EP4639592A2 - Class y capacitor and inverter - Google Patents

Class y capacitor and inverter

Info

Publication number
EP4639592A2
EP4639592A2 EP23832691.2A EP23832691A EP4639592A2 EP 4639592 A2 EP4639592 A2 EP 4639592A2 EP 23832691 A EP23832691 A EP 23832691A EP 4639592 A2 EP4639592 A2 EP 4639592A2
Authority
EP
European Patent Office
Prior art keywords
class
leg
capacitor
section
electric conductor
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP23832691.2A
Other languages
German (de)
French (fr)
Inventor
Guido RASEK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo eAutomotive Germany GmbH
Original Assignee
Valeo eAutomotive Germany 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 Valeo eAutomotive Germany GmbH filed Critical Valeo eAutomotive Germany GmbH
Publication of EP4639592A2 publication Critical patent/EP4639592A2/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10—Housing; Encapsulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
    • 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
    • H01G4/002—Details
    • H01G4/228—Terminals
    • 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
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H01G4/248—Terminals the terminals embracing or surrounding the capacitive element, e.g. caps
    • 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
    • H01G4/35—Feed-through capacitors or anti-noise 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
    • H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/327—Means for protecting converters other than automatic disconnection against abnormal temperatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/10—Housing; Encapsulation
    • H01G2/106—Fixing the capacitor in a housing
    • 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

