WO2021043460A1 - Dispositif de filtration pour un système d'entraînement électrique - Google Patents

Dispositif de filtration pour un système d'entraînement électrique Download PDF

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Publication number
WO2021043460A1
WO2021043460A1 PCT/EP2020/068987 EP2020068987W WO2021043460A1 WO 2021043460 A1 WO2021043460 A1 WO 2021043460A1 EP 2020068987 W EP2020068987 W EP 2020068987W WO 2021043460 A1 WO2021043460 A1 WO 2021043460A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter device
drive system
connection
converter
electrical
Prior art date
Application number
PCT/EP2020/068987
Other languages
German (de)
English (en)
Inventor
Daniel Kuhnle
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
Publication of WO2021043460A1 publication Critical patent/WO2021043460A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/007—Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • 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
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/147—Emission reduction of noise electro magnetic [EMI]
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
    • H03H1/0007—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network of radio frequency interference filters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a filter device for an electric drive system and to an electric drive system with such a filter device.
  • the present invention relates to reducing electromagnetic interference in an electric drive system.
  • interference can be caused by the electrical drive system.
  • These interferences can be, for example, high-frequency interference signals that negatively affect radio reception, for example.
  • Interfering signals of this type must therefore be reliably eliminated or at least sufficiently attenuated in order to avoid impairment of other devices in the vicinity of the drive system.
  • suitable filter devices must be provided that reliably attenuate electromagnetic interference signals.
  • the publication DE 102015 224872 A1 describes a filter assembly for high-voltage connections.
  • the filter arrangement is completely integrated into the power electronics, for example into the power electronics of an electric drive system.
  • the filter assembly can have a toroidal core element which is arranged within the filter housing.
  • the present invention provides a filter device for an electric drive system and an electric drive system with the features of the independent claims. Further embodiments are the subject of the dependent claims.
  • a filter device for an electric drive system can in particular be used to reduce electromagnetic interference from the drive system.
  • the filter device comprises a first filter device, a second filter device and a shielded connecting element.
  • the first filter device is designed to be coupled to an electrical energy source at a first connection.
  • the second filter device is integrated in a converter of the electrical drive system. For example, electrical energy can be provided at a second connection via the second filter device, which energy can be used by the converter to control an electrical machine.
  • the shielded connecting element is designed to electrically couple a second connection of the first filter device to a connection of the second filter device.
  • a separate shielded connection to a corresponding connection element at the connection of the second filter device can be provided for each drive system of the second connection of the first filter device.
  • the first filter device and the second filter device can be designed to filter or attenuate alternating voltage components, in particular higher-frequency frequency components.
  • An electrical drive system with an electrical machine, a converter and a filter device according to the invention is designed to control the electrical machine using a DC input voltage that has been provided.
  • the second filter device of the filter device according to the invention and the converter can in particular be arranged in a common assembly.
  • the second filter device and the converter can be arranged in a common housing or on a common printed circuit board.
  • the first filter device is spatially separated from the assembly with the electrical converter and the second filter device.
  • the second filter device can be provided outside a housing or a printed circuit board which comprises the second filter device and the converter.
  • the present invention is based on the knowledge that higher-frequency interference signals can emanate from an electrical drive system, in particular a drive system with a converter and an electrical machine. These interfering signals can affect other electrical or electronic devices or components in the vicinity of the electrical drive system.
  • the interfering signals occurring in the electric drive system must therefore be eliminated or at least attenuated sufficiently and reliably.
  • assemblies can be provided in a converter of an electrical drive system, for example, which filter the interfering signals that occur. In this way, sufficient electromagnetic compatibility can be guaranteed.
  • EMC filter For the construction of a so-called EMC filter, which attenuates the interfering signals occurring to a sufficient extent, different components are usually required. In addition to capacitive components, inductive components are also required. While the capacitive components can usually be implemented using relatively small capacitors, inductive components often require a relatively large volume - combined with a correspondingly high weight. A correspondingly large structural volume with the associated high weight is therefore required for a complete EMC filter. In addition, depending on the area of application and location of use, different requirements for filtering the interfering signals that occur must be observed. For example, due to different frequency ranges for radio or mobile radio transmissions, different specifications for the filtering of the interfering signals of the electric drive system may also have to be observed. Furthermore, depending on the configuration of the electric drive system, different frequencies can also occur in the interference signals, which must be correspondingly attenuated or eliminated. For this purpose, the filter elements used must be individually adapted to the respective application.
  • part of the filter can be combined directly with the other components of the converter for the electrical drive system.
  • Another part of the filter can be provided separately, that is to say outside the assembly with the converter.
  • the two parts of the filter can be electrically connected to one another by means of a shielded connection.
  • the converter and thus the electrical drive system can be made particularly compact.
  • the other, large-volume and heavy components can be arranged in a separate position.
  • the other components of the first filter device can be positioned almost anywhere in an electric vehicle with such a drive system. This makes it possible to use the installation space of the corresponding system, such as an electric vehicle, in a particularly efficient manner.
  • the filtering can also be separated into a first, for example customer-specific, part and a second, system-specific part.
  • the system-specific parts can be implemented in the second filter device together with the converter.
  • the first filter device by simply varying the first filter device, the first filter device and thus the entire system can be customized.
  • the filter device can be adapted particularly easily to a large number of different specifications.
  • the first filter device comprises an inductive component.
  • the inductive component can be a choke or the like.
  • Inductive components in particular which may also include a core made of a ferrite-containing material or the like, require a high structural volume.
  • the second filter device can comprise a capacitive component.
  • Capacitive components such as capacitors, such as those used for filtering electromagnetic interference signals, generally only require a relatively small structural volume. Components of this type can therefore be implemented particularly simply and without a large structural volume together with the converter in an assembly, for example within a common housing.
