WO2014060513A1 - Agencement de circuit de protection et procédé de protection d'un appareillage électrique, ainsi que dispositif équipé du circuit à protéger et de l'agencement de circuit de protection - Google Patents

Agencement de circuit de protection et procédé de protection d'un appareillage électrique, ainsi que dispositif équipé du circuit à protéger et de l'agencement de circuit de protection Download PDF

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Publication number
WO2014060513A1
WO2014060513A1 PCT/EP2013/071722 EP2013071722W WO2014060513A1 WO 2014060513 A1 WO2014060513 A1 WO 2014060513A1 EP 2013071722 W EP2013071722 W EP 2013071722W WO 2014060513 A1 WO2014060513 A1 WO 2014060513A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
control
current path
circuit arrangement
signal
Prior art date
Application number
PCT/EP2013/071722
Other languages
German (de)
English (en)
Inventor
Paul Gruber
Original Assignee
Dspace Digital Signal Processing And Control Engineering 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 Dspace Digital Signal Processing And Control Engineering Gmbh filed Critical Dspace Digital Signal Processing And Control Engineering Gmbh
Publication of WO2014060513A1 publication Critical patent/WO2014060513A1/fr

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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
    • H02H3/20—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 voltage
    • H02H3/202—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 voltage for dc systems
    • 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
    • H02H3/20—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 voltage
    • H02H3/207—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 voltage also responsive to under-voltage

