36 in the same plane, which need not necessarily be present.
• On the outer edge are circumferentially equidistantly alternating contact pieces 40, each with a contact tip 42 and support pieces 44 are arranged with bearing surfaces 46, of which only a few are marked. Both the contact pieces 40 and the support pieces 44 extend vertically downwards.
• contact pieces 40 are provided with contact tips 42 and support pieces 44 with bearing surfaces 46, which extend vertically upwards.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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• 2011
  • 2011-06-15 DE DE102011104257A patent/DE102011104257B4/de not_active Expired - Fee Related
• 2012
  • 2012-05-15 US US14/126,574 patent/US9922769B2/en not_active Expired - Fee Related
  • 2012-05-15 EP EP12721771.9A patent/EP2721622A1/de not_active Withdrawn
  • 2012-05-15 CN CN201280029437.7A patent/CN103748645B/zh not_active Expired - Fee Related
  • 2012-05-15 CA CA2839489A patent/CA2839489A1/en not_active Abandoned
  • 2012-05-15 WO PCT/EP2012/002084 patent/WO2012171606A1/de active Application Filing

Non-Patent Citations (2)

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