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公开(公告)号：US20210408907A1
公开(公告)日：2021-12-30
申请号：US17264806
申请日：2019-07-09
申请人： Schmidhauser AG
IPC分类号： H02M3/158 , H02M7/5387 , H02M1/00
摘要： A DC/DC converter includes: a first connection pole and a second connection pole, wherein a first DC voltage is applied between the first connection pole and the second connection pole; a third connection pole and a fourth connection pole, wherein a second DC voltage is applied between the third connection pole and the fourth connection pole; a first commutation cell, wherein the first commutation cell has a capacitor, a diode and a semiconductor switch; a second commutation cell, wherein the second commutation cell has a capacitor, a diode and a semiconductor switch; and a precharging circuit for precharging the capacitor of the first commutation cell and the capacitor of the second commutation cell. The precharging circuit has a precharging resistor and an actuable switching device. The precharging resistor and the actuable switching device are connected in parallel. The capacitor of the first commutation cell, the precharging circuit and the capacitor of the second commutation cell are looped in series between the first connection pole and the second connection pole.
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公开(公告)号：US20190393804A1
公开(公告)日：2019-12-26
申请号：US16451900
申请日：2019-06-25
申请人： Schmidhauser AG
IPC分类号： H02M7/5395 , H02M7/521
摘要： A method operates an inverter by driving respective switching means of the bridge arms using pulse width modulation with a temporally changeable duty cycle such that voltages between the bridge connections have a temporally predefined profile. The respective switching means of the bridge arms are driven with flat-top modulation for particular angular ranges of a respective fundamental oscillation. A respective duty cycle for the respective switching means of the bridge arms is selected such that, during a respective period of the pulse width modulation, at least two shunt resistors always perform their measurement function for a minimum time.
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公开(公告)号：US10432128B2
公开(公告)日：2019-10-01
申请号：US15121792
申请日：2015-02-27
申请人： Schmidhauser AG
发明人： Dirk Schekulin
摘要： A frequency converter is used for generating at least one frequency converter output voltage a prescribable frequency converter output voltage amplitude and a prescribable frequency converter output voltage frequency for an electric motor. The frequency converter has: a clocked DC/DC converter is designed to generate from an input direct voltage having an input voltage level a DC/DC converter output voltage having a DC/DC converter output voltage level, wherein the DC/DC converter is designed to generate the DC/DC converter output voltage level based on the prescribable frequency converter output voltage amplitude, and a clocked inverter having a number of controllable switches, to which inverter the DC/DC converter output voltage is applied and which actuates the switches with an inverter switching frequency such that the at least one frequency converter output voltage with the prescribable frequency converter output voltage frequency is generated from the DC/DC converter output voltage.
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公开(公告)号：US20190165670A1
公开(公告)日：2019-05-30
申请号：US16321216
申请日：2017-07-28
申请人： Schmidhauser AG
发明人： Alex ITTEN , Zoltan DOCS
CPC分类号： H02M1/36 , B60L2210/30 , B60L2210/40 , B60L2270/20 , H02J7/345 , H02M1/32 , H02M7/48 , Y02T10/7241
摘要： A circuit for pre-charging an intermediate circuit having a positive branch and a negative branch includes: a first controllable energy source, a second controllable energy source, the first control energy source and second controllable energy source being looped in series between the positive branch and the negative branch on the output side, a suppression unit, the suppression unit being looped between a connection node of the output of the first controllable energy source and the output of the second controllable energy source and a reference potential, and a controller. The controller is connected to the first energy source and the second energy source for signaling purposes and is configured to actuate the first energy source and the second energy source in order to generate an output signal pattern in order to pre-charge the intermediate circuit.
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公开(公告)号：US10193464B2
公开(公告)日：2019-01-29
申请号：US15568514
申请日：2016-04-22
申请人： Schmidhauser AG
发明人： Dirk Schekulin
IPC分类号： H02M1/34 , H02M1/32 , H02M3/335 , H02M3/337 , H02H7/12 , H02M3/156 , H02M7/519 , H02H7/125 , H03K17/0812 , H03K17/284
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.
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公开(公告)号：US11791089B2
公开(公告)日：2023-10-17
申请号：US16606510
申请日：2018-04-20
申请人： Schmidhauser AG
发明人： Christof Schneggenburger , Dirk Schekulin , Bernhard Laeng , Silvia Gross-Kaeufler , Tobias Diefenbacher
IPC分类号： H01F27/00 , H01F27/29 , H01F27/02 , H01F27/24 , H01F27/32 , H01F41/02 , H01F41/06 , H01F41/12 , H01F27/28
CPC分类号： H01F27/29 , H01F27/02 , H01F27/24 , H01F27/327 , H01F41/0206 , H01F41/06 , H01F41/127 , H01F27/28
摘要： A coil component includes a cup, a magnetic core, an electric conductor wound around the core, a cover, which closes the cup, and electric terminal contacts, which are in electric contact with ends of the electric conductor. The core and the electric conductor are arranged in the cup and the cup is filled with potting compound.
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公开(公告)号：US20210066954A1
公开(公告)日：2021-03-04
申请号：US16977148
申请日：2019-02-28
申请人： Schmidhauser AG
发明人： Bernhard LAENG , Alex ITTEN , Benjamin FAESSLER
IPC分类号： H02J7/06 , H02J7/00 , H02M7/5387
摘要： A charging system has: a number of connections for connecting at least one electric reference energy store to be charged; a number n of at least three inverter bridges, each of which has a center tap; a number n of electric filters, wherein the input of each filter of the number n of filters is electrically connected to a respective corresponding center tap of an inverter bridge of the number of inverter bridges; a controllable assigning unit which is inserted between a respective output of a filter of the number n of filters and the number of connections and which is designed to electrically assign the output of each filter of the number n of filters to a respective corresponding connection of the number of connections depending on at least one actuation signal; and a control unit which is designed to generate the at least one actuation signal depending on a desired charge mode of the charging system.
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公开(公告)号：US10924033B2
公开(公告)日：2021-02-16
申请号：US16451900
申请日：2019-06-25
申请人： Schmidhauser AG
IPC分类号： H02M7/5387
摘要： A method operates an inverter by driving respective switching means of the bridge arms using pulse width modulation with a temporally changeable duty cycle such that voltages between the bridge connections have a temporally predefined profile. The respective switching means of the bridge arms are driven with flat-top modulation for particular angular ranges of a respective fundamental oscillation. A respective duty cycle for the respective switching means of the bridge arms is selected such that, during a respective period of the pulse width modulation, at least two shunt resistors always perform their measurement function for a minimum time.
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公开(公告)号：US20190393803A1
公开(公告)日：2019-12-26
申请号：US16451436
申请日：2019-06-25
申请人： Schmidhauser AG
IPC分类号： H02M7/5387 , H02M7/5395 , H02M1/32
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.
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公开(公告)号：US10389304B2
公开(公告)日：2019-08-20
申请号：US15934655
申请日：2018-03-23
申请人： Schmidhauser AG
发明人： Thomas Bisig , Thomas Lange , Siegfried Haas
摘要： A system includes a number of frequency converters, wherein a respective frequency converter has a wired data interface and a frequency converter parameter memory. The system further includes a number of wireless local area network modules, wherein a respective WLAN module has a wired data interface. The data interface of the WLAN module can be coupled to the data interface of a frequency converter for the purpose of bidirectional data exchange, wherein the frequency converter parameter memory of a frequency converter is designed to store values of a number of frequency converter WLAN parameters.
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