EP3448712A1 - Elektrisches system mit mindestens zwei modulen - Google Patents
Elektrisches system mit mindestens zwei modulenInfo
- Publication number
- EP3448712A1 EP3448712A1 EP17709952.0A EP17709952A EP3448712A1 EP 3448712 A1 EP3448712 A1 EP 3448712A1 EP 17709952 A EP17709952 A EP 17709952A EP 3448712 A1 EP3448712 A1 EP 3448712A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- module
- electrical system
- electrical
- switching element
- modules
- 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- Withdrawn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
- 239000004065 semiconductor Substances 0.000 claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims description 22
- 150000001875 compounds Chemical class 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 description 11
- 238000013021 overheating Methods 0.000 description 4
- 229910002601 GaN Inorganic materials 0.000 description 3
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/493—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/102—Parallel operation of dc sources being switching converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0095—Hybrid converter topologies, e.g. NPC mixed with flying capacitor, thyristor converter mixed with MMC or charge pump mixed with buck
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/487—Neutral point clamped inverters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/12—Modifications for increasing the maximum permissible switched current
- H03K17/127—Modifications for increasing the maximum permissible switched current in composite switches
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Definitions
- the invention relates to an electrical system with at least two modules. Furthermore, the invention relates to a vehicle with the electrical system, and a method for operating the electrical system.
- Multi-module electrical systems are known in the art.
- electrical systems are manufactured and operated with a variable number of electrical modules.
- voltage transformers in which a plurality of, in particular similar, rectifier modules or inverter modules are connected in parallel depending on the mains current or the mains voltage or the energy to be transmitted.
- rectifier modules or inverter modules are connected in parallel depending on the mains current or the mains voltage or the energy to be transmitted.
- inverter modules there is a need to increase the efficiency of the electrical system, in particular cost-effective.
- a module of this electrical system comprises at least one switching element.
- the first module comprises a first switching element made of a first semiconductor material.
- the second module comprises a second switching element made of a second semiconductor material.
- An electrical system comprising two modules.
- the first and second modules are functionally similar electrical see modules, for example, a first and a second inverter or a first and a second DC-DC converter.
- the at least two modules each comprise at least one switching element, wherein a first switching element of the first module is made of a first semiconductor material, and a second switching element of the second module is made of a second semiconductor material.
- the electrical or chemical properties of the two semiconductor materials differ.
- the different electrical properties relate in particular to the electrical conductivity of the material as a function of applied electric fields, electrical voltages or electrical currents.
- the different chemical properties relate in particular to the different chemical elements of which the materials are composed.
- an electrical system with at least two modules is provided whose modules have different electrical and / or chemical properties.
- the first switching element has greater conduction and or switching losses than the second switching element.
- the first switching element Due to the different semiconductor materials from which the switching elements of the first and the second module are made, the first switching element has greater conduction losses or switching losses than the second switching element.
- modules are provided with different line and / or switching losses.
- the first switching element is operated at a lower switching frequency than the second switching element.
- An electrical system is provided, wherein the first switching element with a lower switching frequency, in particular at least 10% lower switching frequency, is operated as the second switching element. Due to the different semiconductor materials used and their different electrical properties of the first and the second switching element, there is the possibility that a switching element with a much higher frequency to operate as the other, without causing damage to the modules due to overvoltage or overheating.
- an electrical system is thus created in which the use of the individual modules is optimized depending on those electrical and chemical properties in operation.
- the first semiconductor material has a smaller band gap than the second semiconductor material.
- the first semiconductor material is an element semiconductor, for example silicon
- the second semiconductor material is a compound semiconductor, in particular silicon carbide or gallium nitride.
- band gaps Different semiconductor materials have different band gaps, so that, for example, a semiconductor material with a smaller band gap is used for the first switching element than for the second switching element. Due to the chemical compositions, the band gaps also differ with different element semiconductors or compound semiconductors. When using an elemental semiconductor in a module and a compound semiconductor, in particular silicon carbide or gallium nitride, in another module even larger bandgap differences can arise. The greater the differences between the band gaps, the greater the differences between the electrical and chemical properties of the semiconductor materials and thus also of the individual switching elements and ultimately of the modules.
- an electrical system with at least two modules is provided whose modules have different electrical and / or chemical properties.
