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公开(公告)号：EP4216401A1
公开(公告)日：2023-07-26
申请号：EP23152309.3
申请日：2023-01-18
发明人： COLLINGS, Henry , BOWMAN, Liam
摘要： The present disclosure is directed to slotless electric motor, in particular, to a method of manufacturing a stator for a slotless electric motor. An aspect of the disclosure provides a method of manufacturing a stator for a slotless electric motor, the method comprising: disposing a conductor in the shape of an annular cylinder; bonding a plurality of bonded lengths of the conductor, wherein the plurality of bonded lengths are separated by non-bonded lengths; folding the conductor to provide a plurality of petals repeated along the conductor, wherein each petal comprises a pair of bonded lengths connected by a non-bonded length; rotating each petal about a point on the second circle to align in parallel the bonded lengths of all of the petals to thereby provide a stator comprising a cylindrically-shaped conductor wherein the bonded lengths are equidistantly disposed around and from a central longitudinal axis of the cylindrically-shaped conductor.
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公开(公告)号：EP4293895A1
公开(公告)日：2023-12-20
申请号：EP23177821.8
申请日：2023-06-06
发明人： BOWMAN, Liam , CHEESEMAN, Alistair
摘要： An energy management system for an electric motor is disclosed herein. The energy management system comprises a bi-directional energy converter comprising a first input/output terminal and a second input/output terminal, a first waveform controller, and a second waveform controller. The bi-directional energy converter is coupled to the first waveform controller and to the second waveform controller, and is configured to operate in a primary mode and secondary mode wherein in the primary mode the bi-directional energy converter is configured to generate output voltages from input voltages wherein the output voltages are greater than the input voltages and wherein in the secondary mode the bi-directional energy converter is configured to generate output voltages from the input voltages wherein the output voltages are less than the input voltages.
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公开(公告)号：EP4236038A3
公开(公告)日：2023-11-22
申请号：EP23181098.7
申请日：2022-06-23
发明人： BOWMAN, Liam , LANDGRAF, Johannes
IPC分类号： H02K1/2783 , H02K1/2792 , H02K1/30
摘要： A rotor for an electric machine is disclosed herein. The rotor comprises: a central shaft; a rotor drum arranged radially outward of the central shaft, wherein the rotor drum comprises a hollow cylinder for carrying permanent magnets on an inner and/or outer surface of the hollow cylinder, and wherein the rotor drum is coaxial with both the central shaft and a rotational axis of the rotor; and a cap arranged to couple the central shaft to the rotor drum to enable the rotor drum and central shaft to rotate together about the rotational axis. An inner portion of the cap is coupled to the central shaft at a first position along the length of the rotational axis, and an outer portion of the cap is coupled to the rotor drum at a second position along the length of the rotational axis. The first position is at a different length along the rotational axis to the second position.
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公开(公告)号：EP4274068A2
公开(公告)日：2023-11-08
申请号：EP23198664.7
申请日：2023-01-18
发明人： Bowen, Liam , Collings, Henry
IPC分类号： H02K15/06
摘要： The present disclosure is directed to slotless electric motor, in particular, to a method of manufacturing a stator for a slotless electric motor. An aspect of the disclosure provides a method of manufacturing a stator for a slotless electric motor, the method comprising: disposing a conductor in the shape of an annular cylinder; bonding a plurality of bonded lengths on the conductor, wherein the plurality of bonded lengths are separated by non-bonded lengths; folding the conductor to provide a plurality of petals repeated along the conductor, wherein each petal comprises a pair of bonded lengths connected by a non-bonded length; rotating each petal about a point on the second circle to align in parallel the bonded lengths of all of the petals to thereby provide a stator comprising a cylindrically-shaped conductor wherein the bonded lengths are equidistantly disposed around and from a central longitudinal axis of the cylindrically-shaped conductor.
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公开(公告)号：EP4236038A2
公开(公告)日：2023-08-30
申请号：EP23181098.7
申请日：2022-06-23
发明人： BOWMAN, Liam , LANDGRAF, Johannes
IPC分类号： H02K1/32
摘要： A rotor for an electric machine is disclosed herein. The rotor comprises: a central shaft; a rotor drum arranged radially outward of the central shaft, wherein the rotor drum comprises a hollow cylinder for carrying permanent magnets on an inner and/or outer surface of the hollow cylinder, and wherein the rotor drum is coaxial with both the central shaft and a rotational axis of the rotor; and a cap arranged to couple the central shaft to the rotor drum to enable the rotor drum and central shaft to rotate together about the rotational axis. An inner portion of the cap is coupled to the central shaft at a first position along the length of the rotational axis, and an outer portion of the cap is coupled to the rotor drum at a second position along the length of the rotational axis. The first position is at a different length along the rotational axis to the second position.
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公开(公告)号：EP4199329A1
公开(公告)日：2023-06-21
申请号：EP22213768.9
申请日：2022-12-15
发明人： BOWMAN, Liam
摘要： The present invention relates to a slotless motor comprising a rotor position sensing element. The motor has a rotor having a rotational axis and a plurality of coil windings arranged into an integer N number of distinct blocks, each block being arranged about the rotational axis and having a gap between each adjacent pair of blocks. The rotor position element has a sensor ring having a sensor fixed to the sensor ring and a sensor ring attachment extending from the sensor ring wherein the sensors are spaced around the rotational axis and wherein the rotor position sensing element is configured to hold the sensor ring relative to at least one of the blocks such that the sensor is held in a predetermined position.
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公开(公告)号：EP4274068A3
公开(公告)日：2024-02-07
申请号：EP23198664.7
申请日：2023-01-18
发明人： Bowen, Liam , Collings, Henry
摘要： The present disclosure is directed to slotless electric motor, in particular, to a method of manufacturing a stator for a slotless electric motor. An aspect of the disclosure provides a method of manufacturing a stator for a slotless electric motor, the method comprising: disposing a conductor in the shape of an annular cylinder; bonding a plurality of bonded lengths on the conductor, wherein the plurality of bonded lengths are separated by non-bonded lengths; folding the conductor to provide a plurality of petals repeated along the conductor, wherein each petal comprises a pair of bonded lengths connected by a non-bonded length; rotating each petal about a point on the second circle to align in parallel the bonded lengths of all of the petals to thereby provide a stator comprising a cylindrically-shaped conductor wherein the bonded lengths are equidistantly disposed around and from a central longitudinal axis of the cylindrically-shaped conductor.
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公开(公告)号：EP4191840A1
公开(公告)日：2023-06-07
申请号：EP22210352.5
申请日：2022-11-29
发明人： BOWMAN, Liam , MORGAN, David
摘要： The present invention relates to a slotless motor including a thin-walled hollow rotor body 100, and methods of manufacture of such rotors, the methods including hot forming and machining steps. The rotor body has a rotational axis 102 and comprises a first cylindrical portion 104 having a first diameter, a second cylindrical portion 106 having a second diameter, larger than the first diameter and a third cylindrical portion 108 having a third diameter, smaller than the second diameter, the third cylindrical portion located at a second end of the rotor body 100. A first end cap 110 joins the first and second cylindrical portions together, and a second end cap 112 joins the first and second cylindrical portions together. The first, second and third cylindrical portions are all arranged coaxially with the rotational axis 102 of the rotor 100 such that the second cylindrical portion 108 and the first and second end caps collectively define a hollow cavity 114 in the rotor body 100. The rotor body 100 may be provided with a Halbach array.
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