Patents Assigned to Lenze Drives GmbH
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Patent number: 11626769Abstract: An electric machine may be an external rotor motor with a stator and a rotor surrounding the stator. The rotor may be mounted on bearings so as to be rotatable around an axis of rotation relative to the stator, where the mechanical forces transmitted by the bearings of the rotor may be absorbed at least in part by the stator. The stator may have a coil winding for generating a magnetic field, the coil winding being surrounded at least partially by a casting compound. At the output, the mechanical forces of the rotor or the device transmitted by the bearings and taken up by the stator may be introduced into the stator largely via the casting compound. The casting compound thus reduces induced vibrations.Type: GrantFiled: April 18, 2018Date of Patent: April 11, 2023Assignee: Lenze Drives GmbHInventors: Volker Grabs, Matthias Thesseling, Olaf Huebner
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Patent number: 11296579Abstract: A Vernier external rotor machine for direct drive of a load is provided. The Vernier external rotor machine includes an external rotor configured to mechanically directly drive to a load.Type: GrantFiled: February 24, 2017Date of Patent: April 5, 2022Assignee: Lenze Drives GmbHInventors: Matthias Thesseling, Heiko Stichweh, Volker Grabs
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Patent number: 11031847Abstract: An electric drive includes a rotor and a stator in toothed-coil technology, wherein the stator has a number of individual tooth modules. A respective individual tooth module has a stator winding which is wound around an associated tooth, a control device which is designed to generate an activation signal for the stator winding, and a shielding device which surrounds the stator winding and the control device.Type: GrantFiled: October 11, 2016Date of Patent: June 8, 2021Assignee: Lenze Drives GmbHInventors: Jan Wettlaufer, Holger Borcherding
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Publication number: 20210159763Abstract: An electric motor has an end shield and a sensor for detecting a magnetic field. The sensor is integrated into the end shield of the electric motor. An electric drive unit may include a brake, in particular an electromagnetically actuatable brake, and an electric motor, where a shielding element is arranged between the sensor and the brake.Type: ApplicationFiled: April 10, 2019Publication date: May 27, 2021Applicant: Lenze Drives GmbHInventor: Rouven Wolfram
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Publication number: 20210152045Abstract: An electric machine may be an external rotor motor with a stator and a rotor surrounding the stator. The rotor may be mounted on bearings so as to be rotatable around an axis of rotation relative to the stator, where the mechanical forces transmitted by the bearings of the rotor may be absorbed at least in part by the stator. The stator may have a coil winding for generating a magnetic field, the coil winding being surrounded at least partially by a casting compound. At the output, the mechanical forces of the rotor or the device transmitted by the bearings and taken up by the stator may be introduced into the stator largely via the casting compound. The casting compound thus reduces induced vibrations.Type: ApplicationFiled: April 18, 2018Publication date: May 20, 2021Applicant: Lenze Drives GmbHInventors: Volker Grabs, Matthias Thesseling, Olaf Huebner
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Electric motor with rotating first concentric cooling fins and second concentric fins on the housing
Patent number: 11005329Abstract: An electric motor with a heat source is arranged on a shaft in a co-rotating manner, wherein a first and a second cooling fin arrangement interact in order to dissipate heat from the heat source to the outside.Type: GrantFiled: October 11, 2016Date of Patent: May 11, 2021Assignee: Lenze Drives GmbHInventors: Andreas Tolksdorf, Karsten Huebner, Holger Hennig -
Patent number: 10958125Abstract: A circuit board to be mounted in a non-drive end shield of an electric motor has a converter formed on the circuit board. The circuit board is divided into a central region and a number of toothed regions surrounding the central region, wherein planes of the toothed regions are bent with respect to a plane of the central region in a mounting position.Type: GrantFiled: October 11, 2016Date of Patent: March 23, 2021Assignee: Lenze Drives GmbHInventors: Jan Wettlaufer, Karsten Huebner, Martin Ehlich
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Patent number: 10892701Abstract: A drive system includes a three-phase motor having a shaft, a first three-phase stator winding which is to be connected to a three-phase AC voltage grid, a second three-phase stator winding which is to be connected to the three-phase AC voltage grid in such a way that a second stator rotating field rotating in opposition results with respect to a first stator rotating field which is generated by means of the first stator winding, and a rotor winding system which is mechanically coupled in a rotationally fixed manner to the shaft. The drive system further includes at least one inverter which is mechanically coupled in a rotationally fixed manner to the shaft and which is electrically coupled to the rotor winding system, wherein the at least one inverter is configured to generate actuation signals for the rotor winding system such that a first rotor rotating field and a second rotor rotating field rotating in opposition to the first rotor rotating field are generated.Type: GrantFiled: December 22, 2017Date of Patent: January 12, 2021Assignee: Lenze Drives GmbHInventors: Andreas Tolksdorf, Dennis Steup