Definitions

  • the invention relates to a class Y capacitor, which can be connected between a line and ground, comprising a first and a second electric conductor, which are separated by a dielectric medium, wherein the first electric conductor is connected to a first leg and the second electric conductor is connected to a second leg.
  • a class Y capacitor which is also known as “line to ground capacitor”, can be placed between a line and ground in order to prevent or minimize negative effects of electromagnetic interference and radiofrequency interference.
  • Class Y capacitors are used as filter components in high-voltage electric of automobiles. Actually, there is a trend towards higher voltages, higher switching frequencies and faster switching speeds. When conventional class Y capacitors are used, they tend to overheat due to losses of the filtering function, which can lead to failure. Therefore, the operating temperature of class Y capacitors has to be kept below a predetermined limit. Most class Y capacitors are provided with a plastic housing, which does not really conduct heat. As a workaround, several class Y capacitors are connected in series.
  • the object of the invention is to provide a class Y capacitor, which can be operated as a filter component in a high-voltage application without overheating.
  • the invention is based on the idea that a class Y capacitor can be operated without the danger of overheating, when the first leg has a larger cross-section than the second leg.
  • the first leg can then be connected to a chassis of a housing or ground, in order to dissipate heat from the capacitor. When sufficient heat can be dissipated, there is no risk that the capacitor overheats.
  • a conventional class Y capacitor such that it has two legs with different cross-sections the risk of overheating can be avoided.
  • Implementation of the invention is cheap, therefore the inventive solution is attractive for all applications in which a class Y capacitor is subjected to higher voltages, higher switching frequencies and faster switching speeds.
  • the first leg comprises two or more leads. Using several leads increases the surface through which heat is dissipated. Several leads can also improve the mechanical stability of the place Y capacitor, when it is placed on a printed circuit board.
  • the leads are formed as wires, which are preferably arranged in parallel.
  • leads in the form of wires is easy, therefore the inventive capacitors can be produced with conventional machines.
  • wires can easily be placed on a PCB.
  • the first leg of the inventive class Y capacitor is formed as a strip.
  • the strip has a rectangular cross-section. Due to this shape the first leg has a larger cross-section than the second leg, so that a larger amount of heat can be dissipated through the strip.
  • Such a strip is able to dissipate several times more heat compared to a conventional wire with a circular cross-section.
  • the electric conductors of the inventive class Y capacitor can be divided in several parts, wherein each part is connected to the first leg and the second leg.
  • the class Y capacitor comprises three parts.
  • the three parts are formed as bobbins, which are preferably arranged in parallel.
  • Each bobbin may be provided with a housing, which can be made of a plastic material or a metal material.
  • the first and second electric conductors of the inventive class Y capacitor can be received in a metal housing.
  • the metal housing of the inventive class Y capacitor can be provided with an attachment point for mounting a heat dissipating component.
  • the attachment point can be provided with a hole, so that a screw can be used for mounting the capacitor on a support.
  • first electric conductor and/or the first leg is/are connected to the metal housing.
  • the metal housing supports the transfer of heat from the conductor to the housing.
  • the invention relates to an inverter with an inventive class Y capacitor, which is connected with the first leg having the larger cross-section to a chassis and/or ground and with the second leg to an AC line or a DC line.
  • the inventive inverter is very reliable because the class Y capacitor does not overheat.
  • Fig. 1 a first embodiment of an inventive class Y capacitor
  • Fig. 2 a second embodiment of an inventive class Y capacitor
  • Fig. 3 a third embodiment of an inventive class Y capacitor
  • Fig. 4 a fourth embodiment of an inventive class Y capacitor
  • Fig. 5 an inventive inverter.
  • Fig. 1 shows a first embodiment of a class Y capacitor 1 in an exploded perspective view, which is formed as a cuboid.
  • a first electric conductor 2 and a second electric conductor 3 are received, which are separated by a dielectric medium and which are formed as wound-up films.
  • the first electric conductor 2 is connected to a first leg 4, the second electric conductor 3 is connected to a second leg 5.
  • the class Y capacitor 1 also comprises a housing 6 in the form of a cuboid case with one open side, in which the wound-up electric conductors 2, 3 can be inserted.
  • the housing 6 is preferably made of a metal material in order to further optimize the thermal behaviour.
  • the housing can e.g. made from aluminium, steel or a plastic material.
  • Both legs 4, 5 are formed as wires, whereby the first leg 4 has a larger cross-section than the second leg 5.
  • the class Y capacitor 1 is in particular suitable for applications, in which it is necessary to prevent or minimize negative effects of electromagnetic interference and radiofrequency interference, like in an inverter, which converts direct current into alternating current. During operation the class Y capacitor 1 heats up due to electric losses. This heat has to be dissipated, so that the temperature of the class Y capacitor 1 does not exceed a predetermined limit temperature.
  • the first leg 4 having the larger cross-section is suitable for being connected to a housing of an electronic device, for example an inverter housing.
  • the second leg 5 is intended to be connected to a busbar of the electronic device.
  • the first leg 4 acts as a heat conductor which helps to dissipate heat from the class Y capacitor 1 .
  • This embodiment has the advantage that no additional cooling like water cooling is necessary. Dissipating the heat from the class Y capacitor 1 through the first leg 4 with the larger cross-section is sufficient to keep the temperature below the limit temperature.
  • Fig. 2 shows a second embodiment of a class Y capacitor 7.
  • the class Y capacitor 7 comprises the first electric conductor 2 and the second electric conductor 3, which are wound-up, and the housing 6, in which the electric conductors 2, 3 are inserted.
  • the first electric conductor 2 is connected to two separate first legs 8, 9.
  • the second electric conductor 3 is connected to two separate second legs 10, 11.
  • the first legs 8, 9 have a larger cross-section than the second legs 10, 11.
  • the legs 8, 9, 10, 11 have a circular cross-section, but other shapes are also possible like a square or rectangular cross-section.
  • the class Y capacitor 7 can even dissipate more heat compared to the class Y capacitor 1 of the first embodiment.
  • using four legs improves the mechanical stability, when the class Y capacitor 7 is mounted on a support like a printed circuit board.
  • the first legs 8, 9 can be connected to a metal housing of an electronic device like an inverter.
  • Fig. 3 shows a third embodiment of a class Y capacitor 12, which is similar to the first embodiment.
  • the class Y capacitor 12 comprises a first leg 13 and a second leg 5.
  • the first leg 13 has a rectangular cross-section and is formed as a strip. Accordingly, a comparatively large amount of heat can be dissipated through the first leg 13 due to its large cross-section.
  • the first leg 13 has an angled end section 14 which is provided with a hole 15, so that the class Y capacitor 12 can be fixed on a support by a screw.
  • the first leg 13 can be connected to a chassis or a housing of an inverter, the second leg 5 can be connected to a busbar.
  • the first leg 13 is internally connected to a bobbin of the class Y capacitor 12.
  • the first leg 13 could be connected to the housing 6, which is made of metal and which serves as a ground connection.
  • a capacitor film is connected to the metal housing inside of the housing 6. This structure is thermally advantageous for the first leg 13 and a housing connection.
  • Fig. 4 shows a fourth embodiment of a class Y capacitor 16, with a first conductor and a second conductor, which are divided in three parts which are formed as bobbins 17 and which are arranged in parallel.
  • a first leg 18, which is connected to the first electric conductor, has a larger cross-section than a second leg 19, which is connected to the second electric conductor.
  • Both legs 18, 19 are provided with angled end sections 20, 21 which are each provided with a hole 22.
  • the class Y capacitor 16 can be received in a housing (not shown). On the side of the leg 18 with the larger cross-section the thermal interface of the class Y capacitor 16 is better than on the other side of the leg 19 due to the asymmetric connection.
  • Fig. 4 shows a fourth embodiment of a class Y capacitor 16, with a first conductor and a second conductor, which are divided in three parts which are formed as bobbins 17 and which are arranged in parallel.
  • a first leg 18, which is connected to the first electric conductor has a larger cross-
  • FIG. 5 is a schematic view of an inverter 23, which is connected to a battery 24 and a motor 25.
  • DC current from the battery 24 is converted by the inverter 23 into AC current.
  • the inverter comprises an high voltage DC bus filter, which exemplarily consists of inductors 26, class Y capacitors 27 and power semiconductor devices 28.
  • the AC current is used to drive the motor 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Inverter Devices (AREA)
  • Power Conversion In General (AREA)

