EP3811483A1 - Schutzvorrichtung für einen halbleiterschalter eines elektromotors einer elektromechanischen kraftfahrzeuglenkung - Google Patents
Schutzvorrichtung für einen halbleiterschalter eines elektromotors einer elektromechanischen kraftfahrzeuglenkungInfo
- Publication number
- EP3811483A1 EP3811483A1 EP19731980.9A EP19731980A EP3811483A1 EP 3811483 A1 EP3811483 A1 EP 3811483A1 EP 19731980 A EP19731980 A EP 19731980A EP 3811483 A1 EP3811483 A1 EP 3811483A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- motor vehicle
- power steering
- vehicle power
- respect
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
- B62D5/0484—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures for reaction to failures, e.g. limp home
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
- B62D5/0487—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures detecting motor faults
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters
- H02H7/1227—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. DC/AC converters responsive to abnormalities in the output circuit, e.g. short circuit
-
- 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
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
- H02M7/53875—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current with analogue control of three-phase output
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
- H03K17/08142—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in field-effect transistor switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0805—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for synchronous motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
- H02H7/0838—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements with H-bridge circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
- H02H7/222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
Definitions
- the present invention relates to an electromechanical motor vehicle power steering system with the features of the preamble of claim 1.
- Electromechanical steering systems usually have a permanently excited synchronous motor as a servo motor.
- Servomotors of this type are controlled by a controller via a set of MOSFETs, with a total of six MOSFETs being provided for three phase windings.
- One MOSFET each switches the assigned phase winding to the on-board voltage or the ground potential. This takes place at a high frequency, so that in the
- Phase winding the temporal mean acts as effective voltage.
- Permanently excited synchronous motors have the property of electrical faults such as short circuits in the motor or in the
- an electromechanical motor vehicle power steering system with a multi-phase, permanently excited electric motor which can be operated via a control system and supply lines from a direct voltage system of a motor vehicle, the electric motor having at least three phase windings which are connected to a driver circuit via lines, wherein the driver circuit connects each of the lines via a respective first MOSFET of a first group to the positive supply line and via a respective second MOSFET of a second group to the negative supply line as a function of the controller, and wherein each line has a MOSFET as a safety switch which is connected to a Body diode is arranged in the forward direction with respect to the vehicle electrical system, and each
- Safety switch has a protective device which has at least one suppressor diode connected in parallel with the respective safety switch and arranged in the forward direction with respect to the on-board electrical system, and one for each phase winding with respect to the at least one Suppressor diode in series and with respect to the vehicle electrical system in the reverse direction diode includes.
- the suppressor diode can lead to overvoltages past the safety switch and thus prevent damage when switching. The in relation to the electrical system in the reverse direction
- switched diodes prevent an induction current from short-circuiting the phases and the current flowing in the direction of the phases.
- the at least one suppressor diode is preferably unidirectional.
- the at least one suppressor diode is preferably designed in such a way that when an induction current exceeds a voltage threshold, the suppressor diode conducts the induction current and the current is thus guided past the safety switches.
- the MOSFETs of the first group and the second group with their body diodes are preferably arranged in the reverse direction with respect to the DC voltage on-board network.
- the diodes of the protective device which are connected in the blocking direction with respect to the on-board electrical system are preferably Schottky diodes, which are practically none
- the protective devices are arranged in power line paths that connect the positive supply line or the negative supply line to a common connection point of the corresponding safety switch and the associated motor winding.
- the electromechanical motor vehicle power steering system can have a suppressor diode in the power line paths for each phase winding or a single suppressor diode which is arranged in front of a common connection point of the power line paths.
- the use of a single suppressor diode is less expensive. Depending on the power of the motor, it must be decided whether a single suppressor diode is sufficient or whether per
- It is preferably a three-phase, permanently excited Electric motor.
- Fig. 1 an electromechanical power steering in a schematic
- Fig. 3 another circuit for controlling a permanently excited
- Synchronous motor with six MOSFETs for controlling the motor current and a protective device
- FIG. 1 schematically shows an electromechanical motor vehicle power steering system 1 with a steering wheel 2 which is coupled to an upper steering shaft 3 in a rotationally fixed manner.
- the driver introduces a corresponding torque into the steering shaft 3 as a steering command via the steering wheel 2.
- Torque is then transmitted to a steering pinion 5 via the upper steering shaft 3 and lower steering shaft 4.
- the pinion 5 meshes in a known manner with a toothed segment of a toothed rack 6.
- the toothed rack 6 is mounted in a steering housing so as to be displaceable in the direction of its longitudinal axis.
- the rack 6 is connected to tie rods 7 via ball joints, not shown.
- the tie rods 7 themselves are in a known manner via steering knuckles, each with a steered wheel 8 Motor vehicle connected.
- a rotation of the steering wheel 2 leads via the connection of the steering shaft 3 and the pinion 5 to a longitudinal displacement of the rack 6 and thus to a pivoting of the steered wheels 8.
- the steered wheels 8 experience a reaction via a roadway 80 which counteracts the steering movement. To pivot the wheels 8, a force is consequently required which requires a corresponding torque on the steering wheel 2.
