EP3900184A1 - Schaltungsanordnung zum übertragen eines steuersignals, stromrichter und fahrzeug - Google Patents
Schaltungsanordnung zum übertragen eines steuersignals, stromrichter und fahrzeugInfo
- Publication number
- EP3900184A1 EP3900184A1 EP19813817.4A EP19813817A EP3900184A1 EP 3900184 A1 EP3900184 A1 EP 3900184A1 EP 19813817 A EP19813817 A EP 19813817A EP 3900184 A1 EP3900184 A1 EP 3900184A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit arrangement
- switching
- voltage
- potential
- line
- 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.)
- Withdrawn
Links
- 230000006870 function Effects 0.000 claims abstract description 32
- 239000003990 capacitor Substances 0.000 claims abstract description 17
- 230000000295 complement effect Effects 0.000 claims abstract description 6
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 12
- 230000005669 field effect Effects 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/06—Modifications for ensuring a fully conducting state
- H03K17/063—Modifications for ensuring a fully conducting state in field-effect transistor switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/16—Modifications for eliminating interference voltages or currents
- H03K17/168—Modifications for eliminating interference voltages or currents in composite switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/04—Modifications for accelerating switching
- H03K17/041—Modifications for accelerating switching without feedback from the output circuit to the control circuit
- H03K17/0412—Modifications for accelerating switching without feedback from the output circuit to the control circuit by measures taken in the control circuit
- H03K17/04123—Modifications for accelerating switching without feedback from the output circuit to the control circuit by measures taken in the control circuit in field-effect transistor switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0081—Power supply means, e.g. to the switch driver
Definitions
- Circuit arrangement for transmitting a control signal, converter and vehicle
- the present invention relates to a circuit arrangement for transmitting egg NES control signal from an input of the circuit arrangement to a functional element of the circuit arrangement, comprising a first supply line for a first potential, a second supply line for a second potential different from the first potential, a switching line which alternately with the first supply line and the second supply line can be connected, where the functional element has a control input and a capacitance between the control input and the switching line.
- the invention relates to a power converter and a vehicle.
- Such circuit arrangements are known, for example, in the case of gate drivers for power converters, a gate of a power semiconductor switching element of the power converter being connected to the switching line of the circuit arrangement.
- a series circuit comprising a functional element in the form of a MOSFET having a gate-source capacitance and a further resistor is connected in parallel to a gate series resistor in the switching line.
- the gate series resistor and the further resistor result in a lower total resistance, which increases the switching speed of the power semiconductor switching element compared to a deactivated switching state of the functional element in which only the gate series resistor is effective.
- an additional voltage source is conventionally provided which is sufficient for both potentials provides high switching voltages for activating and deactivating the functional element regardless of the potential of the switching line at the control input and is switched to the control input depending on the control signal.
- the additional voltage source causes a high outlay in terms of circuitry and components in such a circuit arrangement.
- the invention is therefore based on the object of specifying a less expensive possibility for controlling a functional element on a switching line with changing potentials.
- the invention is based on the consideration of charging the capacity to one of the target voltages in accordance with the signal state of the control signal whenever the switching line is on a suitable one for reaching the target voltage which is at the potentials. This takes place when the first signal state is present via the first supply line lying at the first potential when the switching line is at the second potential, and when the second signal state is present via the second supply line lying at the second potential when the switching line is at the first Potential lies. If the switching line is at the other potential, there is at least a limitation of the discharge current flow, so that the voltage drop across the capacitance does not reach the voltage interval. The capacitance can thus be brought to the respective target voltage in order to provide a voltage at the control input of the functional element which, regardless of which supply line is connected to the switching line, can clearly follow the signal state at the input.
- a transmission of the control signal on the input side to the functional element is achieved without having to provide an additional voltage source. This lowers the circuit and component complexity of the circuit arrangement compared to conventional circuit arrangements and reduces their manufacturing costs.
- the first potential is higher than the second potential.
- the switching line can be connected or connected to a driver unit for switching the supply lines to the switching line.
- the functional element can be set up to perform the functions as a function of the voltage drop across the capacitance or between the control input and the switching line.
