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公开(公告)号：US20240339948A1
公开(公告)日：2024-10-10
申请号：US18627330
申请日：2024-04-04
发明人： Nima SAADAT
IPC分类号： H02P27/06
CPC分类号： H02P27/06
摘要： A power supply circuit in an inverter for driving an electrical machine includes a high-voltage branch with a high-voltage level, a low-voltage branch with a low-voltage level and a discharge branch with a discharge voltage level, wherein the high-voltage level is higher than the low-voltage level and the discharge voltage level. The high-voltage branch can be connected to the low-voltage branch via an operating DC/DC converter, and to the discharge branch via a discharge DC/DC converter. The discharge branch is different from the low-voltage branch. A low-voltage energy storage device is connected in the discharge branch. A method for using the power supply circuit includes, in a first operating mode, conducting current from the high-voltage branch via the operating DC/DC converter into the low-voltage branch, and in a second operating mode, conducting current from the high-voltage branch via the discharge DC/DC converter into the discharging branch.
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公开(公告)号：US20240339947A1
公开(公告)日：2024-10-10
申请号：US18626168
申请日：2024-04-03
CPC分类号： H02P27/06 , B60R16/03 , H02P2201/07
摘要： A power supply circuit in an inverter for driving an electrical machine has a high-voltage branch with a high-voltage level and a low-voltage branch with a low-voltage level, the high-voltage level being higher than the low-voltage level, the high-voltage branch being connected to the low-voltage branch via an operating DC/DC converter, the low-voltage branch having a supply branch and a mains branch, the high-voltage branch being connected to the mains branch via a discharge DC/DC converter. A method for operating the power supply circuit includes, in a first operating mode conducting current from the high-voltage branch via the operating DC/DC converter into the supply branch, and in a second operating mode, conducting current from the high-voltage branch via the discharge DC/DC converter into the mains branch.
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公开(公告)号：US20240298417A1
公开(公告)日：2024-09-05
申请号：US18588593
申请日：2024-02-27
CPC分类号： H05K7/14329 , H05K1/0263 , H05K7/20909 , H05K2201/10272
摘要： A half-bridge switch arrangement has a high-side switch having a plurality of parallel-connected first semiconductor switching elements, a low-side switch having a plurality of parallel-connected second semiconductor switching elements, a positive busbar, to which a terminal of each of the first semiconductor switching elements of the high-side switch is electrically connected, a negative busbar, to which a terminal of each of the second semiconductor switching elements of the low-side switch is electrically connected, and a heat sink, the heat sink having a recess and two plateau sections which are located in an elevated position relative to the recess, the recess being bounded by the two plateau section, wherein the first semiconductor switching elements and the second semiconductor switching elements are arranged on an upper side of the two plateau sections, wherein the positive busbar and the negative busbar are arranged one above the other within the recess.
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公开(公告)号：US20240178781A1
公开(公告)日：2024-05-30
申请号：US18524293
申请日：2023-11-30
发明人： Nima SAADAT , Murugaperumal DEVARAJA , Christian RIECKEN , Timm LOHMANN , Kaveh HAGHVERDI , Christian STIGLER , Felix EGBERT
摘要： An activation system for operating an electric machine includes a control circuit device for activating a rotor winding, and having a highside switch, a semiconductor component, and a de-excitation switch. A first terminal of the rotor winding is connectable to a positive supply terminal via the highside switch and to a negative supply terminal via the semiconductor component. A second terminal of the rotor winding is connectable to the negative supply terminal via the de-excitation switch. The activation system is configured to attain a secure state, when at least one fault is present, by disconnecting the rotor winding from the positive supply terminal and/or by de-exciting the rotor winding. A diagnosis may be carried out using an additional highside switch supplied with power via another activation circuit, and/or a fault detection circuit is provided, whose output signal does not change during a de-excitation.
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公开(公告)号：US10955446B2
公开(公告)日：2021-03-23
申请号：US16094735
申请日：2017-04-03
发明人： Arunkumar M S , Julian Roesner
摘要： A method for ascertaining phase currents of an electric machine including a converter and stator including stator windings (phase number of at least three), in which the phase currents of measuring phases (at least two), are measured, the phase currents being measured in a measuring interval when the active switching elements of the measuring phases in a lowside path of the converter are activated in a switching interval delimited by a switching-on point-in-time and switching-off point-in-time, the phase currents of the remaining phases being determined arithmetically from the measured phase currents so that the measured phase currents, a spatial angle of the measuring phases, and a spatial angle of the remaining phases are used for arithmetic determination, in which the measuring interval is selected to be with respect to time outside a switching-on point-in-time or switching-off point-in-time of at least one of the active switching elements of the stator phases.