Abstract

Class Y capacitor (1, 7, 12, 16, 27), which can be connected between a line and ground, comprising a first and a second electric conductor (2, 3), which are separated by a dielectric medium, wherein the first electric conductor (2) is connected to a first leg (4, 8, 9, 13, 18) and the second electric conductor (3) is connected to a second leg (5, 10, 11, 19), wherein the first leg (4, 8, 9, 13, 18) has a larger cross-section than the second leg (5, 10, 11, 19). In addition, an inverter (23) with a class Y capacitor (1, 7, 12, 16, 27) is described.

Description

Class Y capacitor and inverter
The invention relates to a class Y capacitor, which can be connected between a line and ground, comprising a first and a second electric conductor, which are separated by a dielectric medium, wherein the first electric conductor is connected to a first leg and the second electric conductor is connected to a second leg.
A class Y capacitor, which is also known as “line to ground capacitor”, can be placed between a line and ground in order to prevent or minimize negative effects of electromagnetic interference and radiofrequency interference.
Class Y capacitors are used as filter components in high-voltage electric of automobiles. Actually, there is a trend towards higher voltages, higher switching frequencies and faster switching speeds. When conventional class Y capacitors are used, they tend to overheat due to losses of the filtering function, which can lead to failure. Therefore, the operating temperature of class Y capacitors has to be kept below a predetermined limit. Most class Y capacitors are provided with a plastic housing, which does not really conduct heat. As a workaround, several class Y capacitors are connected in series.
The object of the invention is to provide a class Y capacitor, which can be operated as a filter component in a high-voltage application without overheating.
This object is achieved by a class Y capacitor with the features of claim 1 .
The invention is based on the idea that a class Y capacitor can be operated without the danger of overheating, when the first leg has a larger cross-section than the second leg. The first leg can then be connected to a chassis of a housing or ground, in order to dissipate heat from the capacitor. When sufficient heat can be dissipated, there is no risk that the capacitor overheats. By modifying a conventional class Y capacitor such that it has two legs with different cross-sections the risk of overheating can be avoided. Implementation of the invention is cheap, therefore the inventive solution is attractive for all applications in which a class Y capacitor is subjected to higher voltages, higher switching frequencies and faster switching speeds.
According to the invention it may be envisaged that the first leg comprises two or more leads. Using several leads increases the surface through which heat is dissipated. Several leads can also improve the mechanical stability of the place Y capacitor, when it is placed on a printed circuit board.
According to a preferred embodiment of the invention the leads are formed as wires, which are preferably arranged in parallel. Using leads in the form of wires is easy, therefore the inventive capacitors can be produced with conventional machines. In addition, such wires can easily be placed on a PCB.
Preferably, the first leg of the inventive class Y capacitor is formed as a strip. Preferably, the strip has a rectangular cross-section. Due to this shape the first leg has a larger cross-section than the second leg, so that a larger amount of heat can be dissipated through the strip. Such a strip is able to dissipate several times more heat compared to a conventional wire with a circular cross-section.
The electric conductors of the inventive class Y capacitor can be divided in several parts, wherein each part is connected to the first leg and the second leg. Preferably, the class Y capacitor comprises three parts.
Preferably, the three parts are formed as bobbins, which are preferably arranged in parallel. Each bobbin may be provided with a housing, which can be made of a plastic material or a metal material.
The first and second electric conductors of the inventive class Y capacitor can be received in a metal housing. The metal housing of the inventive class Y capacitor can be provided with an attachment point for mounting a heat dissipating component. The attachment point can be provided with a hole, so that a screw can be used for mounting the capacitor on a support.
It is particularly preferred that the first electric conductor and/or the first leg is/are connected to the metal housing. The metal housing supports the transfer of heat from the conductor to the housing.
In addition, the invention relates to an inverter with an inventive class Y capacitor, which is connected with the first leg having the larger cross-section to a chassis and/or ground and with the second leg to an AC line or a DC line. The inventive inverter is very reliable because the class Y capacitor does not overheat.
The invention is explained by means of preferred examples with reference to the drawings. The drawings are schematic and show:
Fig. 1 a first embodiment of an inventive class Y capacitor;
Fig. 2 a second embodiment of an inventive class Y capacitor;
Fig. 3 a third embodiment of an inventive class Y capacitor;
Fig. 4 a fourth embodiment of an inventive class Y capacitor; and
Fig. 5 an inventive inverter.