- the functions of the functional element can be switching functions, that is to say switching the functional element on and off.
- the first voltage threshold is higher than the second voltage threshold.
- the circuit arrangement according to the invention is particularly preferably designed to suppress the discharge current flow when a respective signal state is present. It therefore becomes available during the presence of a each signal state, a particularly stable voltage over the capacitance is sufficient. As a result, the target voltages can be provided in a particularly stable or "clean" manner at the control input of the functional element. As a result, the voltage across the capacitance can be kept longer, which is particularly expedient if there is an operating state in which a potential change on the switching line for a long time - for example in the order of a few seconds - is omitted and the capacitance is accordingly not reloaded for a long time .
- the circuit arrangement according to the invention can, as will be described in more detail below, have one or more switching devices.
- the or a respective switching device can have a control connection and a switching path between a first and a second connection of the switching device.
- the switching path can be controlled as a function of a voltage difference between the control connection and the second connection.
- the switching device is formed, for example, by a transistor connected with suitable resistors.
- the first connection of the switching device is connected to a collector or drain connection of the transistor and / or the second connection of the switching device is connected to an emitter or source connection and / or the control connection of the switching device is connected to a base or gate connection of the transistor.
- the circuit arrangement according to the invention can have a switching device which can be controlled as a function of the control signal, is connected between the first supply line and the control input, and is designed to conduct when the first signal state is present when the switching line is at the second potential.
- This - also to be referred to as the first switching device - Switching device can therefore provide the charging current flow from the first supply line to the switching line.
- the first switching device is set up to block during the entire duration of the presence of the second signal state.
- the first switching device can thus suppress the discharge current flow when the second signal state is present.
- the second connection of the first switching device is preferably connected to the first supply line.
- the circuit arrangement according to the invention can furthermore have a switching device which can be controlled as a function of the control signal, is connected between the control input and the second supply line and is set up to conduct when the second signal state is present when the switching line is at the first potential.
- This switching device which can also be referred to as the second switching device, can therefore provide the charging current flow from the second supply line to the switching line.
- the second switching device is set up to block for the entire duration of the presence of the first signal state.
- the second switching device can thus suppress the discharge current flow when the first signal state is present.
- the second connection of the second switching device is preferably connected to the second supply line.
- the transistors of the first switching device and the second switching device are preferably of different types, for example npn or pnp bipolar transistors or n or p-channel field effect transistors.
- the or a respective switching device is at an additional dependence on a potential Control input of the functional element controllable.
- the first connection of the or a respective switching device is typically connected to the supply line.
- the circuit complexity is reduced in comparison to the first embodiment, the first switching device when the second signal state is present or the second switching device when the first signal state is present, however, causing a low discharge current flow.
- this leads to a somewhat less stable voltage lying outside the voltage interval above the capacitance, which, however, can be tolerated depending on the intended use of the circuit arrangement or the design of the functional element.
- a diode is connected between a respective switching device and the control input, the diodes having opposite forward directions. These are used in particular in the first embodiment to suppress the discharge current flow.
- resistors are connected in series with a respective diode, the resistors having different resistance values.
- current flows to the respective supply lines can be set differently by selecting the resistance values.
- the resistors serve primarily to set a time constant for loading the capacitance.
- circuit arrangement it can further be provided that it has one or two input-side switching elements, the or a respective switching element connecting the supply lines via a resistor ver.
- a control connection of the or of a respective switching element can form the input.
- a control connection of the or a respective switching device is connected between the or a switching element and the resistor.
- a resistance unit which connects the switching element and the control input to one another. The third embodiment in particular manages without switching devices and is consequently particularly easy to implement.
- the second embodiment Like the second embodiment, however, it also has a lower voltage stability than the first embodiment.
- a resistance value of the resistance unit is dependent on a current direction through the resistance unit.
- current flows to the respective supply lines can be set differently by selecting the resistance values.
- the functional element is preferably an electronically controlled switch, in particular a field effect transistor.
- the capacitance is then realized by the gate-source capacitance of the field effect transistor.
- the circuit arrangement can furthermore have a resistor in the switching line, the electronically controlled switch being connected in series with a further resistor in order to connect both resistors in parallel as a function of the control signal.