  • the high-frequency components of an interference signal can be filtered directly at the converter.
  • capacitive components in particular for filtering interference, can also be provided in the first filter device.
  • capacitive components with a large capacity and a correspondingly large Volume can also be provided outside the second filter device, for example in the first filter device.
  • the second filter device comprises one or more capacitors.
  • a capacitor can be arranged between a reference potential and a connection element of the connection of the second filter device.
  • Such capacitors are also known, for example, as so-called Y capacitors.
  • a capacitor for example a so-called X-capacitor, can also be provided between two connection elements of the connection of the second filter device.
  • the shielded connection element comprises a plurality of coaxial cable connections.
  • a coaxial cable connection can be provided between a connection element of the second connection of the first filter device and a corresponding connection element of the connection of the second filter device.
  • each connection element of the first filter device can be connected to a corresponding connection element of the second filter device via a suitable coaxial cable.
  • the shielding of the coaxial cables can in particular be connected to a reference potential.
  • the electrical machine, the converter and the second filter device form a common assembly.
  • Such compact arrangements are also known, for example, by the term “unit”, eAchse, “eAxIe” or “eAxis”.
  • the drive system further comprises a mechanical transmission.
  • the mechanical transmission can also be implemented together with the electrical machine, the converter and the second filter device as a joint assembly.
  • FIG. 1 a schematic representation of a basic circuit diagram of an electrical drive system with a filter device according to one embodiment
  • FIG. 2 a schematic representation of a basic circuit diagram of an electrical drive system with a filter device according to a further embodiment.
  • FIG. 1 shows a schematic representation of a basic circuit diagram of an electrical drive system 1.
  • the electrical drive system 1 comprises, for example, a converter 20 and an electrical machine 30.
  • the converter 20 can, for example, generate a single-phase or multiphase electrical voltage from an input DC voltage that is provided Machine 30 is provided. In this way, a desired torque and / or a desired speed can be set on the electrical machine 30 in accordance with the voltage provided.
  • interference signals in particular high-frequency interference signals, may occur.
  • these interference signals must be eliminated or at least sufficiently attenuated.
  • a corresponding filter device is provided, which is referred to as an EMC filter, for example.
  • the interference signals are filtered by means of two spatially separated filter devices 11 and 12.
  • a first filter device 11 can, for example, be provided outside the converter 20 as a separate assembly.
  • a second filter device 12 can, for example, be implemented together with the converter 20 as a common assembly.
  • the second filter device 12 can be arranged in the same housing in which the converter 20 is also implemented.
  • the second filter device 12 and the converter 20 can also be arranged on a common printed circuit board or the like.
  • the first filter device 11 and the second filter device 12 are electrically connected to one another via a shielded connection 13.
  • a shielded connection such as a coaxial cable or the like, can be provided for each connection between the first filter device 11 and the second filter device 12.
  • the shielding can be connected to a common reference potential.
  • the first filter device 11 and the second filter device 12 can also have a common reference potential.
  • a first filtering of interference signals can be implemented, for example, by means of the second filter device 12.
  • those components for filtering the interference signals can be implemented in the second filter device 12 which require only a small amount of space or a low weight.
  • Further components, in particular components which require a high weight or a large installation space volume, can also be installed in the first filter device 11.
  • capacitive components which are usually only light in weight and Require volume, be provided in the second filter device 12.
  • Inductive components such as chokes, ferrite cores, etc., on the other hand, can be integrated in the first filter device 11.
  • the power converter 20 with the second filter device 12 can be implemented in a particularly compact manner.
  • the first filter device 11 can be provided outside this arrangement of the converter 20 with the second filter device 12 at a separate location. This enables efficient use of the installation space and the spatial conditions for an electric drive system 1.
  • system-specific filtering of interference signals can be provided, for example, by means of the second filter device 12.
  • this system-specific filtering can be matched to the components of the converter 20 and the electrical machine 30.
  • application-specific filtering and individual adaptation of the filter properties by means of the first filter device 11 can be provided.
  • the first filter device 11 can adapt the filtering to regional regulations or individual specifications. In this way, the electrical drive system with converter 20 and electrical machine 30 can be produced together with the second filter device 12 in large numbers. By individually adapting the first filter device 10, an application-specific or customer-specific adaptation can also take place.
  • FIG. 2 shows a schematic representation of a basic diagram of an electric drive system 1 according to an embodiment. All of the embodiments made previously in connection with FIG. 1 apply here.
  • FIG. 2 illustrates further details of a structure of the electric drive system 1, in particular of the filter devices 11, 12 in one embodiment.
  • the first filter device 11 can be coupled to a direct voltage source 40 at a first connection 111.
  • the first filter device 11 can be connected to corresponding ones via the two shielded connections 131, 132 Connection elements of a connection 121 of the second filter device 12 are connected.
  • the first filter device 11, the second filter device 12, and the shields of the coaxial cables 131, 132 can each be connected to a common reference potential.
  • the first filter device 11 can in particular comprise inductive components LI, L2.
  • the first filter device 11 can comprise one or more choke coils and optionally ferrite cores.
  • the second filter device 12 can in particular comprise one or more capacitors CI, C2, C3.
  • a capacitor CI, C2 can be provided between each connection element and the reference potential.
  • a capacitor C3 can be provided between the two connection elements, that is to say the plus and minus poles.
  • the inductances in the filter device 11 and the capacitors CI, C2, C3 in the second filter device 12 can be matched to one another. In this way, the frequencies or frequency ranges to be suppressed can be specifically adapted to the respective application.
  • the power converter 20 and the second filter device 12 can be implemented as a common assembly, but it is also possible, in addition, to implement an electrical drive and, if necessary, a gearbox as well as a required cooling device as a compact assembly.
  • the present invention relates to a filter device for an electric drive system.
  • the filter device is provided to filter electrical interference signals such as can occur during the operation of the electrical drive system.
  • part of the filter device is designed together with a converter of the electrical drive system as an assembly and another part of the filter device is provided as a separate assembly.
  • the two parts of the filter device for filtering the interference signals are connected to one another via shielded connections, such as, for example, coaxial cables.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Conversion In General (AREA)
  • Control Of Electric Motors In General (AREA)

