Patents by Inventor Jan Nägelkrämer
Jan Nägelkrämer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11757389Abstract: A method for noise reduction of a three-phase-driven electrical machine includes recording an angular state of a rotor of the electrical machine, calculating a reference frequency on the basis of the recorded angular state, forming a sine and cosine value of the calculated reference frequency, and filtering the sine and cosine value. The method may also include recording a sound-related feedback variable, forming a weighting vector, forming a superposition signal, and applying the superposition signal to a manipulated variable of the electrical machine.Type: GrantFiled: January 28, 2022Date of Patent: September 12, 2023Assignee: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFTInventors: Jan Naegelkraemer, Maximilian Barkow
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Publication number: 20230064259Abstract: An electrical machine, as a prime mover of an electrically driven motor vehicle, including a rotor and a stator, wherein the stator surrounds a substantially cylindrical space area, in which the rotor is rotatably arranged, the rotor includes a rotor shaft, on which a rotor core is arranged, the rotor core including groove-like recesses which extend toward the rotor shaft, electrically conductive conductors of a rotor winding and a displacement body for arranging the conductors in the groove-like recess are provided in the groove-like recesses, and at least one cooling channel, which extends in a longitudinal direction of the rotor shaft, is arranged in at least one groove-like recess.Type: ApplicationFiled: August 25, 2022Publication date: March 2, 2023Inventors: Jan Naegelkraemer, Christian Koenen
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Patent number: 11424971Abstract: A control unit generates pulse width modulation (PWM) pulses for an inverter. The control unit has a noise reducer configured to generate an opposing signal for active noise reduction. The noise reducer is configured to set a phase angle of the opposing signal based upon a predefined PWM frequency.Type: GrantFiled: June 30, 2021Date of Patent: August 23, 2022Assignee: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Robert Nelles, Jan Naegelkraemer
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Publication number: 20220247334Abstract: A method for noise reduction of a three-phase-driven electrical machine includes recording an angular state of a rotor of the electrical machine, calculating a reference frequency on the basis of the recorded angular state, forming a sine and cosine value of the calculated reference frequency, and filtering the sine and cosine value. The method may also include recording a sound-related feedback variable, forming a weighting vector, forming a superposition signal, and applying the superposition signal to a manipulated variable of the electrical machine.Type: ApplicationFiled: January 28, 2022Publication date: August 4, 2022Inventors: Jan Naegelkraemer, Maximilian Barkow
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Publication number: 20220014402Abstract: A control unit generates pulse width modulation (PWM) pulses for an inverter. The control unit has a noise reducer configured to generate an opposing signal for active noise reduction. The noise reducer is configured to set a phase angle of the opposing signal based upon a predefined PWM frequency.Type: ApplicationFiled: June 30, 2021Publication date: January 13, 2022Inventors: Robert Nelles, Jan Naegelkraemer
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Publication number: 20210276430Abstract: An apparatus and a method for influencing electromagnetic forces of an electric traction motor, a higher-order harmonic (336) being superimposed on an actuating variable (udq) for the electric traction motor in a manner which is dependent on a rotational speed of the electric traction motor, a torque of the electric traction motor, a temperature at the electric traction motor, or a three-phase current or a three-phase voltage of the electric traction motor for the generation of a resulting actuating variable (uabc), the electric traction motor being actuated in a manner which is dependent on the resulting actuating variable (uabc), and the actuating variable (udq), the harmonic (336) and the resulting actuating variable (uabc) characterizing an actuating current or an actuating voltage.Type: ApplicationFiled: February 11, 2021Publication date: September 9, 2021Inventors: Maximilian Barkow, Robert Nelles, Hugo Kock, Jan Naegelkraemer
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Patent number: 10855128Abstract: Described is a method for producing a stator, in particular for electric motors. In a first step, a plurality of flexible electrical conductors are combined to form a conductor bundle. In a second step, two end regions of the conductor bundle are pressed in such a way that a central region of the conductor bundle formed between the two end regions remains flexible. Also described is a corresponding stator.Type: GrantFiled: December 18, 2017Date of Patent: December 1, 2020Inventors: Johannes Lange, Tobias Engelhardt, Stefan Schmitz, Axel Heitmann, Jan Nägelkrämer, Stefan Oechslen, Daniel Knoblauch, Wolfgang Thaler, Stefan Heinz
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Patent number: 10742100Abstract: A coil segment, in particular for a stator coil, wherein the coil segment has a conductor bundle, wherein the conductor bundle has a multiplicity of electrical conductors, wherein the conductor bundle has a form fit, wherein the conductor bundle has at least one cutout for feeding coolant. Furthermore, a method for manufacturing a stator coil, a stator coil having a coil segment according to the present invention, a machine having a stator coil according to the present invention, and a vehicle having a machine according to the present invention.Type: GrantFiled: February 14, 2018Date of Patent: August 11, 2020Assignee: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Johannes Lange, Axel Heitmann, Tobias Engelhardt, Jan Nägelkrämer, Stefan Oechslen, Stefan Schmitz