Definitions

  • the invention relates to a protective circuit arrangement for protecting an electrical circuit device from the occurrence of errors of different types of errors.
  • fault types are fault types from a group of faults including the following faults: (i) fault voltage (over or under voltage), (ii) short circuit, and (iii) overcurrent on a circuit of the protection circuitry through which the circuit is supplied with electrical energy.
  • at least one openable and closable switch is arranged in the current path, which can be actuated by means of control signals via a corresponding control input.
  • the protection circuitry further includes means for detecting the errors and outputting corresponding control signals.
  • the invention further relates to a corresponding method for protecting an electrical circuit device from the occurrence of errors and a device, in particular simulation, control and / or regulating device with a circuit device to be protected and a corresponding protective circuit arrangement.
  • circuit arrangements for protecting the actual circuit device of an electrical device are known. These have corresponding means which detect the errors and lead via different control signal paths to an interruption of the supply path.
  • the at least one switch is actuated only by the means for detecting overcurrent faults via the control input.
  • Means for detecting a fault of another type of fault provides a different way of interrupting the supply path.
  • Such a circuit arrangement is arbitrarily complicated and confusing.
  • the invention has for its object to provide a simple and safe protective circuit arrangement, a corresponding method and a corresponding device with such a protective circuit arrangement.
  • control signals for at least two of the types of errors are designed as control signals for outputting to the control input from a standard error type-independent control signal type.
  • a uniform control signal type results for a plurality of types of errors.
  • control signal (s) opens / ends in a "common action path" for the "further processing" by the at least one switch.
  • the protective circuit arrangement also protects the corresponding electrical energy source (current or voltage source) by opening the switch / disconnecting the connection in the current path.
  • two switches designed as transistors are provided, which are arranged in the current path in an electrically opposite direction to one another and have a common control input.
  • the electrically opposite alignment of the two transistors, that is to say their source-drain alignment, within the current path ensures that at least one of the two transistors reliably blocks the current path (in the sense of an opened switch) with appropriate wiring via the common control input.
  • the control signal is preferably a control voltage.
  • the at least one transistor is particularly preferably designed as a MOSFET (metal oxide semiconductor field effect transistor).
  • control signal is a control voltage.
  • This control voltage is preferably a negative control voltage, as far as the switch (s) is / are designed as a "normally-off" p-channel MOSFET If a fault of this type of fault exists (regardless of whether the fault is now an overvoltage, an overcurrent, an undervoltage, etc.), therefore, such a uniform control signal is always generated in the form of a transistor control voltage (gate-source voltage) for the at least one field-effect transistor in the protective circuit arrangement.
  • a shunt resistor is further arranged in the current path, which forms the means for detecting an overcurrent error and for outputting the control signal from the uniform signal type to the control input together with a downstream monitoring circuit.
  • a current above a predetermined threshold that is, an overcurrent, drops at the shunt resistor a voltage which is applied by the monitoring circuit in a corresponding (negative) voltage at the Control input is compared with the current path is implemented. This is the control signal of the error type independent uniform control signal type.
  • the invention provides that form a in a cross-current path between the current path and control input transistor together with a circuit connecting this transistor, the means for detecting the fault voltage, in particular an overvoltage, is formed at a corresponding overvoltage of the cross path co-forming emitter collector Current path or source-drain current path of the transistor through the wiring conductive.
  • the at least one switch in a state in which it is not controlled by the control signal (uncontrolled state) is open and interrupts the current path. If the switch is designed as a transistor, then it is a "normally blocking" transistor.
  • the protective circuit arrangement further comprises a circuit part which can close the at least one switch in response to an input signal to the circuit part in the uncontrolled state.
  • the input signal may also be referred to as an enable signal and is preferably a digital input signal.
  • this circuit part is further configured to output the digital input signal (enable signal) and optionally additionally an inverted input signal (inverted enable signal) to the electrical circuit device.
  • the circuit part has suitable outputs and means for inverting the input signal.
  • the protective circuit arrangement has a further circuit part for distinguishing an undervoltage from a desired (sufficient) voltage on the current path, the further circuit part for outputting a status signal (CHL_OK). forming output signal, in particular digital output signal, in response to a detected desired (sufficient) voltage is formed.
  • Protection circuit further comprises a control logic circuit which is adapted to output the digital input signal (enable signal) in response to the output signal (status signal) of the further circuit part.
  • the control logic circuit is also set up to output further digital signals as a function of the output signal of the further circuit part. These further digital signals can be used, for example, by the circuit device.
  • the invention is further based on a method for protecting an electrical circuit device by means of a protective circuit arrangement before the occurrence of errors of different types of errors.
  • fault types are fault types from a group of faults including the following faults: (i) fault voltage (overvoltage or undervoltage), (ii) short circuit and (iii) overcurrent on a current path through which the circuit device is supplied with electrical energy, wherein optionally interrupting or releasing the current path at least one openable and closable switch, in particular field effect transistor, is arranged in the current path, which is actuated via a corresponding control input by means of control signals. In this case, corresponding control signals are output when errors are detected.
  • control signals for at least two of the fault types are designed as control signals of a fault-independent uniform control signal type and are output to the control input, wherein a transistor connected in a cross-current path between the current path and the control input together with a circuit connecting this transistor forms the means for detecting form an overvoltage, and wherein, in the presence of an overvoltage, the control signal in the form of a transistor control voltage, namely a gate-source voltage, for at least one designed as a MOSFET transistor switch in the protective circuit arrangement is generated.
  • the invention also relates to a device, in particular a simulation, control and / or regulating device with a circuit device to be protected and a protective circuit arrangement mentioned above.
  • the o.g. Faulty voltage (especially the undervoltage) can be caused in practice, for example, by an impermissibly low supply voltage of the electrical energy source.
  • Another practical cause for a faulty voltage may be a reverse polarity fault, which has arisen during construction or startup of the circuit device or protective circuit arrangement.
  • the circuit device to be protected has a digital output which alternatively has one of the states logic zero, logic one and a high-impedance state (so-called tri-state output).
  • the circuit device to be protected is designed as an output driver circuit or has an output driver circuit. This output driver circuit then has the digital output.
  • circuit device comprises means by means of which the digital output of the circuit device in response to the further digital signals in the high-impedance state is displaceable.
  • Fig. 1 shows the circuit diagram of a protective circuit arrangement for protecting a circuit device according to a preferred embodiment of the invention
  • FIG. 2 shows the circuit diagram of a device with a circuit device to be protected and the protective circuit arrangement according to FIG. 1, wherein the device can be used as a simulation and / or control and / or regulating device, or the device of a simulation and / or control and / or control device is included.
  • FIG. 1 shows the circuit diagram of a protective circuit arrangement 10 for protecting an electrical circuit device 12 (shown in FIG. 2) from the occurrence of disturbances. These faults manifest themselves in faults of different fault types that can be detected in a current path 14 (supply current path) for supplying the circuit device 12 with electrical energy.
  • This current path 14 is - at least partially - part of the protective circuit arrangement 10.
  • the protective circuit arrangement 10 has a plurality of means 16, 18, 20 for detecting the errors and for outputting corresponding control signals.
  • the protective circuit arrangement 10 furthermore has two openable and closable switches 22, 24, which are arranged in the current path 14 and each have a control input 26.
  • the switches 22, 24 are each formed as a transistor, more precisely each as a field effect transistor, which are connected to their source and drain terminals in the current path 14.