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Patent number: 10811929Abstract: A motor system includes: a stator; a rotor; a motor shaft, which is mechanically coupled for conjoint rotation with the rotor, and which defines a radial direction and an axial direction of the motor system; heat-generating components, in particular power semiconductors; a control device which is designed to control an operation of the motor system; and a housing. The housing has a first central chamber, wherein the stator, the rotor and the heat-generating components are arranged inside the first chamber, and wherein the heat-generating components are connected to an outer wall of the first chamber, and has a number of second chambers, wherein the second chambers radially surround the first chamber, and wherein the second chambers form closed channels for guiding cooling air.Type: GrantFiled: November 23, 2015Date of Patent: October 20, 2020Assignee: Lenze Drives GmbHInventors: Jan Wettlaufer, Abdenbi Maghnaoui, Torben Jonsky, Volker Grabs, Martin Ehlich
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Patent number: 10775864Abstract: A storage operating device equipped with a drive that is supplied with electrical energy from a power supply network via an inverter, the inverter having an electrical intermediate circuit, the storage operating device having a control device that is designed to detect a power failure and to react to the same. In order to create a storage operating device and a method for controlling a storage operating device that allows a guided stoppage of the storage operating device in the event of a failure of an electrical power supply network, at a lower cost than is the case in the prior art, the control device has means for detecting a power failure of the power supply network, for the purpose of monitoring the intermediate circuit voltage in the intermediate circuit.Type: GrantFiled: August 11, 2017Date of Patent: September 15, 2020Assignee: Lenze Drives GmbHInventor: Thomas Nottbrock
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Patent number: 10778069Abstract: A motor system includes a stator, a rotor, a number of power modules which each have planar contact faces for dissipating heat, a control device which is designed to actuate the power modules, a housing, wherein the stator and the rotor are arranged inside the housing, and at least one heat sink. The heat sink has a number of planar contact faces which are connected in a thermally conductive fashion to respectively corresponding contact faces of the power modules. The heat sink has regions for dissipating heat, wherein a coolant flows around the regions in order to dissipate heat.Type: GrantFiled: May 11, 2016Date of Patent: September 15, 2020Assignee: Lenze Drives GmbHInventors: Jan Wettlaufer, Karsten Huebner
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Publication number: 20190323923Abstract: An electric drive unit having an electric motor having a flange-mounted adapter that is attached to the electric motor and has a motor shaft extension for extending the motor shaft through the adapter. The electric drive unit has at least one sensor for measuring at least one operating variable of the electric motor and an evaluation unit for evaluating the operating variable(s) measured by the sensor(s). The sensor(s) and evaluation unit are arranged in and/or on the electric motor and/or adapter. The evaluation unit is designed to evaluate the measured operating variable(s) with respect to the need for maintenance and/or repair and to output a signal about the need for maintenance and/or repair via a signal transmission device for signaling the need for maintenance if the result of the evaluation of the operating variable(s) indicates the need for maintenance.Type: ApplicationFiled: January 25, 2018Publication date: October 24, 2019Applicant: Lenze Drives GmbHInventor: Tim-Oliver RICKE
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Patent number: 10312838Abstract: A drive system has an electric motor, wherein the electric motor includes a first three-phase stator winding system and a second three-phase stator winding system. The first and the second stator winding system are arranged on the stator in a manner rotated through an electrical phase angle in relation to one another. The drive system includes a frequency converter, wherein the frequency converter has a first bridge circuit arrangement which is designed to generate voltages for the first winding system and a second bridge circuit arrangement which is designed to generate voltages for the second winding system. The first bridge circuit arrangement and the second bridge circuit arrangement are connected in series. A control device is designed to actuate the first bridge circuit arrangement and the second bridge circuit arrangement.Type: GrantFiled: August 19, 2016Date of Patent: June 4, 2019Assignee: Lenze Drives GmbHInventors: Heiko Stichweh, Felix Klute, Torben Jonsky, Thorsten Hohnsbein, Volker Grabs, Holger Borcherding