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Patent number: 10707793Abstract: A method for operating a synchronous machine having a rotor, comprising the following features: the synchronous machine is modelled, with respect to the rotor, as a two-phase system with a direct-axis current and a quadrature-axis current, rotor losses of the synchronous machine, which rotor losses occur in the rotor, are numerically described by an evaluation function of the first direct-axis current, of the quadrature-axis current and of a specified rotation speed of the synchronous machine, and, on the basis of the evaluation function, the direct-axis current and the second quadrature-axis current are controlled for the specified rotation speed and a required torque in such a way that the synchronous machine outputs the required torque and the rotor losses are low and a corresponding synchronous machine, a corresponding computer program and a corresponding storage medium.Type: GrantFiled: May 15, 2018Date of Patent: July 7, 2020Assignee: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Jan Nägelkrämer, Axel Heitmann, Thomas Hubert, Sven Luthardt, Stefan Schmitz
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Patent number: 10707728Abstract: A device for sealing off multiple grooves of a stator of an electric drive machine with respect to a rotor of the electric drive machine. The device includes a seal which is able to be inserted simultaneously into the multiple grooves, wherein the seal is designed as an electrical insulator. The seal is designed to seal off the grooves with respect to the rotor. Windings of an electrical coil are able to be arranged in the grooves. The seal is of integral or unipartite design.Type: GrantFiled: January 11, 2018Date of Patent: July 7, 2020Assignee: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Stefan Oechslen, Jan Nägelkrämer
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Publication number: 20190356254Abstract: A method for operating a synchronous machine having a rotor, comprising the following features: the synchronous machine is modelled, with respect to the rotor, as a two-phase system with a direct-axis current and a quadrature-axis current, rotor losses of the synchronous machine, which rotor losses occur in the rotor, are numerically described by an evaluation function of the first direct-axis current, of the quadrature-axis current and of a specified rotation speed of the synchronous machine, and, on the basis of the evaluation function, the direct-axis current and the second quadrature-axis current are controlled for the specified rotation speed and a required torque in such a way that the synchronous machine outputs the required torque and the rotor losses are low and a corresponding synchronous machine, a corresponding computer program and a corresponding storage medium.Type: ApplicationFiled: May 15, 2018Publication date: November 21, 2019Applicant: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Jan Nägelkrämer, Axel HEITMANN, Thomas HUBERT, Sven LUTHARDT, Stefan SCHMITZ
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Publication number: 20180233998Abstract: A coil segment, in particular for a stator coil, wherein the coil segment has a conductor bundle, wherein the conductor bundle has a multiplicity of electrical conductors, wherein the conductor bundle has a form fit, wherein the conductor bundle has at least one cutout for feeding coolant. Furthermore, a method for manufacturing a stator coil, a stator coil having a coil segment according to the present invention, a machine having a stator coil according to the present invention, and a vehicle having a machine according to the present invention.Type: ApplicationFiled: February 14, 2018Publication date: August 16, 2018Applicant: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Johannes LANGE, Axel HEITMANN, Tobias ENGELHARDT, Jan NÄGELKRÄMER, Stefan OECHSLEN, Stefan SCHMITZ
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Publication number: 20180212493Abstract: A device for sealing off multiple grooves of a stator of an electric drive machine with respect to a rotor of the electric drive machine. The device includes a seal which is able to be inserted simultaneously into the multiple grooves, wherein the seal is designed as an electrical insulator. The seal is designed to seal off the grooves with respect to the rotor. Windings of an electrical coil are able to be arranged in the grooves. The seal is of integral or unipartite design.Type: ApplicationFiled: January 11, 2018Publication date: July 26, 2018Applicant: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Stefan OECHSLEN, Jan NÄGELKRÄMER
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Publication number: 20180175690Abstract: Described is a method for producing a stator, in particular for electric motors. In a first step, a plurality of flexible electrical conductors are combined to form a conductor bundle. In a second step, two end regions of the conductor bundle are pressed in such a way that a central region of the conductor bundle formed between the two end regions remains flexible. Also described is a corresponding stator.Type: ApplicationFiled: December 18, 2017Publication date: June 21, 2018Applicant: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Johannes Lange, Tobias Engelhardt, Stefan Schmitz, Axel Heitmann, Jan Nägelkrämer, Stefan Oechslen, Daniel Knoblauch, Wolfgang Thaler, Stefan Heinz