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公开(公告)号：US10322640B2
公开(公告)日：2019-06-18
申请号：US14703924
申请日：2015-05-05
Applicant: Ford Global Technologies, LLC
Inventor： Yuan Zhang , Michael W. Degner
Abstract: A vehicle having a traction battery and at least one electric machine for propelling the vehicle is provided. A high voltage DC bus electrically connects the traction battery to the electric machine. A controller monitors and commands power flow through the DC bus, the electric machine, and the battery. In response to a key-off event, the controller immediately discharges the DC bus by providing a current to the electric machines. This discharge continues until the voltage on the DC bus reaches a threshold. As the speed of the electric machine decreases towards a speed threshold, the voltage in the DC bus is maintained. Once the electric machine speed reduces past the threshold, the DC bus discharges the remaining voltage in the DC bus at a rate slower than the first immediate discharge.
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公开(公告)号：US10259340B1
公开(公告)日：2019-04-16
申请号：US15890909
申请日：2018-02-07
Applicant: Ford Global Technologies, LLC
Inventor： Christopher Wolf , Michael W. Degner
Abstract: A system for a vehicle including an inverter electrically between a motor and traction battery, and a controller configured to operate the inverter at one of a predefined set of discrete frequencies selected according to rotor-torque-based probability weights corresponding to each of the discrete frequencies such that a probability that the inverter operates at the one changes as rotor torque changes.
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公开(公告)号：US10239407B2
公开(公告)日：2019-03-26
申请号：US15005671
申请日：2016-01-25
Applicant: Ford Global Technologies, LLC
Inventor： Lan Yu , Michael W. Degner
Abstract: A controller is configured to select a rate of change direction of an output voltage of a variable voltage converter (VVC) based on a direction of current flow associated with a capacitor of the VVC, and to adjust a magnitude of the rate of change direction based on directions of current flow associated with the capacitor and an electric machine coupled to the VVC.
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公开(公告)号：US20180334043A1
公开(公告)日：2018-11-22
申请号：US15597248
申请日：2017-05-17
Applicant: Ford Global Technologies, LLC
Inventor： Ke Zou , Chingchi Chen , Michael W. Degner
CPC classification number: B60L11/1811 , B60L11/1816 , B60Y2200/91 , B60Y2200/92 , B60Y2300/91 , B60Y2400/112 , H02J3/14 , H02J3/16 , Y10S903/903
Abstract: A powertrain for a vehicle includes a DC/DC converter and a controller. The DC/DC converter includes an inductor and output capacitor and is coupled between a traction battery and an electric drive unit. The controller may be configured to, in response to an electrical connection between the vehicle and an AC grid, couple the output capacitor and inductor in series and across terminals of the traction battery to absorb reactive power from the AC grid.
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公开(公告)号：US10122357B2
公开(公告)日：2018-11-06
申请号：US15350278
申请日：2016-11-14
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Xi Lu , Chingchi Chen , Michael W. Degner , Zhuxian Xu , Ke Zou
Abstract: An inverter for an electric vehicle drive has a bridge including a plurality of power switching devices having respective insulated gate terminals and emitter terminals. A PWM circuit determines switching commands for controlling the bridge. A plurality of gate drivers receive the switching commands and provide gate drive signals to respective gate terminals. A plurality of gate capacitors are each thermally coupled to a respective switching device and are electrically connected between the respective gate and emitter terminals. Each gate capacitor has a negative temperature coefficient adapted to counter changes in a switching speed of the switching devices over a predetermined range of temperature. As a result, a consistent switching speed is maintained so that power loss and switching device reliability are optimal across the full temperature range.