Abstract

La présente invention concerne un dispositif de filtration pour un système d'entraînement électrique. Le dispositif de filtration est destiné à filtrer des signaux électriques brouilleurs, tels qu'ils peuvent se produire pendant le fonctionnement du système d'entraînement électrique. A cet effet, il est prévu de réaliser une partie du dispositif de filtration conjointement avec un convertisseur du système d'entraînement électrique sous la forme d'un module et de prévoir une autre partie du dispositif de filtration sous la forme d'un module séparé. Les deux parties du dispositif de filtrage pour filtrer les signaux brouilleurs sont reliées l'une à l'autre par des connexions blindées, par exemple des câbles coaxiaux.
PCT/EP2020/068987 2019-09-03 2020-07-06 Dispositif de filtration pour un système d'entraînement électrique WO2021043460A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019213296.0A DE102019213296A1 (de) 2019-09-03 2019-09-03 Filtervorrichtung für ein elektrisches Antriebssystem
DE102019213296.0 2019-09-03

Publications (1)

Publication Number Publication Date
WO2021043460A1 true WO2021043460A1 (fr) 2021-03-11

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ID=71465364

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PCT/EP2020/068987 WO2021043460A1 (fr) 2019-09-03 2020-07-06 Dispositif de filtration pour un système d'entraînement électrique

Country Status (2)

Country Link
DE (1) DE102019213296A1 (fr)
WO (1) WO2021043460A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010029461A1 (de) * 2009-07-16 2011-02-03 GM Global Technology Operations, Inc., Detroit Gleichstromquellen-Anordnungen
DE102010056008A1 (de) * 2010-12-23 2012-06-28 Volkswagen Ag Vorrichtung und Verfahren zur elektrischen Kontaktierung
EP2905888A1 (fr) * 2014-02-05 2015-08-12 Grundfos Holding A/S Onduleur
DE102015224872A1 (de) 2015-12-10 2017-06-14 Te Connectivity Germany Gmbh Filterbaugruppe für Hochvoltverbinderanordnung und Hochvoltverbinderanordnung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010029461A1 (de) * 2009-07-16 2011-02-03 GM Global Technology Operations, Inc., Detroit Gleichstromquellen-Anordnungen
DE102010056008A1 (de) * 2010-12-23 2012-06-28 Volkswagen Ag Vorrichtung und Verfahren zur elektrischen Kontaktierung
EP2905888A1 (fr) * 2014-02-05 2015-08-12 Grundfos Holding A/S Onduleur
DE102015224872A1 (de) 2015-12-10 2017-06-14 Te Connectivity Germany Gmbh Filterbaugruppe für Hochvoltverbinderanordnung und Hochvoltverbinderanordnung

Also Published As

Publication number Publication date
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