WO2023036511A1 - Wechselrichter für einen elektrischen antriebsstrang und verfahren zum betrieb eines wechselrichters - Google Patents
Wechselrichter für einen elektrischen antriebsstrang und verfahren zum betrieb eines wechselrichters Download PDFInfo
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- WO2023036511A1 WO2023036511A1 PCT/EP2022/070769 EP2022070769W WO2023036511A1 WO 2023036511 A1 WO2023036511 A1 WO 2023036511A1 EP 2022070769 W EP2022070769 W EP 2022070769W WO 2023036511 A1 WO2023036511 A1 WO 2023036511A1
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- WIPO (PCT)
- Prior art keywords
- inverter
- energy source
- safe state
- switching elements
- voltage
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 13
- 230000001960 triggered effect Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0069—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to the isolation, e.g. ground fault or leak current
-
- 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
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
-
- 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
- B60L2210/00—Converter types
- B60L2210/40—DC to AC converters
Definitions
- the invention relates to an inverter for an electric drive train and a method for operating an inverter. Furthermore, the invention relates to a drive train with an inverter and a vehicle with a drive train.
- Inverters for converting a DC voltage from an energy source into a multi-phase AC voltage for supplying an electric machine, for example for an electric drive train of a vehicle are known.
- a safe state is set in an inverter in the event of a fault, preferably in the event of a fault within an inverter. This ensures safety for people accessing the vehicle, such as rescue workers in the event of an accident, and the integrity of the electrical system. In addition, no incorrect torque is set.
- the inverter is usually controlled by a control device with a microcontroller in a low-voltage part of the inverter.
- an independent, redundant second control device in a high-voltage part of the inverter can automatically switch the inverter to a safe state in order to prevent possible damage to electrical components. Damage can occur, for example, as a result of an uncontrolled input of energy due to the induced voltage of the rotating electrical machine in the intermediate DC voltage circuit.
- the DC voltage intermediate circuit becomes the inverter powered by an energy source connected to it.
- Conventional methods provide different circuit states as so-called safe states. For example, all switching elements connected to the low potential, so-called low-side switches, can be closed and all switching elements connected to the high potential, so-called high-side switches, can be opened. This mode of operation is also referred to as an active short or short to low condition.
- all of the high-side switches can also be closed and all of the low-side switches can be opened, resulting in a short-circuit state to a high potential.
- all switches of the pulse-controlled inverter are opened. This is also a safe state. This is also referred to as freewheel mode.
- a safe state can be set via a software-independent, redundant switch-off path with a low probability of failure, so that the switching elements are switched to a safe state even in the event of serious internal errors, such as the loss of the microcontroller supply.
- the energy source of a drive train When the energy source of a drive train is discharged, it must be recharged so that the drive train or the vehicle with the drive train is ready for use again.
- the energy source is charged with a high DC voltage by means of a charging device when the vehicle is stationary and thus when the electrical machine is stationary or not rotating or rotating.
- This DC voltage is also present at the inverter during the charging process, since the energy source is electrically connected to the inverter.
- it and preferably the switching elements of the bridge circuit of the inverter must be actively controlled. To this end, it has been preferred up to now, preferably by means of the control device in a low-voltage part of the inverter, to drive the inverter into the short-circuit state at a low potential.
- An inverter for an electric drive train comprising an input connection for connecting an energy source and a charging device connected in parallel for charging the energy source, an output connection for connecting a multi-phase electric machine and a plurality of switching elements of a bridge circuit.
- the inverter is characterized by being arranged to open the switching elements while the power source is being charged by the charger.
- An inverter for an electric powertrain is provided.
- An inverter is used to convert direct current into alternating current and/or vice versa.
- an inverter has on the one hand an input connection to which a DC voltage source, an energy source, can be connected. Connecting here means the electrical connection, making contact or establishing an electrical connection between the inverter and the connection contacts of the energy source.
- the energy source can be an electric battery, traction battery or a fuel cell.
- the electrical energy from the DC voltage source is converted into a multi-phase AC voltage within the inverter by means of a bridge circuit in order to supply a multi-phase load.
- the inverter includes an output connection to which a multi-phase electrical machine can be connected as a load.
- Connecting here means the electrical connection, making contact or establishing an electrical connection between the inverter and the connection contacts of the electrical machine.
- a multi-phase synchronous machine or asynchronous machine can preferably be connected as the electrical machine.