- the circuit arrangement consequently allows the total resistance in the switching line to be varied as a function of the control signal even when the potential on the switching line changes.
- circuit arrangement according to the invention has a capacitor connected in parallel with the capacitance.
- the capacitance of the capacitor thus adds up to the capacitance of the functional element.
- the circuit arrangement can comprise a voltage limiting unit connected in parallel with the capacitance of the functional element, in particular formed from two Zener diodes connected in opposite directions in series.
- the Target voltages can thus be adapted to a permissible maximum voltage and / or minimum voltage at the control input of the functional unit.
- the invention relates to a converter comprising at least two half bridges, each having two power switching elements connected in series, a circuit arrangement according to the invention, a driver unit which is set up to control a control connection of one of the power switching elements via the switching line, and a voltage supply unit which is set up for common supply of the driver unit and the circuit arrangement via whose first supply line and second supply line.
- the invention relates to a vehicle, in particular a hybrid vehicle or electric vehicle, comprising an electric motor which is set up to drive the vehicle, and a converter according to the invention for supplying the electric motor.
- FIG. 1 shows a circuit diagram of a first exemplary embodiment of a circuit arrangement according to the invention
- FIG. 2 shows a diagram with voltage profiles over time during the operation of the circuit arrangement shown in FIG. 1; 3 shows a circuit diagram of a second exemplary embodiment of a circuit arrangement according to the invention;
- FIG. 4 shows a diagram with voltage profiles over time during the operation of the circuit arrangement shown in FIG. 3;
- FIG. 5 shows a circuit diagram of a third exemplary embodiment of a circuit arrangement according to the invention.
- Fig. 6 is a schematic diagram of an embodiment of a vehicle according to the invention with an embodiment of a converter according to the invention.
- Fig. 1 is a circuit diagram of a first embodiment of a circuit arrangement 1, which receives a control signal 3 via an input 2.
- the circuit arrangement 1 is connected by way of example via further inputs 4, 5 to a voltage supply unit 2a, via an input 6 to a driver unit 6a and via an output 7 to a control terminal 8 of a power switching element 9 in the form of an insulated gate bipolar transistor (IGBT).
- IGBT insulated gate bipolar transistor
- the voltage supply unit 2a has a first voltage source 10, which provides a voltage for switching on the power switching element 9, for example +15 volts compared to a potential 11, which corresponds to a potential at a reference terminal 8a (here the emitter terminal) of the power switching element 9, and a second voltage source 12, which provides a voltage for switching off the power switching element 9 of, for example, -8 volts.
- the driver unit 6a is also connected to the voltage sources 10, 12 and is set up to alternately provide the voltage of the first voltage source 10 or the voltage of the second voltage source 12 at the input 6 of the circuit arrangement as a function of a clocked signal 14.
- the circuit arrangement 1 comprises a first supply line 15 for a first potential, which is provided via the input 4 from the first voltage source 10, and a second supply line 16 for a second potential, which is provided via the input 5 from the second voltage source 12 . Furthermore, the circuit arrangement 1 comprises a switching line 17 which can be alternately connected to the first supply line 15 and the second supply line 16, which in the present case takes place by means of the driver unit 6a. The switching line 17 thus has a potential 1 1 or the supply lines 15, 16 depending on the clocked signal 14 alternating potential.
- the circuit arrangement 1 comprises a functional element 18 with a control input 19 and a capacitance 20 between the control input 19 and the switching line 17.
- the functional element 18 performs functions depending on the voltage drop across the capacitance 20. In order to make these functions dependent on the signal state of the control signal 3, the signal state of the control signal 3 is transmitted from the input 2 to the functional element 18.
- a first function is carried out when the voltage is safely above a first threshold value, and a second function performed when the voltage is safely below the second threshold.
- the threshold values therefore limit a voltage interval, which the capacitance 20 - apart from passages when changing between the functions - should not take up regardless of the potential connected to the switching line 17 and the signal state of the control signal 3.
- the functional element 18 is designed as an electrical switch 21 in the form of a field effect transistor and is used to switch a resistor 22 connected in the switching line 17 in dependence on the control signal 3 in parallel with a further resistor 23 connected in series with the functional element 18 so as to provide a gate resistor having a value lower than the value of the resistor 22 for turning off the power switching element 9.