Fig. 1 shows a first embodiment of a class Y capacitor 1 in an exploded perspective view, which is formed as a cuboid. Within the capacitor 1 a first electric conductor 2 and a second electric conductor 3 are received, which are separated by a dielectric medium and which are formed as wound-up films. The first electric conductor 2 is connected to a first leg 4, the second electric conductor 3 is connected to a second leg 5. In addition, the class Y capacitor 1 also comprises a housing 6 in the form of a cuboid case with one open side, in which the wound-up electric conductors 2, 3 can be inserted. The housing 6 is preferably made of a metal material in order to further optimize the thermal behaviour. However, in other embodiments the housing can e.g. made from aluminium, steel or a plastic material.
Both legs 4, 5 are formed as wires, whereby the first leg 4 has a larger cross-section than the second leg 5. The class Y capacitor 1 is in particular suitable for applications, in which it is necessary to prevent or minimize negative effects of electromagnetic interference and radiofrequency interference, like in an inverter, which converts direct current into alternating current. During operation the class Y capacitor 1 heats up due to electric losses. This heat has to be dissipated, so that the temperature of the class Y capacitor 1 does not exceed a predetermined limit temperature. The first leg 4 having the larger cross-section is suitable for being connected to a housing of an electronic device, for example an inverter housing. The second leg 5 is intended to be connected to a busbar of the electronic device. Due to its larger cross-section the first leg 4 acts as a heat conductor which helps to dissipate heat from the class Y capacitor 1 . This embodiment has the advantage that no additional cooling like water cooling is necessary. Dissipating the heat from the class Y capacitor 1 through the first leg 4 with the larger cross-section is sufficient to keep the temperature below the limit temperature.
Fig. 2 shows a second embodiment of a class Y capacitor 7. Those components which are identical to the components of the first embodiment are not explained in detail again. In accordance with the first embodiment the class Y capacitor 7 comprises the first electric conductor 2 and the second electric conductor 3, which are wound-up, and the housing 6, in which the electric conductors 2, 3 are inserted. The first electric conductor 2 is connected to two separate first legs 8, 9. The second electric conductor 3 is connected to two separate second legs 10, 11. The first legs 8, 9 have a larger cross-section than the second legs 10, 11. In the present embodiment the legs 8, 9, 10, 11 have a circular cross-section, but other shapes are also possible like a square or rectangular cross-section. As the overall cross- section of the first legs 8, 9 is larger compared to the first embodiment, the class Y capacitor 7 can even dissipate more heat compared to the class Y capacitor 1 of the first embodiment. In addition, using four legs improves the mechanical stability, when the class Y capacitor 7 is mounted on a support like a printed circuit board. In order to further improve the heat transfer, the first legs 8, 9 can be connected to a metal housing of an electronic device like an inverter.
Fig. 3 shows a third embodiment of a class Y capacitor 12, which is similar to the first embodiment. The class Y capacitor 12 comprises a first leg 13 and a second leg 5. The first leg 13 has a rectangular cross-section and is formed as a strip. Accordingly, a comparatively large amount of heat can be dissipated through the first leg 13 due to its large cross-section. The first leg 13 has an angled end section 14 which is provided with a hole 15, so that the class Y capacitor 12 can be fixed on a support by a screw. The first leg 13 can be connected to a chassis or a housing of an inverter, the second leg 5 can be connected to a busbar. In this third embodiment the first leg 13 is internally connected to a bobbin of the class Y capacitor 12. Alternatively, the first leg 13 could be connected to the housing 6, which is made of metal and which serves as a ground connection. In this case, a capacitor film is connected to the metal housing inside of the housing 6. This structure is thermally advantageous for the first leg 13 and a housing connection.
Fig. 4 shows a fourth embodiment of a class Y capacitor 16, with a first conductor and a second conductor, which are divided in three parts which are formed as bobbins 17 and which are arranged in parallel. A first leg 18, which is connected to the first electric conductor, has a larger cross-section than a second leg 19, which is connected to the second electric conductor. Both legs 18, 19 are provided with angled end sections 20, 21 which are each provided with a hole 22. The class Y capacitor 16 can be received in a housing (not shown). On the side of the leg 18 with the larger cross-section the thermal interface of the class Y capacitor 16 is better than on the other side of the leg 19 due to the asymmetric connection. Fig. 5 is a schematic view of an inverter 23, which is connected to a battery 24 and a motor 25. DC current from the battery 24 is converted by the inverter 23 into AC current. The inverter comprises an high voltage DC bus filter, which exemplarily consists of inductors 26, class Y capacitors 27 and power semiconductor devices 28. The AC current is used to drive the motor 25.
List of reference numbers
1 class Y capacitor
2 first electric conductor
3 second electric conductor
4 first leg
5 second leg
6 housing
7 class Y capacitor
8 first leg
9 first leg
10 second leg
11 second leg
12 class Y capacitor
13 first leg
14 end section
15 hole
16 class Y capacitor
17 bobbin
18 first leg
19 first leg
20 end section
21 end section
22 hole
23 inverter
24 battery
25 motor
26 inductor
27 class Y capacitor
28 power semiconductor device