- An electric motor 9 of a servo unit 10 is provided to assist the driver in this steering movement.
- the upper steering shaft 3 and the lower steering shaft 4 are coupled to one another in a torsionally elastic manner via a torsion bar, not shown.
- a torque sensor unit 11 detects the rotation of the upper steering shaft 3 relative to the lower steering shaft 4 as a measure of the torque that is manually exerted on the steering shaft 3 or the steering wheel 2.
- a control unit 12 calculates the steering assistance provided by the servo unit 10 for the driver.
- the servo unit 10 can be coupled as an auxiliary support device 10, 100, 101 either to a steering shaft 3, the steering pinion 5 or the rack 6.
- the respective auxiliary power support 10, 100, 101 carries an auxiliary torque into the steering shaft 3, the steering pinion 5 and / or into the
- auxiliary support devices 10, 100, 101 shown in FIG. 1 show alternative positions for their arrangement. Usually only one of the positions shown is one
- Fig. 2 shows the basic circuit of a power section of the control unit 12.
- the supply line 13+ is the positive pole of the supply line
- the supply line 13- is connected to the negative pole of the supply line or the ground connection of the on-board electrical system of the motor vehicle, which in the usual manner DC voltage with negative ground works.
- a first group of MOSFETs 14 comprises three MOSFETs 14u, 14v and 14w
- a second group 15 of a total of three further MOSFETs 15u, 15v and 15w is for the application of the phase windings u, v and w Ground potential provided.
- the two groups 14 and 15 feed a total of three lines 16, 17 and 18, which are each assigned to a phase u, v, w.
- the MOSFETs of the first group 14 and the second group 15 are provided as drivers. These driver MOSFETs of groups 14 and 15 are usually connected in such a way that their intrinsic or body diodes are switched in the reverse direction with respect to the on-board voltage. Depending on the control signals, they connect the individual phase windings u, v and w either with the positive potential or with the ground potential. This takes place at a high frequency, so that in the individual windings u, v and w the time average as the operating voltage for generating a
- a smoothing capacitor 24 is provided between the two supply lines 13+ and 13-, which suppresses high-frequency repercussions from the electric motor and the MOSFETs arranged in front of it.
- a MOSFET from a third group is provided as a safety switch 19, 20, 21.
- the body diodes of the MOSFETs of the third group are switched in the forward direction with respect to the on-board voltage and are thus oriented counter to the diodes of the MOSFETs of the first and second groups 14, 15. In operation, this means that the individual MOSFETs of the third group are permanently switched on as long as the steering device is active and no interference occurs.
- the two lines 13+ and 13- are connected to one another. In this case, an induction voltage would arise in the windings u, v and w if the electric motor was forced to rotate by the external torque of the steering column.
- the induction current flows from a winding over the lines to the MOSFETs of the third group, the diodes of which are connected in the reverse direction.
- the groups of MOSFETs are each controlled via a control line 22 by means of a gate driver 23.
- the control electrodes (gates) of the individual MOSFETs are supplied with the necessary control signals.
- Each safety switch 19, 20, 21 has a protective device 25.
- the protective devices 25 are arranged in power line paths 26u, 26v, 26w, the supply line 13+, the one with the positive pole
- the protective device 25 in each case comprises one in the forward direction of a possible induction current
- Suppressor diodes also as Transient Voltage Suppressor Diode (TVS), Transient Absorption Zener Diode (TAZ),
- Transil diodes or breakover diodes (BOD) become conductive when a voltage threshold is exceeded. If there is a high induction current at which the voltage threshold of the suppressor diodes is exceeded, the current is led past the corresponding safety switch 19, 20, 21 through the parallel connection.
- the diode 27u, 27v, 27w connected in series is preferably a fast Schottky diode which assumes a conductive state more quickly than the MOSFET of the corresponding safety switch changes to a non-conductive state.
- the diodes 27u, 27v, 27w prevent a short circuit in the turns. In addition, they ensure that there is no current via the power line paths 26u, 26v, 26w in the direction of the
- FIG. 3 shows a further embodiment of the circuit, which essentially corresponds to the circuit of FIG. 2.
- a suppressor diode in the protective device 25 in each of the three power line paths 26u, 26v, 26w.
- a single suppressor diode 28 is provided, which is arranged in the current direction before splitting into the three power line paths. If there is a high induction current in one of the three windings u, v, w, in which the voltage threshold of the individual suppressor diode is exceeded, the current is cut through the parallel connection with the diode 27u, 27v assigned to the respective phase. 27w and the individual suppressor diode 28 on the corresponding
- Example of FIG. 2 in that it is a source-to-motor
- Configuration and the safety switches 19, 20, 21 are therefore installed the other way round.
- the diodes of the MOSFETs of the safety switches 19, 20, 21 are switched with respect to a possible induction current in the forward direction.
- the individual MOSFETs of the third group are switched to be permanently conductive as long as the steering device is active and no interference occurs.
- each safety switch 19, 20, 21 has a protective device 25.
- the protective devices 25 are arranged in power line paths 26u, 26v, 26w which connect the negative supply line 13-, which is connected to the negative pole, to a common connection point of the corresponding semiconductor switch 19, 20, 21 and the associated motor winding u, Connect v, w (load).