- the circuit arrangement 1 is set up to charge the capacitance 20 to a first target voltage by means of a charging current flow when the switching line 17 is on the second in the presence of the first signal state of the control signal 3 via the first supply line 15 Potential lies.
- the circuit arrangement 1 suppresses an opposite discharge current flow from the capacitance 20 to the first supply line 15 when the switching line 17 is at the first potential in order to keep a voltage falling across the capacitance 20 outside the voltage interval beyond the first threshold value.
- the circuit arrangement 1 is also set up to charge the capacitance 20 in the presence of the second signal state of the control signal 3 via the second supply line 16 by means of a charging current flow to a second target voltage complementary to the first target voltage when the switching line 17 is at the first potential.
- the circuit arrangement 1 suppresses a discharge current flow from the capacitance 20 to the second supply lines 16 which is opposite to the charge current flow when the switch line 17 is at the second potential in order to keep the voltage falling across the capacitance 20 outside the voltage interval beyond the second threshold value. That is, the circuit arrangement 1 charges the capacitance 20 when the signal state changes to such a high voltage amount that the control input 19 of the functional unit 18 in the first signal state with respect to the switching line 17 is always at a high potential and in the second signal state with the switching line 17 is always at a low potential, regardless of which supply line 15, 16 is currently connected to the switching line 17.
- the circuit arrangement 1 has a first switching device 24, which is controllable as a function of the control signal 3 and is connected between the first supply line 15 and the control input 19.
- the first switching device 24 is set up to lead in the presence of the first signal state to the charge current flow from the first supply line 15 to the capacitance 20 to enable.
- the first switching device 24 is set up for blocking while the second signal state is present.
- the circuit arrangement 1 has a second switching device 25, which is controllable as a function of the control signal 3 and is connected between the control input 19 and the second supply line 17.
- the second switching device 25 is configured to conduct when the second signal state is present in order to enable the charging current flow from the capacitor 20 to the second supply line 17.
- the second switching device 25 is set up for blocking while the first signal state is present.
- Both switching devices 24, 25 each include a transistor 26 and a resistor network 27, which sets the operating point of the transistor 26.
- the transistor 26 thus implements a switching path between a first connection 28 and a second connection 29 of a respective switching device 24, 25.
- the switching path can therefore be controlled as a function of a voltage difference between a control connection 30 and the second connection 29.
- the transistor 26 Since the second connection 29 of the first switching device 24 is connected to the high potential of the first supply line 15, the transistor 26 is a pnp bipolar transistor or alternatively a p-channel field effect transistor.
- the transistor 26 of the second switching device 25 is an npn bipolar transistor or alternatively an n-channel field effect transistor, since the second connection 29 of the second switching device 25 is at the low potential of the second supply line 16.
- circuit arrangement 1 has a first switching element 31 and a second switching element 32, each of which realizes a switching path between a first terminal 33 and a second terminal 34, the switching path being controllable as a function of a voltage applied to a control terminal 35.
- the switching elements 31, 32 also have a transistor 36.
- the control connections 35 are connected directly to the input 2. While the second connections 34 of the switching elements 31, 32 with the second supply line 16 are connected, the first terminal 33 of the first switching element 31 via a resistor 34 and the first terminal 33 of the second switching element 32 are connected via a resistor 35 to the first supply line 15.
- the control connection 30 of the first switching device 24 is connected between the resistor 34 and the first connection 33 of the first switching element 31. Accordingly, the control connection 30 of the second switching device 25 is connected between the first connection 33 of the second switching element 32 and the resistor 35.
- Is therefore a positive voltage representing the first signal state at input 2, the switching paths at switching elements 31, 32 become conductive, so that control connections 30 of both switching devices 24, 25 are at the potential of second supply line 16.
- the switching path of the first switching device 24 becomes conductive, so that the charging current flow can flow.
- the second switching device 25 blocks in order to suppress the discharge current flow during the entire duration of the presence of the first signal state.
