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公开(公告)号：US20240055916A1
公开(公告)日：2024-02-15
申请号：US17766291
申请日：2020-10-02
Applicant: Philip KORTA , Lakshmi Varaha IYER , Gerd SCHLAGER , MAGNA INTERNATIONAL INC.
Inventor： Philip KORTA , Lakshmi Varaha IYER , Gerd SCHLAGER
Abstract: A rotor for a wound-field synchronous machine (WFSM) comprises a core having a base with a ring-shaped cross-section extending between an outside surface and an inside surface defining a bore. The rotor also comprises a plurality of field windings spaced apart from one another at regular angular intervals and each extending around the base of the core, adjacent the outside surface and through the bore. Rotor field windings having radial, or spoke configurations are provided. Rotor field windings having V-shaped arrangements, in which two field windings each contribute to the production of each pole, are also provided. Rotors having permanent magnets in addition to field windings are also provided.
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公开(公告)号：US20220294338A1
公开(公告)日：2022-09-15
申请号：US17635835
申请日：2020-08-14
Applicant: Hua BAI , Liyan ZHU , Wolfgang BAECK , Michael NEUDORFHOFER , Gerd SCHLAGER , Lakshmi Varaha IYER , Philip KORTA
Inventor： Hua BAI , Liyan ZHU , Wolfgang BAECK , Michael NEUDORFHOFER , Gerd SCHLAGER , Lakshmi Varaha IYER , Philip KORTA
Abstract: A battery charger for an electric vehicle supplies DC output power to an output bus for supplying power to a battery. The battery charger includes an AC/DC converter using switches to convert AC power from an AC source to a DC link voltage upon a DC link bus. A DC link capacitor allows a ripple in the DC link voltage that is greater than in conventional charger designs. A DC/DC stage includes a DC/AC converter including one or more switches to selectively conduct current from the DC link bus to supply an AC power to a transformer. The switches of the DC/AC converter are mounted to an insulated metal substrate that is in thermal contact with a transformer housing for dissipating heat therefrom. A controller controls one or more switches of the DC/AC converter and varies a switching frequency responsive to the ripple of the DC link voltage.
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公开(公告)号：US20220166275A1
公开(公告)日：2022-05-26
申请号：US17440860
申请日：2020-03-19
Applicant: Lakshmi Varaha IYER , Gerd SCHLAGER , Alexander EXL , Mitch REEDY , MAGNA INTERNATIONAL INC.
Inventor： Lakshmi Varaha IYER , Gerd SCHLAGER , Alexander EXL , Mitch REEDY
Abstract: An electromagnetic machine includes a stator that includes a back plate and a plurality of electrical conductors radially disposed on the back plate. The electromagnetic machine also includes a rotor that includes a body having an outer diameter corresponding to an inner diameter of the stator and at least one magnet having a first end disposed proximate the stator and a second end disposed opposite the first end. The electromagnetic machine also includes an engaging member disposed on a shaft that extends axially relative to the rotor, the engaging member being configured to engage at least one recessed portion of the rotor.
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4.发明申请公开(公告)号：US20220103083A1
公开(公告)日：2022-03-31
申请号：US17425574
申请日：2020-01-24
Applicant: Xiang ZHOU , Wenbo LIU , Bo SHENG , Yang CHEN , Andrew YUREK , Yan-Fei LIU , Lakshmi Varaha IYER , Gerd SCHLAGER , Michael NEUDORFHOFER , Wolfgang BAECK , MAGNA INTERNATIONAL INC.
Inventor： Xiang ZHOU , Wenbo LIU , Bo SHENG , Yang CHEN , Andrew YUREK , Yan-Fei LIU , Lakshmi Varaha IYER , Gerd SCHLAGER , Michael NEUDORFHOFER , Wolfgang BAECK
Abstract: An LLC power converter comprises a switching stage and a resonant tank, the switching stage configured to switch an input power at a switching frequency to apply a switched power to the resonant tank, and the resonant tank includes a resonant inductor, a resonant capacitor, and a parallel inductance. A transformer has a primary winding connected to the resonant tank and a secondary winding. A synchronous rectifier (SR) switch is configured to selectively switch current from the secondary winding to supply a rectified current to a load. An RC filter includes a filter capacitor and a filter resistor connected across the SR switch, with the filter capacitor defining a filter capacitor voltage thereacross. A rectifier driver is configured to drive the SR switch to a conductive state in response to the filter capacitor voltage being less than a threshold value.