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Patent number: 10263557Abstract: A drive system includes a three-phase motor having a shaft, a first three-phase stator winding, which is to be connected to a three-phase AC voltage grid, a second three-phase stator winding, which is to be connected to the three-phase AC voltage grid in such a way that a second stator rotating field is produced rotating in opposition with respect to a first stator rotating field, which is generated by the first stator winding, and a rotor winding system which is mechanically coupled in rotationally fixed fashion to the shaft.Type: GrantFiled: May 8, 2014Date of Patent: April 16, 2019Assignee: Lenze Drives GmbHInventor: Andreas Tolksdorf
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Patent number: 10186932Abstract: A drive system has an electric motor having a shaft; an electronic assembly; and a fan driven by way of the shaft, the electronic assembly being rigidly and thermally coupled to the fan.Type: GrantFiled: May 8, 2014Date of Patent: January 22, 2019Assignee: Lenze Drives GmbHInventors: Gerd Schueler, Andreas Tolksdorf, Tino Goetz, Fabian Buescher, Volker Grabs, Michael Kriese
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Publication number: 20180309343Abstract: An electric motor with a heat source is arranged on a shaft in a co-rotating manner, wherein a first and a second cooling fin arrangement interact in order to dissipate heat from the heat source to the outside.Type: ApplicationFiled: October 11, 2016Publication date: October 25, 2018Applicant: Lenze Drives GmbHInventors: Andreas TOLKSDORF, Karsten HUEBNER, Holger HENNIG
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Patent number: 10060481Abstract: A geared motor has an electric motor with an output shaft and a gear mechanism, the electric motor and the gear mechanism being adapted to one another such that a bearing plate of the electric motor can be fastened directly to an input shaft side of a housing of the gear mechanism. A coupling thread, which surrounds the output shaft for producing a threaded connection, is provided for fastening the bearing plate to the input shaft side. To that end, a securing section is provided which, in the fastened state, prevents a relative rotation of the housing of the gear mechanism with respect to the bearing plate in a release direction. The securing section is fastened to the bearing plate or to the gear mechanism housing by way of a fastening screw which is screwed into the bearing plate or the gear mechanism housing in a manner which is oriented in the tangential direction of the coupling thread.Type: GrantFiled: August 20, 2013Date of Patent: August 28, 2018Assignee: Lenze Drives GmbHInventors: Ralf Guhl, Andreas Hilkemeier, Juergen Huette, Arno Senke
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Patent number: 9964155Abstract: In the case of an arrangement with a hollow shaft, an input shaft partially contained in the hollow shaft, and a clamping device, the hollow shaft is connected to the input shaft by forces which are directed radially to the hollow shaft being introduced into the hollow shaft at at least three discrete introduction points arranged along a circumference of the hollow shaft.Type: GrantFiled: May 8, 2014Date of Patent: May 8, 2018Assignee: Lenze Drives GmbHInventors: Tino Goetz, Ralf Guhl
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Patent number: 9864945Abstract: An electrical control unit which is supplied in operation with an operating voltage, has: a non-volatile memory for storing operating parameter values and/or program code of the control unit, a control device which is coupled to the memory and controls an operation of the control unit depending on the stored operating parameter values and/or the stored program code as long as the control unit is supplied with the operating voltage, and a passive radio-frequency identification transponder, which is coupled to the memory and, regardless of whether the control unit is or is not supplied with the operating voltage, is designed to store operating parameter values transferred from an RFID read/write device and/or program code transferred from the RFID read/write device in the memory and/or to transfer operating parameter values stored in the memory and/or program code stored in the memory to the RFID read/write device.Type: GrantFiled: April 3, 2014Date of Patent: January 9, 2018Assignee: Lenze Drives GmbHInventors: Hans Wendt, Kurt Raymann
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Patent number: 9825568Abstract: A drive system has: a three-phase motor, having: a shaft, a first three-phase winding set, having: a three-phase stator winding for connection to a three-phase alternating voltage network and a three-phase rotor winding, which is coupled to the shaft in a mechanical, rotationally fixed manner, a second three-phase winding set, having: a three-phase stator winding for connection to the three-phase alternating voltage network in such a manner that rotary field is produced that runs in the opposite direction to a rotary field that is produced by the stator winding of the first winding set.Type: GrantFiled: May 8, 2014Date of Patent: November 21, 2017Assignee: Lenze Drives GmbHInventor: Andreas Tolksdorf