- a low voltage present at input 2 representing the second signal state leads to the switching elements 31, 32 blocking, so that the control connections 30 of the switching devices 24, 25 are pulled to the potential of the first supply line 15. Accordingly, the switching path of the second switching device 25 becomes conductive, so that the charging current flow can flow, whereas the first switching device 24 blocks in order to suppress the discharge current flow during the entire duration of the presence of the second signal state.
- the circuit arrangement 1 also has a first diode 37, which is connected to a first resistor 38 in series between the first terminal 28 of the first switching device 24 and the capacitor 20, and a second diode 39, which is connected in series to a second resistor 40 the first connection 28 of the second switching device 25 and the capacitance 20 is connected.
- the direction of passage of a respective diode 37, 39 corresponds to the direction of the desired charging current flow. This eliminates unwanted discharge Current flows when the device connected to a respective diode 37, 39 GmbHeinrich 24, 25 conducts avoided.
- a respective time constant of the charging current flow is set by the resistors 37, 40.
- the circuit arrangement 1 has a capacitor 41 which is connected in parallel with the capacitor 20.
- the capacitance of the capacitor 41 is added to the capacitance 20, so that suitable time constants of the recharging processes can be set by suitable selection of the capacitance of the capacitor 41 and the values of the resistors 38, 40 for the operation of the circuit arrangement 1.
- the circuit arrangement 1 has a voltage limiting unit 42 which is connected in parallel to the capacitance 20 of the functional element 18 and is formed from two tens diodes 43, 44 connected in series opposite to one another.
- the voltage limiting unit 42 limits the voltage applied to the control input 19 to the permissible maximum and minimum values of the functional element 18.
- FIG. 2 is a diagram of the profile 45 of a voltage U, which drops across the capacitance 20, over the time t during the operation of the circuit arrangement 1.
- a line 46 marks the voltage of the first supply line 15 related to the potential 11 and a line 47 the voltage of the second supply line 16 related to the potential 11.
- the voltage interval is provided with a reference symbol 45a.
- the voltage of the switching line 17 changes with respect to the potential 11 as a function of the clocked signal 14 so often that its influence on the course 45 of the voltage U in FIG. 2 cannot be shown resolved in time.
- the curve 45 of the voltage across the capacitance 20 corresponds qualitatively to the curve of the control signal 3, which changes its signal state much less frequently than the clocked signal 14.
- the control input 19 is provided with a clean control voltage which is reduced to ⁇ 17 by the voltage limiting unit 42 Volts is limited.
- the course 45 has only one low ripple 48 corresponding to the switching frequency of the clocked signal 14, which is due to the fact that the undesired discharge current flow is suppressed but not completely prevented.
- Fig. 3 is a circuit diagram of a second embodiment of a circuit arrangement 1, wherein the same or equivalent components are provided with identical reference numerals compared to the first embodiment.
- an identical external circuit as shown in FIG. 1 is assumed.
- the circuit arrangement 1 is set up to limit the discharge current flow from the capacitance 20 to one of the supply lines 15, 16 during the presence of a respective signal state in order to keep the voltage dropping across the capacitance 20 outside the voltage interval, so that the voltage is greater than the Capacity 20 always reliably realizes one of the functions of the functional element 18.
- the discharge current flow is not suppressed here.
- the circuit arrangement 1 can be realized more easily.
- the second exemplary embodiment of the circuit arrangement has only one switching element 31 and one counter 34.
- the control inputs 30 of both switching devices 24, 25 are connected between the first connection 33 of the switching element 31 and the resistor 34.
- the first connection 28 to the first supply line 15 and the second connection 29 via the first diode 37 and the first resistor 38 are connected to the capacitance 20.
- the second switching device 25 the first connection 28 is connected to the second supply line 16 and the second connection 29 is connected to the capacitance 20 via the second diode 39 and the second resistor 40.
- the switching devices 24, 25 can be controlled as a function of a potential at the control output 19.
- the switching devices 24, 25 therefore each implement a voltage follower in which the potential at the second connection 29 follows the potential at the control input 30.
- the transistor 26 of the first switching device 24 is accordingly realized as an npn bipolar transistor or alternatively as an n-channel field-effect transistor.