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5.发明申请公开(公告)号：US20220094272A1
公开(公告)日：2022-03-24
申请号：US17425656
申请日：2020-01-24
Applicant: Wenbo LIU , Yang CHEN , Xiang ZHOU , Andrew YUREK , Mojtaba FOROUZESH , Bo SHENG , Sam WEBB , Yan-fei LIU , Lakshmi Varaha IYER , Gerd SCHLAGER , Michael NEUDORFHOFER , Wolfgang BAECK , MAGNA INTERNATIONAL INC.
Inventor： Wenbo LIU , Yang CHEN , Xiang ZHOU , Andrew YUREK , Mojtaba FOROUZESH , Bo SHENG , Sam WEBB , Yan-Fei LIU , Lakshmi Varaha IYER , Gerd SCHLAGER , Michael NEUDORFHOFER , Wolfgang BAECK
Abstract: An inductor-inductor-capacitor (EEC) power converter with high efficiency for Electric Vehicle (EV) on-board low voltage DC-DC chargers (LDC) is disclosed. The converter includes a switching bridge with a plurality of bridge switches and configured to generate an output from a direct current input voltage. An EEC tank circuit is coupled to the switching bridge and includes a resonant inductor and a resonant capacitor and a parallel inductor connected between the resonant inductor and the resonant capacitor. The tank circuit is configured to output a resonant sinusoidal current from the output of the switching bridge. At least one transformer has at least one primary winding in parallel with the parallel inductor of the inductor-inductor-capacitor tank circuit and at least one secondary winding. At least one rectifier is coupled to the at least one secondary winding and is configured to output a rectified alternating current.
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Patent Agency Ranking
公开(公告)号：US20100210365A1
公开(公告)日：2010-08-19
申请号：US12677341
申请日：2008-09-09
Applicant: Martin Schober , Christian Benatzky , Gerd Schlager , Jaroslaw Lutoslawski
Inventor： Martin Schober , Christian Benatzky , Gerd Schlager , Jaroslaw Lutoslawski
IPC: F16F15/134
CPC classification number: F16F15/13157 , F16F15/134
Abstract: The present invention relates to a dual-mass flywheel for a drive train of a motor vehicle, having one primary flywheel mass and one secondary flywheel mass (13), which are coupled to one another in a rotationally elastic manner via at least one spring device (19, 39, 53). At least one gear device (21, 31, 51, 51″) is disposed between the spring device and at least one of the two flywheel masses, said gear device causing a deflection movement of the spring device relative (19, 39, 53) to a rotational movement of the two flywheel masses in relation to one another, wherein a characteristic curve of the spring device may be modified by the gear device (21, 31, 51, 51″).
Abstract translation: 本发明涉及一种用于机动车辆的传动系的双质量飞轮，其具有一个主飞轮质量块和一个次级飞轮质量块（13），它们以旋转弹性的方式通过至少一个弹簧装置 （19,39,53）。 至少一个齿轮装置（21,31,51,51“）设置在弹簧装置和两个飞轮块中的至少一个之间，所述齿轮装置引起弹簧装置相对（19,39,53）的偏转运动， 相对于彼此相对于两个飞轮块的旋转运动，其中弹簧装置的特性曲线可以由齿轮装置（21,31,51,51“）改变。
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公开(公告)号：US20250008694A1
公开(公告)日：2025-01-02
申请号：US18882985
申请日：2024-09-12
Applicant: Ram BALACHANDAR , Abishek SRIDHAR , Lakshmi Varaha IYER , Gerd SCHLAGER
Inventor： Ram BALACHANDAR , Abishek SRIDHAR , Lakshmi Varaha IYER , Gerd SCHLAGER
Abstract: An impingement cooling system includes a porous heat spreader and a nozzle configured to direct a fluid as a jet and/or as a spray impinging upon the porous heat spreader. The porous heat spreader is made of a thermally-conductive material such as a metal, metal alloy, carbon/graphite, or ceramic, and is in thermal contact with a heat source. The nozzle may be configured to direct the fluid as a jet comprising a single component liquid or gas (including air) or a liquid mixture such as water-glycol or other coolants. The nozzle may be configured to direct the fluid as a spray comprising a single component liquid or gas (including air) or a liquid mixture such as water-glycol or other coolants. The cooling system may include one or more nozzles, which may direct the cooling fluid orthogonally or at an oblique angle to an impingement plate.