Claims

Claims
1. Class Y capacitor (1 , 7, 12, 16, 27), which can be connected between a line and ground, comprising a first and a second electric conductor (2, 3), which are separated by a dielectric medium, wherein the first electric conductor (2) is connected to a first leg (4, 8, 9, 13, 18) and the second electric conductor (3) is connected to a second leg (5, 10, 11 , 19), characterized in that the first leg (4, 8, 9, 13, 18) has a larger cross-section than the second leg (5, 10, 11 , 19).
2. Class Y capacitor according to claim 1 , wherein the first leg (8, 9, 18) comprises two or more leads.
3. Class Y capacitor according to claim 2, wherein the leads are formed as wires, which are preferably arranged in parallel.
4. Class Y capacitor according to any of the preceding claims, wherein the first leg (13, 18) is formed as a strip.
5. Class Y capacitor according to claim 4, wherein the strip (13) has a rectangular cross-section.
6. Class Y capacitor according to any of the preceding claims, wherein the electric conductors (2, 3) are divided in several parts, preferably three parts, wherein each part is connected to the first leg (18) and the second leg (19).
7. Class Y capacitor according to claim 6, wherein the three parts are formed as bobbins (17), which are preferably arranged in parallel.
8. Class Y capacitor according to any of the preceding claims, wherein the conductors (2, 3) are received in a metal housing (6).
9. Class Y capacitor according to claim 8, wherein the metal housing (6) is provided with an attachment point for mounting a heat dissipating component.
10. Class Y capacitor according to claim 8 or 9, wherein the first electric 5 conductor (2) and/or the first leg (4, 8, 9, 13, 18) is/are connected to the metal housing (6).
11 . Inverter (23) with a class Y capacitor (27) according to any one of claims 1 to 10, which is connected with the first leg having the larger cross-section to a chassis w and/or ground and with the second leg to an AC line or a DC line.
EP23832691.2A 2022-12-21 2023-12-12 Class y capacitor and inverter Pending EP4639592A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022134431.2A DE102022134431A1 (en) 2022-12-21 2022-12-21 Class Y capacitor and inverter
PCT/EP2023/085262 WO2024132667A2 (en) 2022-12-21 2023-12-12 Class y capacitor and inverter

Publications (1)

Publication Number Publication Date
EP4639592A2 true EP4639592A2 (en) 2025-10-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP23832691.2A Pending EP4639592A2 (en) 2022-12-21 2023-12-12 Class y capacitor and inverter

Country Status (4)

Country Link
EP (1) EP4639592A2 (en)
JP (1) JP2026500389A (en)
DE (1) DE102022134431A1 (en)
WO (1) WO2024132667A2 (en)

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CN210182238U (en) * 2019-07-22 2020-03-24 四川中星电子有限责任公司 XY combination EMI condenser
JP7180631B2 (en) * 2020-03-27 2022-11-30 株式会社デンソー Capacitor module and power converter

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