- the electrical power of the modules are different in size. In particular, they have a ratio of approximately 55 to 45%, 60 to 40%, 70 to 30% or 80 to 20%, 90 to 10%, or respectively in reverse.
- the modules of the electrical system have different electrical powers.
- a single electrical module can be operated in a power range up to a maximum power. Within this performance There is at least one operating point where the single module can be operated most efficiently, for example with regard to the ratio of loss and net power. The losses occur, for example, in the switching operations and the power line through the switching element. The net power is, for example, the electrical power that is transmitted to a consumer connected to the switching element. It is desirable to operate this module as close as possible to this efficient operating point. Since the electrical system comprises at least two modules of different power levels, at least two different operating points result, in each case one of the two modules being operated most efficiently. A third efficient operating point results from the joint operation of both modules in their respective most efficient operating point.
- an electrical system is provided which, due to the ability to connect and disconnect the individual modules and their different sized nominal powers, can be operated very efficiently in the vicinity of at least one of the three most efficient operating points depending on a power requirement.
- the first module for supplying at least a first independent electrical component and the second module for supplying at least one second independent electrical component with electrical energy are set up.
- the first module is in particular designed to supply at least one first and the second module is in particular configured to supply a second electrical machine.
- the first module for supplying a first independent electrical component, in particular a first electric machine is set up. It is further provided that the second module for supplying at least a second electrical component, in particular a second electric machine, is set up.
- an electrical system for supplying two independent electrical components is provided.
- the electrical system is an electric drive system.
- the two modules are two drive modules.
- a first drive module comprises at least one first inverter with the first th switching element and a second drive module comprises at least a second inverter with the second switching element.
- An electric drive system is provided with two drive modules.
- a first drive module comprises a first inverter, which comprises at least the first switching element.
- a second drive module comprises a second inverter, which comprises at least the second switching element.
- a drive system which comprises two inverters, wherein the first inverter comprises the first switching element of the first semiconductor material, and the second inverter comprises the second switching element of the second semiconductor material.
- the two inverters are in particular designed for the common supply of an electrical component or for the respective supply of an independent electrical component.
- the electrical component may be an electric machine. This can be supplied together, for example by means of parallel connection of the inverters. Or the inverters each supply an independent electrical machine.
- a drive system is provided whose inverters have different electrical or chemical properties.
- the first drive module for supplying a first electric machine for driving a vehicle is set up and the second drive module for supplying a second electric machine for driving the vehicle.
- An electrical system for an electric drive of a vehicle is provided.
- a first drive module is provided for supplying a first electric machine for driving the vehicle.
- a second drive module is provided for the supply of a second electric machine for driving the vehicle.
- a vehicle has a first and a second electric machine, which can be operated for driving the vehicle either individually or jointly.
- a vehicle in which an electric machine for driving the axle is attached to different drive axles.
- an internal combustion engine can deliver torque to at least one of the drive axles.
- a Torquesplitantrieb in which at least one of the two axes can be driven by a planetary gear of two drive units.
- an electric drive system which can be operated fail-safe and more efficient due to the larger number of drive machines. More efficient operation is possible, in particular, if the different electrical machines have different power ratings.
- the electrical system can thus be operated particularly efficiently in the vicinity of one of the three resulting optimum operating points.
- the electrical system is an electrical transducer system.
- the two modules are two voltage converter modules, wherein a first voltage converter module comprises at least one first DC-DC converter with the first switching element, and a second voltage converter module comprises at least one second DC-DC converter with the second switching element.
- a transducer system which includes at least two voltage transformer modules.
- a first DC-DC converter comprises the first switching element and a second DC-DC converter comprises the second switching element.
- the two DC-DC converters are in particular designed for the common supply of an electrical component or for the respective supply of an independent electrical component.
- the electrical component may be, for example, an electrical network or subnet or a DC consumer. Such a network or a consumer can be supplied together, for example by means of parallel connection or series connection of the DC-DC converter. Or the DC-DC converters each supply an independent electrical load or electrical network.
- an electrical converter system is provided which, as described above, can be operated particularly efficiently.
- the first and second voltage converter module for converting electrical energy at least an energy source for supplying an electrical network or subnetwork, in particular a traction network or a vehicle electrical system of a vehicle, is set up.
- An electrical transducer system is provided which is adapted to convert the energy of at least one energy source.
