EP4578076A1 - Appareil et procédé de conditionnement d''énergie électrique fournie à une charge - Google Patents

Appareil et procédé de conditionnement d''énergie électrique fournie à une charge

Info

Publication number
EP4578076A1
EP4578076A1 EP23783438.7A EP23783438A EP4578076A1 EP 4578076 A1 EP4578076 A1 EP 4578076A1 EP 23783438 A EP23783438 A EP 23783438A EP 4578076 A1 EP4578076 A1 EP 4578076A1
Authority
EP
European Patent Office
Prior art keywords
current
mirror
power
conditioning apparatus
load
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
EP23783438.7A
Other languages
German (de)
English (en)
Inventor
Philipp Steinberger
Bernhard Först
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.)
Future Systems Besitz GmbH
Original Assignee
Future Systems Besitz 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 Future Systems Besitz GmbH filed Critical Future Systems Besitz GmbH
Publication of EP4578076A1 publication Critical patent/EP4578076A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/085—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current making use of a thermal sensor, e.g. thermistor, heated by the excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for DC applications
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/44—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the rate of change of electrical quantities
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/008—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for protective arrangements according to this subclass

Definitions

  • the invention relates to a power conditioning apparatus and a method for conditioning electrical power supplied by said power conditioning apparatus to a connected electrical load .
  • a connected electrical load may comprise di f ferent operation modes requiring adaption or conditioning of the supplied electrical power .
  • Conventional electrical protection devices can employ current sensors to measure an electrical current flowing to the connected load to detect a critical situation and to trigger automatically an electronic or electromechanical switch in case that such a critical situation is detected .
  • a current measurement element such as a Hall sensor may measure the electrical current and supply corresponding measurement values to an integrated controller which can switch of f matching components of the protection device in case that the measured cur- rent values exceed a predetermined threshold value .
  • Some conventional protection devices use semiconductor switches such as MOSFETs to protect connected loads against overcurrents or against overload .
  • This obj ect is achieved according to a first aspect of the present invention by a power conditioning apparatus comprising the features of claim 1 .
  • the invention provides according to a first aspect a power conditioning apparatus for conditioning an electrical power supplied by said power conditioning apparatus to a connected electrical load, said power conditioning apparatus comprising : an input terminal , an output terminal , a semiconductor switching stage through which the connected load receives a load current and a current mirror evaluation circuit .
  • the output terminal is configured to be connected to the load .
  • the semiconductor switching stage comprises two power switches .
  • the two power switches are arranged in series between the input terminal and the output terminal .
  • the two power switches are arranged such that the power switches have opposite orientations .
  • Each power switch comprises a current mirror circuit .
  • the current mirror circuits are adapted to mirror the load current through the related power switch . Accordingly, each current mirror circuit generates a mirror current , respectively .
  • the current mirror evaluation circuit is adapted to evaluate the generated mirror currents .
  • the semiconductor switching stage is controlled in response to the evaluated mirror currents to condition the electrical power supplied to the connected load .
  • the expression " in opposite directions” may be understood such that a drain or emitter of a first power switch is coupled with the input terminal , and a drain or emitter of a second power switch is coupled with the output terminal .
  • the sources or collectors of the two power switches may be connected to ( or : with) each other .
  • the body diodes of the power switches are oriented in opposite directions . In this way, a reliable electrical isolation can be achieved by the power switches , regardless of the polarity of the electrical voltage at the input terminal .
  • the first sensor component of the current mirror evaluation circuit comprises a measurement coil .
  • the measurement coil may be adapted to generate the induction voltage corresponding to the current rise speed, dl /dt , of the mirror current generated by said current mirror circuit . In this way, variations of the current over time can be easily identi fied .
  • ISO-1 block in Fig. 8 is a galvanic isolation unit for signals from the low voltage side of the driver circuit 9 towards the high voltage side of the driver circuit 9.
  • the ISO- 1 block can be implemented by photo-couplers or small trans- formers .
  • An on/of f command for the gates of the MOSFETs given by the microcontroller 50 is shi fted at the ISO- 1 block from the low voltage side to the high voltage side of the driver circuit 9 .
  • the method may be applied to a power condition apparatus 1 as described above .
  • the following method may comprise any appropriate method steps to perform an operation as already described above in connection with the power condition apparatus 1 .
  • the above-described power condition apparatus 1 may comprise any appropriate element , unit or device in order to perform the method as described in the following .
  • a load current I L flowing through a semiconductor switching stage 5 to the load 4 is mirrored to generate a mirror current I M .
  • the semiconductor switching stage 5 may comprise two power switches 8- 1 , 8- 2 arranged in series between an input terminal 2 and an output terminal 3 connected to the load 4 .
  • the two power switches 8- 1 , 8-2 have opposite orientations .
  • Each power switch 8- 1 , 8-2 comprises a current mirror circuit 6- 1 , 6-2 .
  • the current mirror circuits 6- 1 , 6-2 are adapted to mirror the load current , I L , through the related power switch 8- 1 , 8-2 . Accordingly a mirror current I M is generated .
  • the semiconductor switching stage 5 is controlled by the current mirror evaluation circuit 7 depending on the evaluated mirror currents I M to condition the electrical power supplied to the connected load 4 .
  • the power conditioning apparatus 1 can be provided between a power sup- ply system and a load 4 .
  • the power supply system can comprise an AC power supply system comprising one or more AC power supply phases .
  • the power conditioning apparatus 1 can also in a possible embodiment be integrated on the input side of an electrical load 4 being connected to a power supply system .
  • the power conditioning apparatus 1 can in a possible embodiment comprise additional entities , in particular a user interface with a display unit adapted to display a momentary state of the semiconductor switching stage 5 , i . e . whether the power supply path is interrupted or not . Further, in a possible embodiment , the threshold values used by the comparator integrated in the driver circuit 9 can be adj usted via the user interface of the power conditioning apparatus 1 . In this way, it is possible to adj ust the sensitivity of the power conditioning apparatus 1 to the respective use case .
  • the user interface can be connected to a local controller of the power conditioning apparatus 1 .
  • This local controller can be connected to a low voltage side of the driver circuit 9 .
  • the local controller can in a possible embodiment comprise a data memory and a configuration memory .
  • the mirrored current applied to the current mirror evaluation circuit 7 is also digiti zed by an analog to digital converter ADC to provide mirror current data samples stored in the data memory of the local controller for further processing .
  • the power supply path comprises besides the semiconductor switching stage 5 also a serially connected electromechanical stage having a relay controlled by the local controller of the power protection apparatus 1 .
  • the mirrored current is evaluated by the hardwired current mirror evaluation circuit 7 of the power protection apparatus 1 to provide a fast reaction to events or faults such as overcurrent or overload or to provide a fast reaction to changing power supply conditions .
  • the digiti zed mirrored current is at the same time in parallel evaluated by the local controller comprising a microcontroller 50 to provide additional safety, in particular i f the current mirror evaluation circuit 7 itsel f fails .
  • the mirror current I M can be digiti zed by an analog to digital converter ADC and mirror current samples provided by the ADC can be stored in a data memory of the microcontroller 50 .
  • the local microcontroller 50 can switch of f the MOSFETs 8- 1 , 8-2 of the power supply path i f the monitored digiti zed mirrored current exceeds a threshold value .
  • the si ze of the sensor components used in the current mirror evaluation circuit 7 can be very small thus allowing to miniaturi ze the power conditioning apparatus 1 . Further, the power dissipated by the measurement components is minimal because of their small si ze .
  • the power supply path is set up with an absolutely minimal amount of components .
  • the load current I L flowing to the load 4 during normal operation of the power condition apparatus 1 may comprise more than 10 Ampere .