- the protective device 25 in each case comprises the diode 27u, 27v, 27w connected in the forward direction of a possible induction current and in each case one unidirectional suppressor diode 28u, 28v, 28w arranged in series therewith and switched in the blocking direction of a possible induction current. If there is a high induction current at which the voltage threshold of the suppressor diodes is exceeded, the current is switched to the corresponding one by the parallel connection
- FIG. 5 shows a further exemplary embodiment, which essentially corresponds to the circuit in FIG. 4, analogous to the examples in FIGS. 2 and 3, only a single suppressor diode 28 being provided which, in the direction of a possible induction current, before the splitting into the three current line paths 26u, 26v, 26w is arranged. It comes to a high
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018114977.8A DE102018114977A1 (de) | 2018-06-21 | 2018-06-21 | Schutzvorrichtung für einen Halbleiterschalter eines Elektromotors einer elektromechanischen Kraftfahrzeuglenkung |
| PCT/EP2019/065985 WO2019243310A1 (de) | 2018-06-21 | 2019-06-18 | Schutzvorrichtung für einen halbleiterschalter eines elektromotors einer elektromechanischen kraftfahrzeuglenkung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3811483A1 true EP3811483A1 (de) | 2021-04-28 |
Family
ID=66998406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19731980.9A Pending EP3811483A1 (de) | 2018-06-21 | 2019-06-18 | Schutzvorrichtung für einen halbleiterschalter eines elektromotors einer elektromechanischen kraftfahrzeuglenkung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11381194B2 (de) |
| EP (1) | EP3811483A1 (de) |
| CN (1) | CN112313850A (de) |
| DE (1) | DE102018114977A1 (de) |
| WO (1) | WO2019243310A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20250105709A1 (en) * | 2022-01-28 | 2025-03-27 | Brp Megatech Industries Inc. | Techniques for isolating electrical current from a motor in an electric power steering system |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003047287A (ja) * | 2001-07-26 | 2003-02-14 | Auto Network Gijutsu Kenkyusho:Kk | 保護回路 |
| US7009831B2 (en) * | 2004-02-27 | 2006-03-07 | Microsemi Corporation | PIN or NIP low capacitance transient voltage suppressors and steering diodes |
| JP5200628B2 (ja) * | 2008-03-31 | 2013-06-05 | 株式会社ジェイテクト | モータ制御装置および電動パワーステアリング装置 |
| GB0906020D0 (en) * | 2009-04-07 | 2009-05-20 | Trw Ltd | Motor drive circuitry |
| DE102010033440B4 (de) * | 2010-08-04 | 2013-10-24 | Thyssenkrupp Presta Aktiengesellschaft | Verfahren und Vorrichtung zur Sicherheitsabschaltung einer elektromechanischen Servolenkung |
| DE102010035149B4 (de) | 2010-08-23 | 2019-03-21 | Thyssenkrupp Presta Aktiengesellschaft | Sicherheitsschaltung für einen Elektromotor einer elektromechanischen Lenkung |
| DE102011055626B4 (de) * | 2011-11-23 | 2023-10-19 | Robert Bosch Gmbh | Phasentrennung bei eps-systemen |
| US9054618B2 (en) * | 2012-12-18 | 2015-06-09 | Infineon Technologies Austria Ag | Safety circuit and emergency power supply for gate control circuit |
| WO2014147694A1 (ja) | 2013-03-18 | 2014-09-25 | 日本精工株式会社 | 電動パワーステアリング装置 |
| JP6129677B2 (ja) * | 2013-08-05 | 2017-05-17 | 日立オートモティブシステムズ株式会社 | 電動モータの駆動制御装置 |
| US9653910B2 (en) * | 2014-11-14 | 2017-05-16 | Rockwell Automation Technologies, Inc. | Power structure diagnostic method and apparatus for improved motor drive diagnostic coverage |
| US9768607B2 (en) * | 2015-05-11 | 2017-09-19 | Infineon Technologies Ag | System and method for a multi-phase snubber circuit |
| DE102015122109B9 (de) * | 2015-12-17 | 2025-06-05 | Tdk-Micronas Gmbh | Spannungsfester Schalter |
| US10855183B1 (en) * | 2019-07-24 | 2020-12-01 | Infineon Technologies Ag | Method and device to operate a power switch in multiple modes |
-
2018
- 2018-06-21 DE DE102018114977.8A patent/DE102018114977A1/de not_active Withdrawn
-
2019
- 2019-06-18 EP EP19731980.9A patent/EP3811483A1/de active Pending
- 2019-06-18 WO PCT/EP2019/065985 patent/WO2019243310A1/de not_active Ceased
- 2019-06-18 US US17/252,437 patent/US11381194B2/en active Active
- 2019-06-18 CN CN201980040751.7A patent/CN112313850A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018114977A1 (de) | 2019-12-24 |
| US11381194B2 (en) | 2022-07-05 |
| CN112313850A (zh) | 2021-02-02 |
| WO2019243310A1 (de) | 2019-12-26 |
| US20210273597A1 (en) | 2021-09-02 |
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