- An energy source is, for example, a battery, a fuel cell, a supply network or a different kind of energy module.
- the voltage converter modules convert the energy of this energy source to supply an electrical network or subnetwork.
- the electrical network or subnetwork is in particular a traction network or high-voltage network of a vehicle or a vehicle electrical system of a vehicle.
- Such a vehicle electrical system is usually operated in the low voltage range at 12 volts or 48 volts, in particular below 48 volts.
- the invention comprises a vehicle with a described electrical system.
- a vehicle is thus provided with an electrical system, which can be operated efficiently.
- the invention relates to a method for operating an electrical system having at least two modules, wherein a module comprises at least one switching element.
- the first module comprises a first switching element of a first semiconductor material and the second module comprises a second switching element of a second semiconductor material.
- the first module is operated with a first operating mode and the second module with a second operating mode.
- the one switching element Due to the different semiconductor materials used and their different electrical properties of the first and second switching element, it is possible to operate the one switching element with a different operating mode than the other, without causing damage to the modules or switching elements due to overvoltage or overheating. Under operating mode, for example, different driving methods, Signal paths, modulation types or switching frequencies to understand.
- a method for operating an electrical system is thus provided in which the individual modules are operated optimally depending on their electrical and chemical properties.
- the first module is operated at a lower switching frequency than the second module.
- a substantially lower switching frequency is specified than for the operation of the second module.
- a switching frequency is predetermined for the operation of the first module, which is at least 10% less than the switching frequency, which is specified for the operation of the second module.
- the first module is operated with a first drive method, in particular pulse width modulated, and the second module with a second drive method, in particular in block mode.
- the invention relates to a computer program that is configured to carry out the methods described so far.
- the invention comprises a machine-readable storage medium on which the computer program described is stored.
- FIG. 1 A first figure.
- an electrical converter system for supplying a vehicle electrical system, for example a vehicle,
- an electrical converter system for supplying a traction network, such as a vehicle.
- the first module 200 includes at least a first switching element 210 made of a first semiconductor material.
- the second module 300 comprises at least one second switching element 310 made of a second semiconductor material.
- an interconnection of the electrical system is shown, so that an input voltage Ui can be tapped on the input side, and an output voltage Uo can be tapped on the output side.
- the circuit shown by way of example and simplified there is the possibility of transmitting an electrical power from the input side of the electrical system to the output side of the electrical system by closing the at least one switching element of one of the two modules.
- the first switching element 210 is made of a different semiconductor material than the second switching element 310, the losses, in particular switching and line losses, which occur during the power transmission, are differently. Due to the different characteristics of the first and the second Druckelemetes particularly advantageously the first switching element 210 is operated at a different switching frequency than the second switching element 310. This may be particularly advantageous for a high efficiency of the overall system in partial load operating conditions, especially in vehicle drives an essential and range-relevant operating state represent.
- semiconductor materials with different band gaps are used as different semiconductor materials.
- an element semiconductor made of silicon is used for the first switching element 210
- a compound semiconductor made of silicon carbide or gallium nitride is used for the second switching element 310.
- modules are advantageously provided in particular in an electrical system 100 with different levels of electrical power.
- a first module 200 with lower performance and lower losses is used with another module 300 with high electrical power and high electrical losses.
- the manufacturing costs for the module with the lower losses are acceptable due to the design for low electrical power.
- a second module is provided with favorable conventional technology, which, however, causes higher losses at lower costs.
- FIG. 2 likewise shows a schematic representation of an electrical system 100 having a first module 200 and a second module 300.
- the first module 200 is for supplying at least one first independent electrical component 400 and the second module 300 for supplying at least one second independent electrical component 500 intended.
- Embodiment is provided in particular for the operation of two electrical components 400, 500, one of which is again designed for continuous operation, and the other for a relatively short-term operation.
- the first switching element 210 made of a first semiconductor material is correspondingly used again in the first module 200
- the second switching element 310 is made of a second semiconductor material in the second module 300.
- FIG. 3 shows an electrical system 100, which is designed as an electric drive system 110.
- the system 100 comprises a first module 200 and a second module 300, which may be used as a first drive module 250 with a first inverter and as a second drive module 350 with a second
- the first inverter comprises at least the first switching element 210, wherein in the drawing comprises a three-phase inverter with two half-bridges comprising the switching elements 210_1 .., 210_6. These first switching elements are in turn made of a first semiconductor material.