- the transistor 26 of the second switching device 25 is consequently implemented as a pnp bipolar transistor or p-channel field effect transistor.
- the control signal 3 is transmitted to the functional element 18 using complementary logic. Is therefore at the input 3 a sufficiently low voltage representing the first signal state, the switching element 31 locks and the control connections 30 of the switching devices 24, 25 are pulled to the potential of the first supply line 15.
- the charging current flows through the first switching device 24 and the first diode 37 to the capacitor 20.
- the limited discharging current flow to the second supply line 16 also flows temporarily through the second switching device 25, but is less than that Charging current flow is.
- the switching element 31 conducts when a positive voltage representing the second signal state is present at the input 3.
- the control connections 30 of the switching devices 24, 25 are at the potential of the second supply line 16.
- the charge current flow from the capacitor 20 flows through the second switching device 25 and the second diode 39 to the second supply line.
- the limited discharge current flows to the first supply line 15, which is, however, smaller than the charging current flow.
- Fig. 4 is a diagram of the course 49 of a voltage U, which falls across the capacitance 20, over the time t during the operation of the second embodiment, the illustration corresponding to Fig. 2 otherwise.
- the curve 49 of the voltage across the capacitance 20 corresponds qualitatively to the curve of the control signal 3.
- a well-defined control voltage is provided, which is limited to -17 volts by the voltage limiting unit 42.
- the curve 49 has a ripple 50 corresponding to the switching frequency of the clocked signal 14, which is greater than the ripple 48 in the first exemplary embodiment. Consequently, the voltage interval 45a is smaller than in the first embodiment.
- the ripple results from the fact that the discharge current flow is only limited and is not suppressed. For a large number of possible functional elements 19, however, the higher ripple 50 is tolerable.
- Fig. 5 is a circuit diagram of a third embodiment of a circuit arrangement 1, the same or equivalent components are provided with identical reference numerals compared to the first embodiment. In the explanation of the function of this embodiment, an identical external circuit as shown in Fig. 1 is assumed.
- the circuit arrangement 1 is set up to limit the discharge current flow from the capacitance 20 to one of the supply lines 15, 16 during the presence of a respective signal state. In contrast to the first exemplary embodiment, the discharge current flow is also not suppressed here.
- the third embodiment of the circuit arrangement 1 can be realized more easily than the first embodiment and as the second embodiment.
- the third embodiment of the circuit arrangement 1 only has a switching element 31 and a resistor 34.
- the switching devices 24, 25 are dispensed with.
- the switching element 31 is set up to suppress a discharge current flow to the second supply line 17 while the first signal state is present and to suppress a discharge current flow to the first supply line 15 while the second signal state is present.
- a resistance unit 51 connecting the control input 19 to the switching element 31 is provided, the resistance value of which depends on a current direction of a current flowing through it.
- the resistance unit 51 has a series circuit comprising a first diode 52 and a first resistor 53 and a series circuit connected in parallel comprising a second diode 54 and a second resistor 55.
- the diodes 52, 54 have an opposite forward direction and the resistors 53, 55 have different resistance values.
- Alternative configurations of the resistance unit 51 comprise a first resistor which is connected in series with a parallel circuit comprising a diode and a second resistor, or a first resistor which is connected in parallel with a series circuit comprising a diode and a second resistor.
- the control signal 3 is transmitted to the functional element 18 with the complementary logic. If there is therefore a sufficiently low voltage representing the first signal state at the input 2, the switching element 31 blocks and the resistance unit 51 is connected to the first supply line 15. In this case, a charge current flows through the first diode 52 to the capacitance 20. However, depending on the potential on the switching line 17, the discharge current flows temporarily to the first supply line 15 through the second diode 54, but this is smaller than the charge current flow.
- the switching element 31 conducts when a positive voltage representing the second signal state is present at the input 3.
- the resistance unit 51 is connected to the second supply line 16.
- the charge current flow from the capacitor 20 flows through the second diode 54 to the second supply line 16.
- the discharge current flow sometimes flows through the first diode 52 to the second supply line 16, which is, however, smaller than the charge current flow.