- a bridge circuit includes a plurality of switching elements, for example a B6 bridge for supplying a three-phase load includes six switching elements. In each case, two switching elements are connected in series to form an H-bridge. The series connection is connected between the upper potential and the lower potential of the input connection. A center tap between the two switching elements, ie an upper and a lower switching element, is electrically connected to a phase or a potential of the output connection.
- an electrical connection between the upper potential of the input terminal and the phase can be established by closing an upper switching element, and an electrical connection between the lower potential of the input terminal and the phase can be established by closing a lower switching element.
- a DC voltage present at the input connection is provided as an AC voltage at the output connection, for example by means of pulse width modulation or block commutation.
- a charger can be connected to the input connection of the inverter in parallel with the DC voltage source. This enables the energy source to be charged by means of the charging device. To this end, the charger draws electrical energy from an electrical power supply network or an electrical storage arrangement.
- the charger converts this electrical energy, DC voltage or AC voltage, into a sufficiently high DC voltage.
- This DC voltage is electrically connected to the connection contacts of the energy source.
- the DC voltage provided by the charger is greater than the current voltage of the energy source, the electrical energy flows into the energy source.
- the energy source is charged. While the energy source is being charged, the DC voltage is also present at the input connection of the inverter due to the electrical parallel connection of the energy source to be connected and the charging device.
- the inverter is set up to open the switching elements of the bridge circuit, in particular while the energy source is being charged by means of the charger. Thus, all switching elements between the input terminal and the output terminal of the inverter are open. A current flow between the energy source and the electrical machine is thus prevented during charging.
- individual switching elements are not loaded with the full intermediate circuit voltage during the charging time.
- the inverter includes a data memory with a memory content.
- the inverter is set up to set a first or a second safe state depending on the memory content.
- Establishing the first safe state includes opening the switching elements.
- setting the second safe state includes closing all of the lower or all of the upper switching elements of the bridge circuit.
- the inverter includes a data memory with a memory content.
- a data memory is, for example, an electronic component which can assume at least two different states, for example. These different states are referred to as memory content, for example.
- the memory content of a data memory can be read out electronically.
- the inverter is designed to set a first or a second safe state depending on the memory content.
- safe states for an inverter are known to ensure safety for persons accessing the vehicle as well as the integrity of the electrical system.
- Establishing the first safe state includes opening the switching elements of the bridge circuit.
- Setting the second safe state includes in particular the closing of all lower or all upper switching elements of the bridge circuit.
- An inverter which sets a first or a second safe state depending on a memory content.
- an inverter is provided in which the setting of a first or second safe state can be specified by specifying a memory content.
- the inverter has a driving mode and a charging mode.
- the inverter is set up to specify the memory content of the data memory so that during operation in charging mode as a safe state of the first safe state is provided and in particular to specify the memory content of the data memory in such a way that the second safe state is provided as a safe state during operation in driving mode.
- An inverter has different operating modes. When a vehicle is driving, the inverter is operated in a driving mode. In the driving operating mode, the inverter converts electrical energy that is present at the input connection and makes it available at the output connection, or the inverter converts the electrical energy of a connected energy source and transmits it to a connected polyphase electrical machine.
- the rotor of the multi-phase electrical machine preferably rotates during the driving operating mode.
- the inverter is operated in a charging operating mode in which a DC voltage is present at the input connection.
- the rotor of the multi-phase electrical machine preferably stands still during the charging operating mode and the rotor preferably does not rotate.
- the inverter disconnects the electrical connection between the input port and the output port, or the inverter disconnects the electrical connection between a connected energy source and the multi-phase electric machine.
- the inverter specifies the memory content of the data memory in such a way that the first safe state is set as the safe state during operation in the charging operating mode. Consequently, depending on the present memory content, the inverter opens all switching elements of the bridge circuit in the charging operating mode, in which the energy source is charged by means of the charging device.
- the inverter specifies the memory content of the data memory in such a way that the second safe state is set as the safe state during operation in the driving operating mode.
- the setting of the second safe state preferably includes the closing of all lower or all upper switching elements of the bridge circuit.
- An inverter is advantageously provided which, depending on the present operating mode, provides a first or second safe state as a safe state and thus ensures improved safety and service life.
- the inverter includes at least one impedance that is connected in parallel to a switching element of the bridge circuit.
- An impedance is preferably connected in parallel with each of the lower and/or the upper switching elements.
- An impedance preferably includes an ohmic resistance, a capacitance and/or an inductance.