- the second inverter accordingly comprises switching elements 310_1 .., 310_6.
- the first inverter of the first drive module 250 supplies a first electrical component 400, which in this exemplary embodiment is designed as a first electrical machine 410.
- the second drive module 350 supplies a second electrical component 500, which in this exemplary embodiment is designed as an electric machine 510.
- the drive module it makes sense to design the drive module differently depending on the power requirement and duration of use and accordingly to select switching elements which are manufactured from different semiconductor materials and correspondingly have different losses during switching and during operation.
- the electrical machines depending on the power requirements and duration of use can be designed differently and corresponding machine types (for example, synchronous or asynchronous, electrically or permanent magnetically excited machines), types or materials are selected, which have correspondingly different losses during operation.
- a first input voltage Uil and a second input voltage Ui2 are shown by way of example in FIG.
- a parallel supply of both inverters with a common input voltage Ui is possible.
- Such a double inverter can be installed in a common housing.
- This can advantageously also an optionally shared input filter and DC link capacitor and the microcontroller with two power amplifiers, which can be adapted to the performance of their application, integrated.
- one of the two inverters uses the highly efficient SiC technology, while the power unit designed for the boost drive uses classic Si-IGBT technology.
- the double inverter may have two connections for electrical machines in addition to the connection to the vehicle battery and the vehicle control unit.
- the double inverter can also be integrated in the housing of the electrical machine.
- the complexity for the cabling of the components is reduced with higher integration.
- FIG. 4 shows a vehicle 600 with a first drive axle 610 and drive tire 630 connected thereto, and a second drive axle 620 with drive wheels 630 likewise connected thereto.
- An electric drive system not shown in the drawing comprises the two drive modules 250 and 350, which a common power source, such as a high-voltage battery 700, are supplied.
- a common power source such as a high-voltage battery 700
- two power sources Uil, Ui2, as shown in FIG. 3 can be provided to supply the drive modules 250 and 350.
- the first drive module 250 supplies electrical energy to a first electric machine 410 for driving the first drive axle 610 of the vehicle.
- the second drive module 350 supplies a second electric machine 510, which in turn drives the second drive axle 620 of the vehicle.
- cycle-relevant partial load operating conditions eg, less than 20% of the peak vehicle power installed for vehicle acceleration or vehicle ascending capability
- Low loads are covered with the electrical system 100 with two modules 200, 300 by means of a specially dimensioned and efficiency-optimized module 200, 300. This increases the efficiency of the entire drive system.
- the peak power required for acceleration and climbing capability is provided by operating both modules 200, 300
- FIG. 5 schematically shows an electrical system 100 which is designed as an electrical converter system 120.
- the electrical transducer system includes a first module 200 that is configured as a voltage converter module 270.
- the second module 300 is designed as a second voltage converter module 370.
- the first voltage converter module 270 comprises a first switching element 210 made of a first semiconductor material
- the second voltage converter module comprises a second switching element of a second
- the voltage converter modules 270 and 370 are designed as DC voltage converters for converting a first input voltage Uil via the first voltage converter 270 into a first output voltage Uol.
- a second input voltage Ui2 is converted into a second output voltage Uo2.
- the first voltage converter module 270 or 6 shows an electrical system 100 which, as in FIG. 5, is designed as an electrical converter system with two voltage converter modules 270 and 370.
- an input voltage Ui of a battery 700 is converted by means of the electrical converter system into an output voltage Uo, which is used to supply an electrical network, in particular an on-board network 900, of a vehicle having a large number of consumers.
- Ehern 910, 920 is provided.
- Both the input voltage Ui and the output voltage Uo of the individual voltage converter modules 270, 370 are connected in parallel in this exemplary embodiment. Therefore, a power transfer from the input side of the electrical system, both via a single voltage converter module 270, 370 or, if necessary, by means of both
- Voltage converter modules 270, 370 take place.
- FIG. 7 also shows an electrical system 100, which is likewise designed as an electrical converter system 120.
- the electrical conversion system supplies an electrical network 800.
- the electrical network 800 is a traction network for propulsion of a vehicle, wherein the output voltage Uo serves as an input voltage of an inverter 810 which supplies an electric drive machine 820 with a polyphase AC voltage.