- the course of a voltage which drops across the capacitance 20 essentially corresponds to the course 49 shown in FIG. 4 in the third exemplary embodiment.
- FIG. 6 is a schematic diagram of an embodiment of a vehicle 56 with an embodiment of a converter 57.
- the converter 57 comprises three void bridges 58, each of which has two power switching elements 9 connected in series, a control connection 8 of a respective power switching element 9 being connected to a circuit arrangement 1 according to one of the exemplary embodiments described above.
- a voltage supply unit 2a and a driver unit 6a are also provided, which are set up to control the control connection 8 of the power switching element 9 via the switching line 17.
- the voltage supply unit 2a is set up to supply the driver unit 6a and the circuit arrangement 1 together via their first supply line 15 and second supply line 16.
- the circuit arrangement 1, the voltage supply unit 2a and the driver unit 6a in FIG. 6 are only shown for a power switching element 9.
- the converter 57 also has a control unit 59 which is set up to provide the control signal 3 for all circuit arrangements 1 and a clocked signal 14 for a respective driver unit 6a.
- the vehicle 56 is a hybrid vehicle or electric vehicle, comprising an electric motor 60 which is set up to drive the vehicle and can be supplied by the converter 57. For this purpose, this converts a DC voltage provided by a high-voltage battery 61 into a three-phase AC voltage for the electric motor 60.
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- Electronic Switches (AREA)
- Power Conversion In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018132496.0A DE102018132496A1 (de) | 2018-12-17 | 2018-12-17 | Schaltungsanordnung zum Übertragen eines Steuersignals, Stromrichter und Fahrzeug |
| PCT/EP2019/083450 WO2020126464A1 (de) | 2018-12-17 | 2019-12-03 | Schaltungsanordnung zum übertragen eines steuersignals, stromrichter und fahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3900184A1 true EP3900184A1 (de) | 2021-10-27 |
Family
ID=68771676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19813817.4A Withdrawn EP3900184A1 (de) | 2018-12-17 | 2019-12-03 | Schaltungsanordnung zum übertragen eines steuersignals, stromrichter und fahrzeug |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3900184A1 (de) |
| CN (1) | CN113383493A (de) |
| DE (1) | DE102018132496A1 (de) |
| WO (1) | WO2020126464A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022211425A1 (de) * | 2022-10-27 | 2024-05-02 | Inventronics Gmbh | Schaltungsanordnung zum Ansteuern einer Last |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0617512A3 (de) * | 1993-03-22 | 1995-06-28 | Siemens Ag | Aktiver Gate-Widerstand. |
| DE102007022515A1 (de) * | 2007-05-14 | 2008-11-20 | Siemens Ag | Verfahren und Vorrichtung zum Betreiben einer Steuereinheit zur Ansteuerung einer elektrischen Maschine |
| JPWO2015111154A1 (ja) * | 2014-01-22 | 2017-03-23 | 株式会社安川電機 | スイッチング回路、インバータ回路、及びモータ制御装置 |
| JP2015154591A (ja) * | 2014-02-14 | 2015-08-24 | ローム株式会社 | ゲート駆動回路および電源装置 |
| US9837887B1 (en) * | 2016-08-01 | 2017-12-05 | Ford Global Technologies, Llc | IGBT gate drive with active turnoff to reduce switching loss |
| US9813009B1 (en) * | 2017-02-07 | 2017-11-07 | Ford Global Technologies, Llc | Active gate clamping for inverter switching devices using grounded gate terminals |
| US10611246B2 (en) * | 2017-03-29 | 2020-04-07 | Ford Global Technologies, Llc | Gate driver with temperature compensated turn-off |
-
2018
- 2018-12-17 DE DE102018132496.0A patent/DE102018132496A1/de not_active Withdrawn
-
2019
- 2019-12-03 CN CN201980090604.0A patent/CN113383493A/zh active Pending
- 2019-12-03 WO PCT/EP2019/083450 patent/WO2020126464A1/de not_active Ceased
- 2019-12-03 EP EP19813817.4A patent/EP3900184A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018132496A1 (de) | 2020-06-18 |
| CN113383493A (zh) | 2021-09-10 |
| WO2020126464A1 (de) | 2020-06-25 |
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