  • the control inputs 26 of the switches 22, 24 designed as field-effect transistors are the respective gate terminals. These two control inputs 26 are electrically conductively connected to each other by an electrical connection 28 and therefore have the same electrical potential.
  • the switches 22, 24 thus practically have a common control input 26.
  • the two transistors 22, 24 formed as transistors, with their source and drain terminals in the current path 14 are electrically opposite to each other arranged aligned.
  • This electrically opposite orientation of the two transistors within the current path 14 ensures that at any one polarity of at least one of the two transistors with a corresponding Be circuit via the common control input 26 blocks reliably and thus the current path 14 interrupts.
  • the electrically opposite orientation is particularly well visible in the (replacement) circuit diagram by the opposite orientation of the diodes in the field effect transistors 22, 24.
  • the control signal is preferably a control voltage in the case of the switches 22, 24 designed as field-effect transistors.
  • a Shuntwi- resistance 30 is arranged, which together with a shunt resistor 30 downstream monitoring circuit 32 means 16 for detecting an overcurrent error and for outputting the control signal from the uniform signal type to the control input 26th forms.
  • a current above a predetermined threshold ie a so-called overcurrent, drops across the shunt resistor 30 a voltage which is tapped by the monitoring circuit and converted into a corresponding (negative) voltage at the control input with respect to the current path 14.
  • This voltage is the control signal of the error-type-independent uniform control signal type. In the example shown, it is about -5V.
  • the monitoring circuit 32 is known in many variants. Therefore, the individual components of the circuit 32 should not be discussed explicitly.
  • the current path 14 with the switches 22, 24 and the shunt resistor 30 and the remaining components of the means 16 for detecting an overcurrent error are indicated in the figures as circuit part A.
  • the emitter-collector current path (or source-drain current path) forming the transverse path 34 of the transistor 36 becomes conductive through the connection via the diodes 40. This reduces the amount of (negative) voltage at the control input 26 and the electrical connection 28 with respect to the current path 14.
  • the means 18 also outputs a control signal from the error-type independent control signal type to the common control input 26 of the transistors 22, 24
  • This part of the protective circuit arrangement 10 is identified in the figures as circuit part B.
  • the switches 22, 24 could be conductive in the normal state and thus enable the current path without a connection.
  • the two switches 22, 24 formed as transistors are in the state in which they are not controlled by a control signal (ie in the uncontrolled state) blocking, so that the current path 14 is interrupted.
  • the acting as a switch 22, 24 transistors of this embodiment are thus "normal blocking" transistors.
  • the protective circuit arrangement 10 furthermore has a circuit part 42 which switches the switches 22, 24 in response to an enable signal (enable signal) at its input 44 close in the uncontrolled state.
  • the enable signal is preferably a digital input signal of the circuit part 42, which is identified in the figures as circuit part J. is drawing.
  • this circuit part 42 is further configured to output the digital input signal (enable signal) and optionally additionally an inverted input signal (inverted enable signal) to the electrical circuit device 12.
  • the circuit part 42 has suitable outputs 45 and means for inverting the input signal.
  • the protective circuit arrangement 10 has a further circuit part 46 for distinguishing an undervoltage from a desired (sufficient) voltage on the current path 14, the further circuit part for outputting a digital output signal (status signal CHL_OK) depending on a detected desired (sufficient) voltage an output 48 is set up.
  • This further circuit part 46 is an analog circuit part (with transistors, diodes and resistors), which is characterized in the figures as circuit part C.
  • this further circuit part limits the amount of the gate-source voltage in that this amount does not exceed a predefined maximum amount of the gate-source voltage in the conductive state of the MOSFET configured switch / s 22 and / or 24.
  • the further circuit part 46 is thus preferably provided and configured to "on the one hand” the occurrence of said error via level change (the status signal CHL_OK, which is preferably a digital signal) at the output 48 of the other circuit part 46 to the control logic circuit 50, and on the other hand, to protect the MOSFET (s).
  • the status signal CHL_OK which is preferably a digital signal
  • the protective circuit arrangement 10 has a control logic circuit 50 (Ctrl) which is set up for outputting the digital enable signal for the circuit part 42 as a function of the output signal (status signal CHL_OK) of the further circuit part 46 at an output 52.
  • the output signal (status signal CHL_OK) of the further circuit part 46 is applied to an input 54 of the control logic circuit 50.
  • the output 48 of the further circuit part 46 is connected to the input 54 of the control logic circuit 50 signal technically connected or signal technology.
  • To output the digital enable or enable signal (Enable) for the circuit part 42 of the output 52 of the control logic circuit 50 with the input 44 of the circuit part 42 signal-technically connectable or connected by signal technology.
  • the control logic circuit 46 preferably includes an FPGA (Field Programmable Gate Array) device or is fully implemented in an FPGA.
  • the control logic circuit 50 is also set up to output further digital signals HS, LS as a function of the output signal (status signal CHL_OK) of the further circuit part 46 at further outputs 56, 57. These further digital signals can, for example, be transferred to inputs 58, 59 of the circuit device 12 and then used by them.
  • the part of the protective circuit arrangement 10 with the control logic circuit 50 is identified as circuit part G in the figures.
  • the interconnected via signal lines components circuit part 42, further circuit part 46 and the control logic circuit 50 together form the means 20 for detecting an undervoltage.
  • FIG. 2 shows the circuit diagram of a device 60 with the circuit device 12 to be protected and the protective circuit arrangement 10.
  • the device 60 shown is designed, for example, as a simulation or control or regulating device. Alternatively, the device 60 may be used as part of a simulation or control device.
  • the circuit device 12 of this device 60 is designed as an output driver circuit and has a digital output (digital output) 62, wherein the internal structure of the protective circuit arrangement 10 to be protected circuit device 12 should not be discussed in more detail.
  • the current path 14 of the protective circuit arrangement 10 is part of the overall current path between an electrical energy source 64 (current or voltage source) and the circuit device 12.
  • the digital output 62 of the circuit device 12 may alternatively have one of the states (a) logic zero, (b) logic one and (c) a high impedance state.
  • the circuit device 12 has means (not shown) by means of which the digital output 62 of the circuit device 12 in response to the other digital signals from the control logic circuit 50 in the high-impedance Condition is displaceable.
  • a device (not shown) connected to this digital output can be virtually disconnected from the device 60 in the event of a detected error (error).
  • error error
  • This level change and / or an interface signal IF present at a further input 66 of the control logic circuit 50 is "processed" by the control logic circuit 50 in such a way that a further level change is caused at the inputs 58, 59 of the circuit device 12 by means of this control logic circuit 50, whereby level change the digital output 62 of the switching device 12 is placed in the high-resistance state.
  • the protection circuitry 10 (A, B, C, J, possibly G) according to a variety of embodiments of the invention is different from the prior art in that the protection circuitry 10 protects a circuit device 12 (such as an output digital driver circuit) ) is provided, wherein
  • Errors / errors of multiple types of errors result in the generation of at least one common control signal, and the modified control signal (s) in one
  • the blocking of the transistor 22, 24 is accompanied by the generation of a first state (eg a logic zero) of the status signal (CHL_OK, which means “channel OK” or “channel not OK” depending on the logic level), that of the control logic circuit 50, wherein the first transistor 22, 24 becomes conductive when there is no interference, and the conductive state of the first transistor 22, 24 is associated with the generation of a second state (eg, a logic one) of the status signal (CHL_OK), the one Control logic circuit 50 can be fed.
  • a first state eg a logic zero
  • the transistor (s) 22, 24 in the conducting state preferably connects a supply voltage terminal (VBAT) to an output driver circuit for a digital output 62 (also referred to as DIGOUT) of the circuit device 12 (see FIG. 2).
  • VBAT supply voltage terminal
  • DIGOUT digital output 62
  • the protective circuit arrangement 10 (A, B, C, G, J) on the one hand, the following circuit means 12 is protected and on the other hand, the source 64 of the supply voltage (VBAT) and other circuits (not shown in the figures) connected to the digital output 62 (DIGOUT) of the output driver circuit are connected.
  • the control logic circuit 50 outputs the high-level signal, "high-side signal”, (HS) and / or the low-level signal, "low-side signal”. , (LS) and thus ultimately the high level or the low level at the digital output 62 (DIGOUT) of the circuit device 12.
  • Input (control logic circuit) 54 further output (control logic circuit) 56 further output (control logic circuit) 57

