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公开(公告)号：US12255553B2
公开(公告)日：2025-03-18
申请号：US18010471
申请日：2021-06-16
Applicant: AVL List GmbH
Inventor： Erwin Reisinger , Martin Schmidt
IPC: H02M7/539 , H02M1/00 , H02M7/217 , H02M7/5395 , H02P27/06
Abstract: Measuring arrangement for determining the bridge currents of a switched electrical converter unit (2), in which, in a modulation process, at least two electronic half bridges (3, 3′) are switched with temporally offset actuation signals by a control unit (4), comprising a measuring unit (1) that is connected to current sensors (6, 6′), wherein the current sensors (6, 6′) are arranged in the output or input lines of the half bridges (3, 3′) in order to measure the bridge currents, and the measuring unit (1) is connected to the control unit (4) for temporal synchronisation, wherein the measuring unit (1) is designed to define measurement times (8, 8′) of the current sensors (6, 6′) which are temporally synchronised with the actuation signals of the half bridges (3, 3′), as well as an inverter arrangement having such a measuring arrangement.
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2.发明授权公开(公告)号：US10962445B2
公开(公告)日：2021-03-30
申请号：US16466986
申请日：2017-12-05
Applicant: AVL LIST GmbH
Inventor： Klaus Pfeiffer , Martin Schmidt
IPC: G01M17/007 , G01M13/025
Abstract: The present teaching includes a speed control of a side shaft of a drive train connected to a dynamometer on a drive train test stand in which a torque (MFxi) caused by the longitudinal force (FXi) calculated in a simulation model is additionally transferred to the control unit, and from this a compensation torque (MKi) is calculated in the control unit as a function of the longitudinal force (FXi) caused by the torque (MFxi) and a deviation (AJi) between a moment of inertia (JBi) of the dynamometer and a moment of inertia (JRi) of the simulated vehicle wheel, the control unit calculates a torque (MREi,) from the setpoint speed (nBi,set) with a speed controller and a torque (MBi,soll) to be set with the dynamometer is calculated as the sum of the compensation torque (MKi) and the torque (MREi) calculated by the speed controller and set by the dynamometer.
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公开(公告)号：US20180143101A1
公开(公告)日：2018-05-24
申请号：US15536379
申请日：2015-12-22
Applicant: AVL LIST GmbH
Inventor： Felix Pfister , Martin Schmidt , Clemens Reitze
IPC: G01M17/007
CPC classification number: G01M17/0074
Abstract: To make the handling of a tire model for controlling a test run on a test bench simpler and more flexible and thus more practicable, it is provided that at least one longitudinal velocity of a tire is calculated in a first simulation unit with a first simulation model, and the longitudinal velocity is provided to a second simulation unit, and a longitudinal force and/or a rolling resistance torque of the tire are calculated with a second simulation model in the second simulation unit on the basis of the longitudinal velocity, and said longitudinal force and/or rolling resistance torque are used to calculate at least one target dyno value for a drive control unit of a load machine of the test bench.
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公开(公告)号：US20210096040A1
公开(公告)日：2021-04-01
申请号：US16956487
申请日：2018-12-21
Applicant: AVL LIST GMBH
Inventor： Maximilian Bier , Martin Schmidt
Abstract: Aspects of the present disclosure are directed to a method for controlling the torque of a drive unit on a test stand. Accordingly, one embodiment of the present disclosure is a method for controlling an inner effective torque of the drive unit via a unit controlling unit, wherein an inner effective desired torque is determined from the given courses of the rotational speed and the torque of the drive unit and a known mass inertia of the drive unit, and an inner effective actual torque is determined during the operation of the drive unit on the test stand from measured values of the load machine and/or of the drive unit and/or of the connecting shaft and/or of a known mass inertia of the drive unit.
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公开(公告)号：US11863085B2
公开(公告)日：2024-01-02
申请号：US17909046
申请日：2021-03-05
Applicant: AVL List GmbH
Inventor： Erwin Reisinger , Martin Schmidt
IPC: H02M7/5387 , H02M1/00 , H02M1/12
CPC classification number: H02M7/5387 , H02M1/0043 , H02M1/123 , H02M1/126
Abstract: The invention relates to a converter assembly for converting a DC voltage from a DC voltage source, e.g. a battery, a fuel cell or a DC voltage intermediate circuit, into an N-phase AC voltage, e.g. for supplying an N-phase electric machine, comprising a connected inverter unit (1) having a number M of electronically controllable half bridges (2, 2′, 2a, 2a′, 2b, 2b′) for each of the N phases, wherein M is greater than one, a control unit (3) controlling the half bridges (2, 2′, 2a, 2a′, 2b, 2b′) which is designed to activate the half bridges (2, 2′, 2a, 2a′, 2b, 2b′) in a phase-offset manner with a switching frequency fT, wherein the phases are connected to a respective winding (5, 5′, 5″) of a common-mode choke (10) with a common magnetic core for damping electrical common-mode interference, and wherein the outputs of the half bridges (2, 2′, 2a, 2a′, 2b, 2b′), supplying said phases, are interconnected via interleaving chokes (4, 4′, 4a, 4a′, 4b, 4b′), wherein a first resistance-damped capacitor circuit (6) is provided at the output of the interleaving chokes (4, 4′, 4a, 4a′, 4b, 4b′) forming a first LC filter stage (8), and a second resistance-damped capacitor circuit (7) is provided at the output of the common-mode choke (5, 5′, 5″) forming a second LC filter stage (9).