Landscapes

  • Power Conversion In General (AREA)

Abstract

La présente invention concerne un appareil de conditionnement de puissance pour conditionner de l'énergie électrique fournie à une charge. Le conditionnement de puissance est effectué en réponse à un courant de charge en miroir circulant à travers l'appareil de conditionnement de puissance vers la charge. L'approche est effectuée par des éléments matériels individuels dans un trajet de courant du courant miroir. Ainsi, une réponse très rapide aux changements du courant de charge peut être obtenue sans impact significatif sur le courant dans le trajet du courant de charge.
EP23783438.7A 2022-10-04 2023-10-04 Appareil et procédé de conditionnement d''énergie électrique fournie à une charge Pending EP4578076A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22199495.7A EP4350917A1 (fr) 2022-10-04 2022-10-04 Appareil et procédé de conditionnement d'une puissance électrique fournie à une charge
PCT/EP2023/077501 WO2024074581A1 (fr) 2022-10-04 2023-10-04 Appareil et procédé de conditionnement d''énergie électrique fournie à une charge

Publications (1)

Publication Number Publication Date
EP4578076A1 true EP4578076A1 (fr) 2025-07-02

Family

ID=83594305

Family Applications (2)

Application Number Title Priority Date Filing Date
EP22199495.7A Withdrawn EP4350917A1 (fr) 2022-10-04 2022-10-04 Appareil et procédé de conditionnement d'une puissance électrique fournie à une charge
EP23783438.7A Pending EP4578076A1 (fr) 2022-10-04 2023-10-04 Appareil et procédé de conditionnement d''énergie électrique fournie à une charge

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP22199495.7A Withdrawn EP4350917A1 (fr) 2022-10-04 2022-10-04 Appareil et procédé de conditionnement d'une puissance électrique fournie à une charge

Country Status (2)

Country Link
EP (2) EP4350917A1 (fr)
WO (1) WO2024074581A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4288590B2 (ja) * 2003-12-02 2009-07-01 富士電機デバイステクノロジー株式会社 双方向スイッチの電流検出回路
DE102016209354A1 (de) * 2016-05-30 2017-11-30 Bayerische Motoren Werke Aktiengesellschaft Vorrichtung zum schutz eines elektrischen netzes in einem fahrzeug sowie bordnetz und fahrzeug
JP6722101B2 (ja) * 2016-12-27 2020-07-15 ルネサスエレクトロニクス株式会社 半導体装置および過電流保護装置
US10763662B2 (en) * 2017-10-10 2020-09-01 Littelfuse, Inc. Self-powered electronic fuse
EP3654477A1 (fr) * 2018-11-15 2020-05-20 Siemens Aktiengesellschaft Commutateur électronique à protection contre les surtensions
DE102020105094A1 (de) * 2020-02-27 2021-09-02 Infineon Technologies Ag Intelligenter halbleiterschalter
EP3944438A1 (fr) * 2020-07-23 2022-01-26 Future Systems Besitz GmbH Procédé et appareil pour la protection d'une charge électrique contre la surtension

Also Published As

Publication number Publication date
WO2024074581A1 (fr) 2024-04-11
EP4350917A1 (fr) 2024-04-10

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