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  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un agencement de circuit (10) servant à protéger un appareillage électrique (12) contre la survenue de défauts de divers types choisi dans le groupe comprenant les types de défauts suivants : - défaut de tension, en particulier surtension, - courant de court-circuit et surintensité dans un trajet de courant (14) de l'agencement de circuit de protection (10) par le biais duquel l'appareillage (12) est alimenté en énergie électrique. Pour interrompre ou libérer au choix le trajet de courant (14), au moins un interrupteur (22, 24) qui peut être ouvert et fermé et qui peut être actionné au moyen de signaux de commande par le biais d'une entrée de signal (26) correspondante est disposé dans le trajet de courant (14), l'agencement de circuit de protection (10) comportant des moyens (16, 18, 20) pour détecter les défauts et pour délivrer des signaux de commande correspondants. Selon l'invention, les signaux de commande pour au moins deux des types de défauts destinés à être délivrés en tant que signaux de commande à l'entrée de signal (26) sont constitués d'un type de signal de commande uniforme dépendant du type de défaut. L'invention concerne en outre un procédé correspondant de protection d'un appareillage électrique (12) contre la survenue de défauts, ainsi qu'un dispositif (60), en particulier un dispositif de simulations, de commande et/ou de réglage équipé de l'appareillage (12) à protéger et de l'agencement de circuit de protection (10) correspondant. (Fig. 1)
PCT/EP2013/071722 2012-10-19 2013-10-17 Agencement de circuit de protection et procédé de protection d'un appareillage électrique, ainsi que dispositif équipé du circuit à protéger et de l'agencement de circuit de protection WO2014060513A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012109979.0 2012-10-19
DE102012109979.0A DE102012109979A1 (de) 2012-10-19 2012-10-19 Schutzschaltungsanordnung und Verfahren zum Schutz einer elektrischen Schaltungseinrichtung sowie Vorrichtung mit der zu schützenden Schaltung und der Schutzschaltungsanordnung

