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21. 发明授权

US10386426B2 Detecting a failure of a phase in a grid for inverters having a frequency detection in an intermediate DC voltage link 有权
公开(公告)号：US10386426B2
公开(公告)日：2019-08-20
申请号：US15198771
申请日：2016-06-30
申请人： Schmidhauser AG
发明人： Andreas Schrepfer
IPC分类号： G01R1/20 , G01R31/42 , G01R31/02 , H02M1/084 , H02M7/04 , H02M7/44 , G01R31/40
摘要： A detection of a failure of a phase (as a method and apparatus) in a system—supplied by multiple phases—including a DC link (5) is suggested. A rectified voltage (10) of the DC link (5) pulses at a multiple of the mains frequency as a fundamental wave. The rectified voltage (10) is filtered for detecting a signal component at the double frequency of the mains frequency (12). The rectified voltage (10) is also “filtered” for detecting an average link voltage (14). A ratio signal (17) is formed as a ratio of the average link voltage (14) to the signal component at the double frequency of the mains frequency (12). An error detection signal (19) results from a comparison of the ratio signal (17) with an error threshold (20).

22. 发明申请

US20180115247A1 DC-DC Converter 审中-公开
公开(公告)号：US20180115247A1
公开(公告)日：2018-04-26
申请号：US15568514
申请日：2016-04-22
申请人： Schmidhauser AG
发明人： Dirk SCHEKULIN
IPC分类号： H02M3/337 , H02M1/32 , H02M3/156 , H02M3/335 , H02H7/12
CPC分类号： H02M3/337 , H02H7/1213 , H02H7/125 , H02M1/32 , H02M3/156 , H02M3/335 , H02M3/33507 , H02M3/33546 , H02M3/33576 , H02M3/33584 , H02M3/33592 , H02M2001/342 , H03K17/08122 , H03K17/284 , Y02B70/1475 , Y02B70/1491
摘要： A DC-DC converter includes: an output terminal, wherein the output terminal has a first output terminal pin and a second output terminal pin; a number of rectifier elements; a voltage limiting unit having an electrical energy store, wherein the voltage limiting unit is designed to limit voltages across the rectifier elements; and a clocked energy regulator unit which is designed to regulate at a setpoint value energy which is stored in the electrical energy store.

23. 发明申请

US20170234936A1 DETECTING A FAILURE OF A PHASE IN A GRID FOR INVERTERS HAVING A FREQUENCY DETECTION IN AN INTERMEDIATE DC VOLTAGE LINK 审中-公开
公开(公告)号：US20170234936A1
公开(公告)日：2017-08-17
申请号：US15198771
申请日：2016-06-30
申请人： Schmidhauser AG
发明人： Andreas Schrepfer
IPC分类号： G01R31/42 , G01R1/20 , H02M7/44 , H02M7/04 , H02M1/084
CPC分类号： G01R31/42 , G01R1/20 , G01R31/02 , G01R31/40 , H02M1/084 , H02M7/04 , H02M7/44
摘要： A detection of a failure of a phase (as a method and apparatus) in a system—supplied by multiple phases—including a DC link (5) is suggested. A rectified voltage (10) of the DC link (5) pulses at a multiple of the mains frequency as a fundamental wave. The rectified voltage (10) is filtered for detecting a signal component at the double frequency of the mains frequency (12). The rectified voltage (10) is also “filtered” for detecting an average link voltage (14). A ratio signal (17) is formed as a ratio of the average link voltage (14) to the signal component at the double frequency of the mains frequency (12). An error detection signal (19) results from a comparison of the ratio signal (17) with an error threshold (20).

24. 发明授权

US11043914B2 Control device for actuating an electric motor, electric motor and system having a control device and electric motor 有权
公开(公告)号：US11043914B2
公开(公告)日：2021-06-22
申请号：US16624426
申请日：2018-06-21
申请人： Schmidhauser AG
发明人： Andreas Burgermeister
IPC分类号： H02H3/04 , H02P29/60
摘要： A control device for actuating an electric motor has: a temperature sensor interface for connecting an external temperature sensor, wherein the temperature sensor is provided to monitor the temperature of the electric motor, and a monitoring unit, which is configured to evaluate at least one temperature-dependent property of the temperature sensor in order to monitor the temperature of the electric motor and to exchange data with the electric motor via the temperature sensor interface independently of and in addition to the temperature monitoring.

25. 发明授权

US10924032B2 Inverter and method for operating an inverter with angle-independent variation of pulse duty factor of switching elements 有权
公开(公告)号：US10924032B2
公开(公告)日：2021-02-16
申请号：US16451436
申请日：2019-06-25
申请人： Schmidhauser AG
发明人： Andreas Burgermeister
IPC分类号： H02M7/5387 , H02M7/5395
摘要： A method operates an inverter, wherein the inverter includes a number of bridge arms with respective bridge terminals, wherein a respective bridge arm is electrically connected on a first side to a first intermediate circuit pole of the inverter, and wherein a respective bridge arm is electrically connected on a second side to a second intermediate circuit pole of the inverter. A respective bridge arm has at least two switching elements, wherein a respective bridge terminal, depending upon a circuit state of the switching elements in the bridge arm, is electrically connected either to the first intermediate circuit pole or to the second intermediate circuit pole. A shunt resistor is arranged in a respective bridge arm. The method actuates the respective switching elements of the bridge arms via pulse width modulation with a temporally variable pulse duty factor, such that voltages between the bridge terminals show a temporally defined characteristic. The respective switching elements of the bridge arms are actuated with flat-top modulation for specific angular ranges of a respective fundamental wave, and a respective pulse duty factor for the switching elements of the bridge arms, immediately ahead of and/or immediately after the angular ranges, varies within a predefined time interval in an angularly-independent manner.