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公开(公告)号：US20190149079A1
公开(公告)日：2019-05-16
申请号：US16097361
申请日：2016-11-30
发明人： Julian ROESNER
CPC分类号： H02P27/12 , H02P3/18 , H02P21/22 , H02P21/30 , H02P23/0027 , H02P23/20 , H02P25/024 , H02P25/22 , H02P27/06 , H02P27/08
摘要： The invention relates to a method for switching off a multi-phase electric machine (110) in a motor vehicle, the multi-phase electric machine (110) comprising a rotor having a rotor winding (101) and a stator having a multi-phase stator winding (110a), wherein in a block mode (210) of the electric machine (110) a parameter influencing a pole wheel voltage vector (Up) of a pole wheel voltage is adjusted such that the pole wheel voltage reaches a first threshold value (S1), wherein the block mode (210) is deactivated when the first threshold value (S1) is reached and a PWM mode (220) for applying a phase voltage with a phase voltage vector (Us) is activated, wherein the phase voltage vector (Us) and the pole wheel voltage vector (Up) are varied in PWM mode (220) until the parameter influencing the pole wheel voltage reaches a further threshold value (S2), wherein the phase voltage is switched off when the further threshold value (S2) is reached. Furthermore, the invention relates to a computing unit (112) configured to carry out the method.
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公开(公告)号：US10040357B2
公开(公告)日：2018-08-07
申请号：US15069626
申请日：2016-03-14
发明人： Axel Reuter , Oliver Dieter Koller
摘要： A method for operating a motor vehicle having a vehicle electrical system, which includes at least one electrical or electronic component, which experiences a load during an operation of the motor vehicle, an accumulated load of the at least one component being ascertained, at least one type of damage contributing to the load being ascertained, a service life of the at least one component to be expected as a result of the ascertained accumulated load being ascertained, and at least one variable damaging the at least one component during operation, which is selected as a function of the at least one type of damage, being changed in a load-reducing direction if the service life to be expected of the at least one component deviates from a setpoint service life.
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公开(公告)号：US20180145568A1
公开(公告)日：2018-05-24
申请号：US15817681
申请日：2017-11-20
发明人： Oliver CAPEK
CPC分类号： H02K13/10 , H01R39/04 , H01R39/18 , H02K7/20 , H02K13/006
摘要： A commutation apparatus for an electric machine, having brushes with a front face which lies against the peripheral surface of a collector which has a plurality of collector segments separated by gaps, is designed in such a manner that a contact edge which runs obliquely to the gaps is formed on the front face of at least one brush.
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公开(公告)号：US20240230421A1
公开(公告)日：2024-07-11
申请号：US18409092
申请日：2024-01-10
发明人： Wei LI
摘要： The invention relates to a sensor holder (130) for use with an electrical machine unit, the electrical machine unit comprising an electrical machine having a rotor, a stator and a fan (118), and a power converter for the electrical machine, the power converter being attached to the electrical machine, wherein the sensor mount (130) comprises a first sensor housing part (132) and a second sensor housing part (136), wherein the first sensor housing part (132) is configured to receive a rotor position sensor (140), and wherein the second sensor housing part (136) is configured to receive a temperature sensor (142) for measuring a temperature of the electrical machine (110), in particular in the vicinity of the fan (118).
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公开(公告)号：US20210141022A1
公开(公告)日：2021-05-13
申请号：US17096395
申请日：2020-11-12
发明人： Henning STÖCKLEIN , Kevin KUBELKA , Jens MÜLLER , Peng QIAN , Matthias CWIK , Nima SAADAT
IPC分类号： G01R31/36 , G01R31/388
摘要： The present invention relates to a method for determining the state of charge of a vehicle battery (150) of a vehicle, a starter relay of a starting device (100) for an internal combustion engine of the vehicle for engaging a starter pinion in a ring gear of the internal combustion engine having a first winding (121) and a second winding (122) which can be controlled independently of one another, the first winding (121) being controlled in predetermined control states and voltage values that are established in the course of these control states being determined and the state of charge of the vehicle battery (150) being determined depending on the determined voltage values.
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