- An impedance is connected in parallel with at least one switching element of the bridge circuit or each of the lower and/or upper switching elements of the bridge circuit.
- the parallel-connected impedances have the effect that a voltage applied to the bridge circuit is defined or evenly distributed over the bridge branches and the individual switching elements.
- the impedances at the individual switching elements are therefore preferably of the same size for uniform distribution.
- An impedance preferably includes an ohmic resistance, a capacitance and/or an inductance.
- the ohmic resistances are preferably very high-impedance, preferably between approximately 100 kOhm and 10 MOhm.
- An inverter is advantageously provided in which the voltage applied to the bridge circuit is defined and/or evenly distributed to the switching elements when the switching elements are open. This controls and balances the load on the switches and increases the life of the inverter.
- the inverter includes a low-voltage part and a high-voltage part, with the inverter providing the safe state by means of the high-voltage part.
- An inverter which on the one hand includes a low-voltage part, which preferably includes the control electronics for controlling the bridge circuit, preferably for the driving mode, and/or the communication with other vehicle control units.
- the low-voltage part of the inverter is preferably supplied with electrical energy by means of a connected low-voltage vehicle electrical system.
- the inverter also includes a high-voltage part, which preferably includes the high-voltage electrical components in the inverter, such as, for example busbars, the intermediate circuit capacitor, the bridge circuit and the gate driver.
- the high-voltage part of the inverter is preferably supplied with electrical energy by means of a connected high-voltage traction network, to which the energy source is also connected.
- the high voltage part includes a safe state setting circuit.
- an inverter which, in the event of a defective low-voltage part or a lack of power supply in the low-voltage part, nevertheless provides a safe state from the high-voltage part alone. Consequently, a safe state, preferably freewheeling, is advantageously set by means of the high-voltage part in a charging operating mode depending on the memory content in the event of an inadequate supply of the low-voltage part.
- the high-voltage part includes the data memory.
- the inverter is set up to set the memory content of the data memory by means of a signal from the low-voltage part to the high-voltage part.
- the high-voltage part also includes the data memory.
- the memory content of the data memory is set and specified as a function of a signal which is transmitted from the low-voltage part to the high-voltage part.
- a digital signal is preferably transmitted via an isolation barrier from the low-voltage to the high-voltage part of the inverter.
- the information of the signal is stored in the data memory as memory content, preferably in a register, latch or status latch with a low failure rate.
- Two pieces of information are preferably transmitted via a digital signal with a modulated clock ratio and frequency. This preferably makes it possible to save a digital signal via the isolation barrier, as a result of which a converter channel or optocoupler can be saved.
- a microcontroller the main microcontroller, of the low voltage part of the inverter sends a clock signal (clock signal) via a digital isolator.
- This signal preferably contains the two pieces of information encoded in frequency and clock ratio.
- the clock ratio of the signal preferably indicates, as information in the signal, whether the first safe state or the second safe state is to be set as the safe state.
- the frequency preferably indicates, as other information, whether the safe state has been triggered or not is provided.
- the safe state is triggered or set when the signal falls below a frequency threshold.
- the data memory or the latch preferably evaluates both pieces of information and stores the first piece of information, the type of safe state, as memory content.
- Both pieces of information are preferably forwarded to the gate driver via a logic circuit, preferably linked to other pieces of information, in order to set a safe state.
- the information that the safe state is triggered preferably causes the latch to be blocked.
- the evaluation of the signal frequency preferably takes place significantly faster than that of the clock ratio, as a result of which static signals are immediately recognized as such and the previously transmitted safe state can be reliably stored and set.
- the latch can consist of analog or digital logic components. Alternatively, instead of the one modulated clock signal, two digital signals can also be used in order to transmit the two pieces of information to the data memory or the latch.
- the memory content preferably acts directly on a redundant switch-off path, preferably in the high-voltage part, and sets freewheeling, ie the opening of the switching elements of the bridge circuit, as a safe state during charging of the energy source or during the charging operating mode.
- the inverter is set up to switch off the low-voltage part while the energy source is being charged by the charger.
- the inverter turns off the low-voltage part while the power source is being charged by the charger or during the charging operation mode.
- the frequency of the signal from the low-voltage part drops accordingly, so that the inverter switches to the safe state depending on the storage content.
- the inverter sets the memory content of the data memory in charging mode so that as a safe state the first safe state, namely freewheeling, is provided.