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Patent Agency Ranking
公开(公告)号：US20180241269A1
公开(公告)日：2018-08-23
申请号：US15435777
申请日：2017-02-17
Applicant: Ford Global Technologies, LLC
Inventor： Chun Tang , Feng Liang , Wei Wu , Michael W. Degner
CPC classification number: H02K3/28 , B60L15/025 , B60L2220/54 , B60L2220/58 , H02K16/04 , H02K2213/03 , H02K2213/12
Abstract: An electric machine includes a stator carrying two sets of multiphase windings. The sets are electrically isolated from each other and have an angular space displacement of A° electric corresponding to a torque ripple of harmonic order N. Responsive to current flow through the sets with a phase shift of A° electric, N±1 harmonic orders of resulting stator magnetic fields cancel to preclude formation of the torque ripple of harmonic order N.
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公开(公告)号：US10029573B2
公开(公告)日：2018-07-24
申请号：US14470428
申请日：2014-08-27
Applicant: Ford Global Technologies, LLC
Inventor： Allan Roy Gale , Michael W. Degner , Lu Chen , Paul Theodore Momcilovich
Abstract: A battery electrical vehicle or plug-in hybrid electric vehicle includes a battery which may be charged by an electrical charging station coupled to the electric power grid. To maximize the charging efficiency thus decreasing charge time, the voltage and current drawn from the power grid may be closely monitored. Based on the monitoring of the voltage and current of an electrical circuit powering a battery charger, a notification of changing conditions to charging characteristics including electric circuit wiring resistance, power loss or wiring efficiency may be generated.
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公开(公告)号：US20170271951A1
公开(公告)日：2017-09-21
申请号：US15072698
申请日：2016-03-17
Applicant: Ford Global Technologies, LLC
Inventor： Prasad Dev Hanumalagutti , Michael W. Degner , Franco Leonardi
Abstract: An electric machine for an electrified vehicle is provided. The electric machine may include a stator, a ring plate, an encasement, and a fastener. The stator defines a cavity, a stator recess about a portion of the cavity, and a stator aperture. The stator may include windings disposed within and partially protruding out of the cavity. The ring plate may be sized for disposal within the stator recess, and may define a tab and a plate aperture for alignment with the stator aperture. The encasement may define a key sized for engagement with the tab to secure the encasement to the ring plate, and a closed coolant channel. The fastener may be sized for insertion within the apertures to secure the plate to the stator. The stator, ring plate, and encasement may be arranged with one another such that the partially protruding windings are disposed within the closed coolant channel.
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公开(公告)号：US20170229933A1
公开(公告)日：2017-08-10
申请号：US15040304
申请日：2016-02-10
Applicant: Ford Global Technologies, LLC
Inventor： Franco Leonardi , Mark Allan Lippman , Michael W. Degner
CPC classification number: H02K1/276 , H02K1/04 , H02K1/16 , H02K1/2766 , H02K21/14 , H02K2201/03 , H02K2201/06 , H02K2201/15
Abstract: An electric machine may include a plurality of stator sections each formed from one or more stator laminations stacked to form a stator. The stator may have windings arranged therein to form magnetic poles. The stator may surround a rotor. A diamagnetic or paramagnetic stator layer may be interposed between at least one adjacent pair of the stator sections.
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公开(公告)号：US20170210233A1
公开(公告)日：2017-07-27
申请号：US15005671
申请日：2016-01-25
Applicant: Ford Global Technologies, LLC
Inventor： Lan Yu , Michael W. Degner
CPC classification number: B60L11/1803 , B60L11/08 , B60L11/12 , B60L11/14 , B60L11/1816 , B60L15/007 , B60L2210/10 , B60L2240/527 , B60L2240/529 , B60L2240/547 , B60L2240/549 , B60L2270/142 , H02M3/155 , Y02T10/645 , Y02T10/7005 , Y02T10/7022 , Y02T10/7072 , Y02T10/7077 , Y02T10/7216 , Y02T90/127 , Y02T90/14
Abstract: A controller is configured to select a rate of change direction of an output voltage of a variable voltage converter (VVC) based on a direction of current flow associated with a capacitor of the VVC, and to adjust a magnitude of the rate of change direction based on directions of current flow associated with the capacitor and an electric machine coupled to the VVC.
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