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公开(公告)号：US12166384B2
公开(公告)日：2024-12-10
申请号：US17440860
申请日：2020-03-19
Applicant: MAGNA INTERNATIONAL INC. , Lakshmi Varaha Iyer , Gerd Schlager , Alexander Exl , Mitch Reedy
Inventor： Lakshmi Varaha Iyer , Gerd Schlager , Alexander Exl , Mitch Reedy
Abstract: An electromagnetic machine includes a stator that includes a back plate and a plurality of electrical conductors radially disposed on the back plate. The electromagnetic machine also includes a rotor that includes a body having an outer diameter corresponding to an inner diameter of the stator and at least one magnet having a first end disposed proximate the stator and a second end disposed opposite the first end. The electromagnetic machine also includes an engaging member disposed on a shaft that extends axially relative to the rotor, the engaging member being configured to engage at least one recessed portion of the rotor.
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公开(公告)号：US20230179060A1
公开(公告)日：2023-06-08
申请号：US17925950
申请日：2021-05-18
Applicant: Abishek SRIDHAR , Ram BALACHANDAR , Ronald Michael BARRON , Lakshmi Varaha IYER , Gerd SCHLAGER , Martin WINTER
Inventor： Abishek SRIDHAR , Ram BALACHANDAR , Ronald Michael BARRON , Lakshmi Varaha IYER , Gerd SCHLAGER , Martin WINTER
Abstract: A cooling jacket for an electric motor comprises a fluid passage disposed adjacent to a stator and configured to convey a cooling fluid. The cooling jacket includes a flow mixing enhancer within the fluid passage adjacent an axial end of the stator. The flow mixing enhancer includes baffles, a porous fibrous structure, and/or an open-cell foam to provide greater thermal conductance at a region adjacent to the axial ends than it provides to a central region therebetween. A flow bridge directs the cooling fluid through circumferential flow paths adjacent to both of the axial ends before the cooling fluid is circulated in a central flow path around the central region of the stator. One or more nozzles direct a jet of cooling fluid upon the stator end winding, a rotor end winding, and/or printed circuit board. A ring-shaped coolant header may supply the cooling fluid to the nozzles.
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公开(公告)号：US20220286040A1
公开(公告)日：2022-09-08
申请号：US17635904
申请日：2020-08-14
Applicant: Wolfgang BAECK , Michael NEUDORFHOFER , Gerd SCHLAGER , Lakshmi Varaha IYER , Philip KORTA , MAGNA INTERNATIONAL INC.
Inventor： Wolfgang BAECK , Michael NEUDORFHOFER , Gerd SCHLAGER , Lakshmi Varaha IYER , Philip KORTA
Abstract: A power electronic converter supplies DC output power to an output bus for supplying a load, such as a battery. The power electronic converter includes a DC link capacitor configured to provide a DC link voltage with a ripple of 80 V peak-to-peak. The power electronic converter also includes a DC/DC stage having a DC/AC converter that includes one or more switches to selectively conduct current from the DC link bus to supply an AC power to a transformer. The switches of the DC/AC converter are mounted to an insulated metal substrate that is in thermal contact with a transformer housing for dissipating heat therefrom. A controller controls one or more switches of the DC/AC converter and varies a switching frequency responsive to the ripple of the DC link voltage.
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