专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

US20230369981A1 DC-TO-DC CONVERTER COMPRISING A CURRENT SENSOR ARRANGEMENT 审中-公开
公开(公告)号：US20230369981A1
公开(公告)日：2023-11-16
申请号：US18029140
申请日：2021-09-28
申请人： AVL List GmbH
发明人： Martin SCHMIDT , Erwin REISINGER
IPC分类号： H02M3/335 , H02M1/00 , H02M7/5387
CPC分类号： H02M3/33569 , H02M1/0009 , H02M7/53871 , H02M1/0043
摘要： DC-to-DC converter for converting an input direct voltage V1 into at least one variable output direct voltage Vout, comprising at least two switched converter units (2, 2′) each having at least one electronically controllable half bridge (3, 3′), and a control unit (4) which is designed to control the half bridges (3, 3′) in a modulation method with a variable period duration and a variable duty cycle, wherein a dedicated current sensor (6, 6′) is provided in each of the output lines (5, 5′) of the converter units (2, 2′), and the control unit (4) is designed to receive the amperages 12, 12′ of the converter units (2, 2′) measured by the current sensors (6, 6′), and to control the converter units (2, 2′) with duty cycles which differ from one another, in particular to activate individual converter units (2, 2′) with duty cycles which are reduced compared to other converter units (2, 2′), or not to activate these, wherein the output lines (5, 5′) of the converter units (2, 2′) are interconnected after the current sensors (6, 6′) so that the currents of the output lines (5, 5′) are summed, wherein the control unit (4) is designed to calculate the sum current Iout, and that the control until (4) is designed to compare the sum current Iout with the nominal currents IN, IN′ and to activate that converter unit (2, 2′) whose assigned current sensor (6, 6′) has a nominal current which is greater than the sum current Iout, but lies closest to the sum current Iout, or to activate those converter units (2, 2′) the sum of whose nominal currents is greater than the sum current, but lies closest to the sum current, so that the amperages in the output lines (5, 5′) of the activated converter units (2, 2′) are in each case below, but as close as possible to, the nominal current IN, IN′ of the assigned current sensors (6, 6′).

2. 发明公开

US20230163699A1 MEASURING ASSEMBLY FOR AN INVERTER AND INVERTER ASSEMBLY 审中-公开
公开(公告)号：US20230163699A1
公开(公告)日：2023-05-25
申请号：US18010471
申请日：2021-06-16
申请人： AVL List GmbH
发明人： Erwin REISINGER , Martin SCHMIDT
IPC分类号： H02M7/5395 , H02M1/00 , H02P27/06 , H02M7/217
CPC分类号： H02M7/5395 , H02M1/0009 , H02P27/06 , H02M7/217
摘要： 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.

3. 发明申请

US20220252478A1 METHOD AND DRIVETRAIN TEST BENCH FOR DETECTING AN IMBALANCE AND/OR A MISALIGNMENT 有权
公开(公告)号：US20220252478A1
公开(公告)日：2022-08-11
申请号：US17629308
申请日：2020-07-24
申请人： AVL LIST GMBH , PIEZOCRYST ADVANCED SENSORICS GMBH
发明人： Martin SCHMIDT , Lukas QUURCK , Jakob MODER
IPC分类号： G01M1/24 , G01M1/08 , G01M13/025
摘要： 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 means 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 at least one measured value progression of the first force measurement and a value progression associated with the measured value progression of a rotational angle determination for the shaft assembly are analyzed in order to detect an imbalance, and/or the measured value progression of the first force measurement is analyzed in order to detect a misalignment of the shaft assembly.

4. 发明申请

US20230099697A1 CONVERTER ASSEMBLY AND TEST STAND HAVING A CONVERTER ASSEMBLY 有权
公开(公告)号：US20230099697A1
公开(公告)日：2023-03-30
申请号：US17909400
申请日：2021-03-05
申请人： AVL List GmbH
发明人： Martin SCHMIDT , Erwin REISINGER
IPC分类号： H02M5/458 , G01R31/40 , B60L50/51 , H02M1/14 , H02M3/10
摘要： The invention relates to a converter assembly comprising a DC voltage intermediate circuit (1) for providing a DC voltage VDC, comprising a positive terminal and a negative terminal, and at least one machine converter (2) for converting the DC voltage VDC into a multi-phase AC voltage, wherein at least one energy storage capacitor (3, 3′) is arranged in the DC voltage intermediate circuit (1), and wherein a frequency-dependent resistor (4) which has a higher electrical resistance at high frequencies than at low frequencies is arranged in series with the energy storage capacitor (3, 3′).

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式