- this inverter 810 can advantageously be constructed as an electrical system 100 with a first module 200 and a second module 300, or a parallel-connected first inverter 250 and a second inverter 350, for the common supply of the electrical machine 820.
- FIG. 8 shows a flowchart 950 of a method for operating an electrical system 100 with at least two modules 200, 300. The method starts with step 960.
- the electrical system 100 is operated with the first module 200 operating in a first mode and the second module 300 operating in a second mode.
- the switching frequencies with which the modules 200, 300 are controlled can differ significantly, for example 2 kHz to 10 kHz and 50 kHz or depending on the application, for example in DC-DC converters, 10 kHz and 300 kHz.
- different types of modulation can be used to control the modules 200, 300.
- the method ends.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Inverter Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016207286.2A DE102016207286A1 (de) | 2016-04-28 | 2016-04-28 | Elektrisches System mit mindestens zwei Modulen |
PCT/EP2017/055506 WO2017186390A1 (de) | 2016-04-28 | 2017-03-09 | Elektrisches system mit mindestens zwei modulen |
Publications (1)
Publication Number | Publication Date |
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EP3448712A1 true EP3448712A1 (de) | 2019-03-06 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP17709952.0A Withdrawn EP3448712A1 (de) | 2016-04-28 | 2017-03-09 | Elektrisches system mit mindestens zwei modulen |
Country Status (5)
Country | Link |
---|---|
US (1) | US11515808B2 (de) |
EP (1) | EP3448712A1 (de) |
CN (1) | CN109311403A (de) |
DE (1) | DE102016207286A1 (de) |
WO (1) | WO2017186390A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3474434B1 (de) | 2017-10-23 | 2021-12-29 | Audi Ag | Elektrisches antriebssystem |
CN109889032A (zh) * | 2019-03-12 | 2019-06-14 | 张家港氢芯电气***科技有限公司 | 氢燃料电池发动机用dc-dc升压*** |
JP7139391B2 (ja) * | 2020-07-27 | 2022-09-20 | 本田技研工業株式会社 | 給電制御システムおよび給電制御方法 |
DE102022201439A1 (de) | 2022-02-11 | 2023-08-17 | Zf Friedrichshafen Ag | Signalausgabe-Baustein zur Ansteuerung eines Gate-Treibers für eine Leistungselektronik |
DE102022206672A1 (de) | 2022-06-30 | 2024-01-04 | Siemens Mobility GmbH | Elektrisches Antriebssystem für ein Schienenfahrzeug |
DE102022206679A1 (de) * | 2022-06-30 | 2024-01-04 | Siemens Mobility GmbH | Elektrisches Antriebssystem |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4525809B2 (ja) * | 2008-07-28 | 2010-08-18 | トヨタ自動車株式会社 | 電源システムおよびそれを備えた車両、ならびに電源システムの制御方法 |
US8861235B2 (en) * | 2009-09-16 | 2014-10-14 | Mitsubishi Electric Corporation | Power converting apparatus |
KR101542641B1 (ko) * | 2011-09-23 | 2015-08-07 | 주식회사 엘지화학 | 배터리 충전 시스템 및 이를 이용한 충전 방법 |
US20140185346A1 (en) * | 2012-12-28 | 2014-07-03 | Eaton Corporation | Hybrid power devices and switching circuits for high power load sourcing applications |
US9397657B1 (en) * | 2014-07-24 | 2016-07-19 | Eaton Corporation | Methods and systems for operating hybrid power devices using multiple current-dependent switching patterns |
US10191531B2 (en) * | 2015-12-29 | 2019-01-29 | General Electric Company | Hybrid converter system |
-
2016
- 2016-04-28 DE DE102016207286.2A patent/DE102016207286A1/de not_active Withdrawn
-
2017
- 2017-03-09 US US16/096,793 patent/US11515808B2/en active Active
- 2017-03-09 EP EP17709952.0A patent/EP3448712A1/de not_active Withdrawn
- 2017-03-09 CN CN201780040143.7A patent/CN109311403A/zh active Pending
- 2017-03-09 WO PCT/EP2017/055506 patent/WO2017186390A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE102016207286A1 (de) | 2017-11-02 |
US11515808B2 (en) | 2022-11-29 |
WO2017186390A1 (de) | 2017-11-02 |
CN109311403A (zh) | 2019-02-05 |
US20210296890A1 (en) | 2021-09-23 |
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