26. 发明授权

US10811984B2 Bidirectional DC-to-DC converter with voltage limitation device including switching element and voltage limitation capacitor 有权
公开(公告)号：US10811984B2
公开(公告)日：2020-10-20
申请号：US15567667
申请日：2016-04-22
申请人： Schmidhauser AG
发明人： Dirk Schekulin
IPC分类号： H02M3/335 , H02M1/32 , H02M3/28
摘要： A bidirectional DC-to-DC converter include a first half-bridge circuit, a second half-bridge circuit, at least one transformer having a first primary winding and a second primary winding and at least one secondary winding. The first half-bridge circuit is designed to generate an AC voltage at the first primary winding, and the second half-bridge circuit is designed to generate an AC voltage at the second primary winding. At least one bidirectional power converter circuit is electrically coupled to the secondary winding in a bridge arrangement. The bridge arrangement has a first bridge connection pole and a second bridge connection pole. The power converter circuit includes a voltage limitation device having a switching element.

27. 发明申请

US20200039369A1 Charging station for charging an electric vehicle 审中-公开
公开(公告)号：US20200039369A1
公开(公告)日：2020-02-06
申请号：US16528932
申请日：2019-08-01
申请人： Schmidhauser AG
发明人： Andreas BURGERMEISTER , Dirk SCHEKULIN , Erich SIDLER
IPC分类号： B60L53/302 , H02J7/00 , H05K7/20 , B60L53/18
摘要： A charging station charges an electric vehicle. The charging station has: a housing, a number of first power electronics components and a number of second power electronics components different from the first power electronics components, wherein the power electronics components are arranged spatially in the housing, and a first air cooling circuit and a second air cooling circuit separate from the first air cooling circuit. The air cooling circuits are arranged spatially in the housing. The first air cooling circuit serves to cool the number of first power electronics components. The second air cooling circuit serves to cool the number of second power electronics components. The charging station is designed such that a first protection class of at least one region of the first air cooling circuit is higher than a second protection class of the second air cooling circuit.

28. 发明授权

US10530147B2 Control device with safety shutdown 有权
公开(公告)号：US10530147B2
公开(公告)日：2020-01-07
申请号：US15029193
申请日：2014-10-14
申请人： Schmidhauser AG
发明人： Alex Itten , Bernhard Laeng
IPC分类号： H02P29/032 , H02H7/08 , H02P27/06
摘要： A control device for an electrical device such as an electric motor is provided. The control device is designed to, when necessary, bring about a safe, torque-free state of an electric motor, in particular a field-weakened electric motor. The control device includes a safety unit which is designed to generate safety control signals. A driver unit of the control device is designed to generate, irrespective of a state of motor control signals, in the case of a first state pattern of the safety control signals, power semiconductor control signals in such a way that power semiconductors have a non-conductive state, in the case of a second state pattern of the safety control signals to generate the power semiconductor control signals in such a way that a bridge output terminal is electrically connected to a positive intermediate circuit potential, and in the case of a third state pattern of the safety control signals to generate the power semiconductor control signals in such a way that the bridge output terminal is electrically connected to a negative intermediate circuit potential.

29. 发明授权

US10389264B2 Power converter 有权
公开(公告)号：US10389264B2
公开(公告)日：2019-08-20
申请号：US14901432
申请日：2014-06-27
申请人： Schmidhauser AG
发明人： Andreas Burgermeister
IPC分类号： H02H7/08 , H02M7/00 , G01R31/02 , G01R31/34 , H02M1/00 , H02P27/04 , H05K1/02 , G01R15/18
摘要： A power converter for driving a three-phase AC motor with three phase conductors has: a first terminal for connecting a first of the three phase conductors of the three-phase AC motor, wherein a current which is to be output by way of the first terminal is routed to the first terminal by way of an electrical feed line, and a ground-fault and/or short-circuit identification circuit which is designed to detect a ground fault and/or short circuit of the first terminal. The ground-fault and/or short-circuit identification circuit has: a coil with a winding which is arranged adjacent to the electrical feed line, wherein the winding does not surround the electrical feed line, and an evaluation device which is designed to evaluate a voltage, which is induced in the winding, for ground-fault and/or short-circuit identification.

30. 发明申请

US20180367062A1 Network Feedback Unit and Electrical Drive System 审中-公开
公开(公告)号：US20180367062A1
公开(公告)日：2018-12-20
申请号：US15771993
申请日：2016-10-28
申请人： Schmidhauser AG
发明人： Christof SCHNEGGENBURGER , Dirk SCHEKULIN
IPC分类号： H02M7/5387 , H02M3/158 , H02M7/5395
摘要： A network feedback unit is designed to feed electrical energy from a voltage intermediate circuit into a three-phase network, wherein the network feedback unit has: a buck converter unit having a first buck converter and a second buck converter, wherein the first buck converter and the second buck converter are connected in parallel and the input side of each of which is electrically coupled to the voltage intermediate circuit, an inverter, the input side of which is electrically coupled to an output of the buck converter unit and the output side of which is electrically coupled to the three-phase network, at least one filter capacitor, which is arranged at the output of the buck converter unit or at the output of the inverter, and a controller unit, which is designed to drive the first buck converter and the second buck converter depending on a filter capacitor current in such a way that the first buck converter and the second buck converter contribute in equal parts to an output current of the buck converter unit.

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