- the inverter is controlled during the charging mode to set a safe state via the high-voltage part.
- the high-voltage part is preferably supplied by means of a high-voltage traction network.
- the energy source is preferably connected to the high-voltage traction network.
- the safe state is set depending on the storage content in the data memory or in the latch, which allows the low-voltage part of the inverter to be switched off during the charging mode of operation.
- the memory content of the data memory or the latch preferably holds the second safe state, preferably the active short circuit, as a safe state in normal operation or driving mode, independently of the microcontroller, in order to ensure torque and high-voltage safety.
- the memory content is preferably only set in such a way that switching to the first safe state or freewheeling occurs when the data memory receives a reset signal and a modulated clock signal.
- the output signal of the latch depending on the memory content of the data memory or of the latch, preferably controls the output stage of the gate driver directly via digital or analog logic in order to close or open the switching elements.
- the energy consumption of the inverter is minimized during charging.
- almost no electrical power is consumed via the connected low-voltage vehicle electrical system, by means of which the low-voltage part of the inverter is preferably supplied.
- the invention relates to a drive train of a vehicle with an inverter.
- a powertrain with an inverter is provided.
- a drive train of a vehicle preferably includes an energy source, a charging device and/or an electric machine. Modification of this drive train with an inverter as described advantageously enables minimized power consumption and loading during charging of the energy source.
- the invention relates to a vehicle with a drive train as previously described.
- a vehicle is advantageously provided in which advantageous minimized power consumption and load during charging of the energy source.
- the invention also relates to a method for operating an inverter, the inverter comprising an input connection for connecting an energy source and a charger connected in parallel for charging the energy source, an output connection for connecting a multi-phase electrical machine and a plurality of switching elements of a bridge circuit.
- the method comprises the steps: opening the switching elements while the energy source is being charged by the charger.
- a current flow between the energy source and the electrical machine is advantageously prevented during charging.
- individual switching elements are not loaded with the full intermediate circuit voltage during the charging time.
- FIG. 1 shows a schematic representation of an inverter.
- FIG. 2 shows a schematic representation of a vehicle with a drive train
- figure 3 a schematically illustrated method for operating an inverter.
- FIG. 1 shows an inverter 100 with an input connection 102 for connecting an energy source 104.
- the energy source 104 is preferably a battery, an accumulator, a high-voltage battery or a fuel cell, which is set up to provide a DC voltage at the input connection 102 of the inverter 100.
- a charging device 106 is connected in parallel with the energy source 104 .
- the charger 106 is set up to receive electrical energy 108 from a power supply network or a storage battery. This electrical energy 108 can be available as DC voltage or AC voltage.
- the charging device 106 transforms the electrical energy 108 into a charging voltage which is adapted to the energy source, and preferably to its charging state, and outputs this via the electrical connections to the energy source 104 while the energy source 104 is being charged.
- the inverter includes a multi-phase output connection 112 for connecting a multi-phase electrical machine 114.
- the inverter includes a plurality of switching elements 120Px, 120Nx of a bridge circuit.
- FIG. 1 shows an example of a B6 bridge, which includes three half-bridges, each with an upper 120Px and a lower 120Nx switching element.
- the switching elements 120Px, 120Nx are preferably IGBTs or MOSFETS.
- the switching elements 120Px, 120Nx preferably comprise an intrinsic freewheeling diode or body diode. Alternatively, a freewheeling diode is preferably connected in parallel with the switching elements 120Px, 120Nx. For reasons of clarity, these freewheeling diodes are not shown in FIG.
- the series connection of a half-bridge made up of upper and lower switching elements is connected between the potentials of the input connection 102 and a center tap between the two switching elements 120Px, 120Nx is connected to a potential of the multi-phase output connection 112.
- a DC voltage present at the input connection 102 preferably in the driving mode, is converted into an AC voltage by means of staggered and alternating closing and opening of the upper 120Px and lower 120Nx switching elements and is multi-phased at the output connection 112. provided to supply a connectable electrical machine 114.
- the inverter preferably includes impedances 122Px and 122Nx, which are each connected in parallel with a switching element 120Px, 120Nx.
- the electrical machine 114 that can be connected can be, for example, any multi-phase synchronous or asynchronous machine excited by permanent magnets or separately excited.
- a low-voltage part 150 of the inverter and a high-voltage part 160 that is delimited and insulated therefrom.