Publications (1)

Publication Number Publication Date
WO2014060513A1 true WO2014060513A1 (fr) 2014-04-24

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PCT/EP2013/071722 WO2014060513A1 (fr) 2012-10-19 2013-10-17 Agencement de circuit de protection et procédé de protection d'un appareillage électrique, ainsi que dispositif équipé du circuit à protéger et de l'agencement de circuit de protection

Country Status (2)

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DE (1) DE102012109979A1 (fr)
WO (1) WO2014060513A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2978090A1 (fr) * 2014-07-24 2016-01-27 Helmut-Schmidt-Universität Dispositif de protection pour des reseaux d'alimentation en energie electrique, source d'energie, reseau d'alimentation en energie et utilisation d'un tel dispositif de protection
CN106980273A (zh) * 2016-01-19 2017-07-25 帝斯贝思数字信号处理和控制工程有限公司 仿真装置和用于仿真的方法

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE10349282A1 (de) * 2003-10-23 2005-05-25 Hella Kgaa Hueck & Co. Verpol- und Überspannungsschutz für 5V-Sensoren
US20070103834A1 (en) * 2005-11-07 2007-05-10 Chun-Wei Huang Circuit for charging protection with enhanced overcurrent protection circuitry

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
US7372685B2 (en) * 2003-05-20 2008-05-13 On Semiconductor Multi-fault protected high side switch with current sense
DE102004007208B3 (de) * 2004-02-13 2005-05-25 Infineon Technologies Ag Schaltungsanordnung mit einem Lasttransistor und einer Spannungsbegrenzungsschaltung und Verfahren zur Ansteuerung eines Lasttransistors
JP5719627B2 (ja) * 2011-02-22 2015-05-20 ローム株式会社 地絡保護回路及びこれを用いたスイッチ駆動装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10349282A1 (de) * 2003-10-23 2005-05-25 Hella Kgaa Hueck & Co. Verpol- und Überspannungsschutz für 5V-Sensoren
US20070103834A1 (en) * 2005-11-07 2007-05-10 Chun-Wei Huang Circuit for charging protection with enhanced overcurrent protection circuitry

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2978090A1 (fr) * 2014-07-24 2016-01-27 Helmut-Schmidt-Universität Dispositif de protection pour des reseaux d'alimentation en energie electrique, source d'energie, reseau d'alimentation en energie et utilisation d'un tel dispositif de protection
CN106980273A (zh) * 2016-01-19 2017-07-25 帝斯贝思数字信号处理和控制工程有限公司 仿真装置和用于仿真的方法
CN106980273B (zh) * 2016-01-19 2021-07-13 帝斯贝思数字信号处理和控制工程有限公司 仿真装置和用于仿真的方法

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