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Patent Agency Ranking
公开(公告)号：US20210088410A1
公开(公告)日：2021-03-25
申请号：US16956491
申请日：2018-12-21
Applicant: AVL LIST GMBH
Inventor： Maximilian Bier , Martin Schmidt
Abstract: Aspects of the present disclosure are directed to controlling an inner effective torque or an effective torque of a drive unit via a unit controlling unit. In some embodiments, the control method may include providing desired values for the inner effective torque or the effective torque and determining actual values for the inner effective torque or the effective torque during operation of the drive unit on a test stand, and in that actuating dynamics of the drive unit are taken into account in the control by means of a transfer function by correcting the desired values of the control with the transfer function or in that for controlling the inner effective torque or the effective torque of the drive unit, a feed forward control of a manipulated variable of the drive unit is used.
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公开(公告)号：US12181367B2
公开(公告)日：2024-12-31
申请号：US17629308
申请日：2020-07-24
Applicant: AVL LIST GMBH , PIEZOCRYST ADVANCED SENSORICS GMBH
Inventor： Martin Schmidt , Lukas Quurck , Jakob Moder
IPC: G01M1/24 , G01M1/08 , G01M13/025
Abstract: The invention relates to a method and a drivetrain test bench for detecting an imbalance and/or a misalignment of at least one shaft assembly of a drivetrain during operation on a test bench, wherein a first piezoelectric force sensor is arranged in a flow of force generated by a transmission of power between a load unit of the test bench and a drive unit of the drivetrain or the test bench, and which is transmitted by of the shaft assembly, wherein the first force sensor realizes a first force measurement in a first plane and/or perpendicular to the first plane as is intersected by a rotational axis of the shaft assembly and preferably at least substantially perpendicular to the rotational axis, and wherein the first force measurement and/or a rotational angle determination for the shaft assembly are used to detect an imbalance, and/or a misalignment of the shaft assembly.
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公开(公告)号：US11385132B2
公开(公告)日：2022-07-12
申请号：US16956487
申请日：2018-12-21
Applicant: AVL LIST GMBH
Inventor： Maximilian Bier , Martin Schmidt
Abstract: Aspects of the present disclosure are directed to a method for controlling the torque of a drive unit on a test stand. Accordingly, one embodiment of the present disclosure is a method for controlling an inner effective torque of the drive unit via a unit controlling unit, wherein an inner effective desired torque is determined from the given courses of the rotational speed and the torque of the drive unit and a known mass inertia of the drive unit, and an inner effective actual torque is determined during the operation of the drive unit on the test stand from measured values of the load machine and/or of the drive unit and/or of the connecting shaft and/or of a known mass inertia of the drive unit.
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公开(公告)号：US11243143B2
公开(公告)日：2022-02-08
申请号：US16956491
申请日：2018-12-21
Applicant: AVL LIST GMBH
Inventor： Maximilian Bier , Martin Schmidt
Abstract: Aspects of the present disclosure are directed to controlling an inner effective torque or an effective torque of a drive unit via a unit controlling unit. In some embodiments, the control method may include providing desired values for the inner effective torque or the effective torque and determining actual values for the inner effective torque or the effective torque during operation of the drive unit on a test stand, and in that actuating dynamics of the drive unit are taken into account in the control by means of a transfer function by correcting the desired values of the control with the transfer function or in that for controlling the inner effective torque or the effective torque of the drive unit, a feed forward control of a manipulated variable of the drive unit is used.
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公开(公告)号：US12249827B2
公开(公告)日：2025-03-11
申请号：US17908923
申请日：2021-03-05
Applicant: AVL List GmbH
Inventor： Erwin Reisinger , Martin Schmidt
Abstract: The invention relates to a converter assembly comprising at least two converters (7, 7′) and a control unit (1) connected to the converters (7, 7′), wherein the control unit (1) is designed, continuously or at discrete time intervals, to transmit to the converters (7, 7′) their permissible electrical power range, in particular their minimum power value Pmin and/or their maximum power value Pmax, to determine the current power balance of the individual converters (7, 7′) or to receive it from same, and to adjust the permissible electrical power range of the converters (7, 7′) in such a way that the power balance of the entire converter assembly does not leave a predefined range. The invention also relates to a method for operating a converter assembly of this type.
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