- the inverter 100 is preferably set up to transmit a signal 130 from the low-voltage part 150 to the high-voltage part 160 . It is preferably transmitted to a data memory 170 within the high-voltage part and the information is stored there as memory content.
- the inverter is also set up to set a predetermined safe state as a safe state, preferably depending on the memory content (shown in FIG. 1 by the arrow from the data memory in the direction of the bridge circuit). Wherein the inverter is set up to open all switching elements 120Px, 120Nx while the energy source 104 is being charged by means of the charging device 106 .
- FIG. 2 shows a schematically illustrated vehicle 300 with four wheels 302 and a drive train 200.
- the vehicle 300 is shown here only as an example with four wheels 302, the invention being equally applicable in any vehicle with any number of wheels on land, on water and in the air can be used.
- the drive train 200 shown as an example comprises at least one inverter 100.
- the drive train preferably also comprises an electrical energy source 104 and/or a polyphase electrical machine 114.
- the energy from the DC voltage source or energy source 104 is converted by the inverter 100 into a polyphase AC voltage for the operation of the electrical Machine 114 as a drive assembly for vehicle 300.
- the drive train preferably includes a charging device 106, which is electrically connected to energy source 104 for charging it and is connected in parallel.
- the charger is connected to an interface 107, preferably a charging socket on the body of the vehicle to preferably connect the charger to a power supply network or to a battery storage to provide the electrical energy 108 to charge the Energy source 104.
- the charging device can also be arranged outside of the drive train and also outside of the vehicle, for example in the infrastructure, with this being electrically connected to the energy source 104 and switched in parallel to charge it.
- FIG. 3 shows a schematically illustrated flowchart for a method 400 for operating an inverter 100.
- the method 400 starts with step 405.
- step 410 all switching elements 120Px, 120Nx of the bridge circuit of the inverter are opened, while the energy source 104 by means of the charger 106 is loaded.
- step 415 the method ends.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Inverter Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202280061728.8A CN117957135A (zh) | 2021-09-13 | 2022-07-25 | 用于电气的传动系的逆变器和用于运行逆变器的方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102021210089.9A DE102021210089A1 (de) | 2021-09-13 | 2021-09-13 | Wechselrichter für einen elektrischen Antriebsstrang und Verfahren zum Betrieb eines Wechselrichters |
DE102021210089.9 | 2021-09-13 |
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WO2023036511A1 true WO2023036511A1 (de) | 2023-03-16 |
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PCT/EP2022/070769 WO2023036511A1 (de) | 2021-09-13 | 2022-07-25 | Wechselrichter für einen elektrischen antriebsstrang und verfahren zum betrieb eines wechselrichters |
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CN (1) | CN117957135A (de) |
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Citations (4)
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DE102012216008A1 (de) | 2012-09-10 | 2014-03-13 | Robert Bosch Gmbh | Betriebszustandsschaltung für Wechselrichter und Verfahren zum Einstellen von Betriebszuständen eines Wechselrichters |
US20200023746A1 (en) * | 2018-07-18 | 2020-01-23 | Hyundai Motor Company | Battery charger for electric vehicle |
US20200298722A1 (en) * | 2015-09-11 | 2020-09-24 | Invertedpower Pty Ltd | Methods and systems for an integrated charging system for an electric vehicle |
WO2020248023A1 (en) * | 2019-06-12 | 2020-12-17 | Invertedpower Pty Ltd | An electric vehicle dc-dc boost converter |
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2021
- 2021-09-13 DE DE102021210089.9A patent/DE102021210089A1/de active Pending
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2022
- 2022-07-25 WO PCT/EP2022/070769 patent/WO2023036511A1/de active Application Filing
- 2022-07-25 CN CN202280061728.8A patent/CN117957135A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012216008A1 (de) | 2012-09-10 | 2014-03-13 | Robert Bosch Gmbh | Betriebszustandsschaltung für Wechselrichter und Verfahren zum Einstellen von Betriebszuständen eines Wechselrichters |
US20200298722A1 (en) * | 2015-09-11 | 2020-09-24 | Invertedpower Pty Ltd | Methods and systems for an integrated charging system for an electric vehicle |
US20200023746A1 (en) * | 2018-07-18 | 2020-01-23 | Hyundai Motor Company | Battery charger for electric vehicle |
WO2020248023A1 (en) * | 2019-06-12 | 2020-12-17 | Invertedpower Pty Ltd | An electric vehicle dc-dc boost converter |
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CN117957135A (zh) | 2024-04-30 |
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