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公开(公告)号：US10411574B2
公开(公告)日：2019-09-10
申请号：US15590533
申请日：2017-05-09
申请人： DENSO CORPORATION
发明人： Kotaro Nakashima
IPC分类号： H02K17/30 , H02K23/66 , G01D5/14 , H02K9/06 , H02K21/04 , H02M7/5387 , H02K3/28 , H02K5/22 , H02K11/33 , H02M1/32
摘要： An electronic control unit includes two inverters, a magnetic sensor, a failure detection unit, an inverter driving unit, a signal examination unit, and a failed element identification unit. The magnetic sensor detects a magnetic flux generated around a winding. The failure detection unit detects an ON-state failure of the inverter. When the ON-state failure is detected, the inverter driving unit stops driving the inverter to which the ON-state failure has been detected, and continues driving the other inverter. The signal examination unit examines a presence or absence of a special signal. When there is a signal appearing according to a special magnetic flux, the failed element identification unit identifies a failed switching element based on a motor electric angle generated by the signal.
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公开(公告)号：US20190252931A1
公开(公告)日：2019-08-15
申请号：US16333966
申请日：2017-09-13
申请人： DENSO CORPORATION
发明人： Yuuki TAKAHASHI
摘要： In a rotary electrical machine, a rotor has a field core, a field winding, and a cylindrical short-circuit member. The field core has a cylindrical boss part and a plurality of magnetic pole parts that are disposed on the outer peripheral side of the boss part and in which magnetic poles of different polarities are alternately formed in the circumferential direction. The field winding is wound on the outer peripheral side of the boss part. The short-circuit member is disposed on the outer peripheral sides of the magnetic pole parts and magnetically connects together the magnetic pole parts adjacent to each other in the circumferential direction. A surface of the short-circuit member opposed to the stator is formed in a concave-convex shape in which protrusion portions protruding along the radial direction and groove portions recessed along the radial direction are disposed alternately and continuously with each other.
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公开(公告)号：US20190180899A1
公开(公告)日：2019-06-13
申请号：US15839702
申请日：2017-12-12
申请人： The Boeing Company
发明人： Shengyi Liu , Lijun Gao
摘要： Systems, methods, and apparatus for secondary windings to modify a permanent magnet (PM) field of a permanent magnet synchronous generator (PMSG) are disclosed. In one or more embodiments, a disclosed system for a PMSG comprises a permanent magnet (PM) of the PMSG to rotate and to generate a permanent magnet field. The system further comprises a plurality of stator primary windings (SPW), of the PMSG, to generate primary currents from the permanent magnet field. Further, the system comprises a plurality of stator secondary windings (SSW), of the PMSG, to draw secondary currents from a power source, and to generate a stator secondary winding magnetic field from the secondary currents. In one or more embodiments, the permanent magnet field and the stator secondary winding magnetic field together create an overall magnetic field for the PMSG.
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公开(公告)号：US20190157954A1
公开(公告)日：2019-05-23
申请号：US16305847
申请日：2017-06-01
申请人： DENSO CORPORATION
发明人： Yuki TAKAHASHI , Tomokazu HISADA
IPC分类号： H02K21/04
摘要： A rotor of a rotating electric machine includes a field core having a cylindrical boss portion, and a plurality of claw-shaped magnetic pole portions that are arranged on the outer side of the boss portion and form poles of alternately different polarities in the circumferential direction, a field winding that is wound around the outer periphery of the boss portion and generates a magnetomotive force by energization, a permanent magnet disposed between the circumferentially adjacent claw-shaped magnetic pole portions so as to have its easy axis of magnetization oriented in the circumferential direction and have its polarity coincide with the polarity of the claw-shaped magnetic pole portions which alternately appears by excitation, and a magnetic flux short circuit member having a short circuit portion that magnetically connects the claw-shaped magnetic pole portions circumferentially arranged to have different polarities.
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公开(公告)号：US20190157918A1
公开(公告)日：2019-05-23
申请号：US16260649
申请日：2019-01-29
摘要： A generator includes a stator that has permanent magnets that complete a magnetic circuit across a series of gaps and through a generator coil. The rotor also includes permanent magnets that complete a magnetic circuit across a gap and through a rotor coil. When the rotor poles align with the stator poles, the stator and rotor magnetic circuits are broken, and new magnetic circuits are completed between the stator and rotor permanent magnets that cross the gap between the stator and rotor poles. A rotor coil can be used to boost the attraction/repulsion between to rotor and stator magnets. Alternating between these magnetic circuits as the prime mover rotates the rotor generates electricity.
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公开(公告)号：US20190123602A1
公开(公告)日：2019-04-25
申请号：US16170791
申请日：2018-10-25
发明人： Enrico CARRARO
摘要： A Rotor of a claw pole machine (12), having a rotor winding (5), which is surrounded by pole fingers of claw poles, for generating an excitation field, and having permanent magnets (8, 10), wherein two permanent magnets (8), which are arranged offset in the circumferential direction and have a magnetization in the circumferential direction, are allocated to a pole finger (3) in the axial direction next to the pole finger, a magnetic flux guiding element (9) being arranged between the two permanent magnets (8).
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公开(公告)号：US10263554B2
公开(公告)日：2019-04-16
申请号：US15744200
申请日：2015-07-17
发明人： Masanori Nakagawa
摘要： A power supply device for an internal combustion engine, using a generator driven by an internal combustion engine as a power source and supplying power to a first load that needs to be constantly driven to cause the internal combustion engine to operate and a second load that is permitted not to drive during startup of the engine, wherein a first generation coil for driving the first load and a second generation coil for driving the second load are provided to be magnetically-coupled tightly in the generator, and voltage supplied to a load is boosted to a higher voltage value than conventionally achieved by performing chopper control of an energizing current of the first generation coil and an energizing current of the second generation coil while preventing energization from the second generation coil to a load.
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公开(公告)号：US10263500B2
公开(公告)日：2019-04-16
申请号：US15859687
申请日：2018-01-01
IPC分类号： H02K1/27 , H02K21/14 , H02K21/28 , H02K21/02 , H02K7/12 , H02K1/02 , H02K21/04 , H02K21/16 , H02K41/03 , H02P25/08 , H02K1/14
摘要： An electric machine includes a rotor having a magnetic field generating device for generating a magnetic flux. A flux changing apparatus of the electric machine includes an axially displaceable body that is disposed axially outside the magnetic field generating device for changing a magnetic flux within a gap between the rotor and a stator in dependence upon an axial position of the body relative to the rotor. The flux changing apparatus includes an adjusting device for axially adjusting the axial position of the body relative to the rotor. The adjusting device includes an actuator and an adjusting element. The actuator acts on the body via the adjusting element. The adjusting element engages the body and/or the actuator in such a manner that a rotational movement of the body can be decoupled from the adjusting element, a housing of the electric machine, the rotor and/or the actuator.
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公开(公告)号：US10250094B2
公开(公告)日：2019-04-02
申请号：US15160265
申请日：2016-05-20
发明人： Chun-Yuan Wang , Ming-Laang Liou
摘要： The present invention relates to a wound stator of an alternator, which comprises: a stator and a group of wires wound thereon. The group of wires comprises a plurality of abreast wires sequentially embedded in corresponding grooves of the stator, and the abreast wires in the grooves are oriented in a radial direction of the stator.
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公开(公告)号：US10193401B1
公开(公告)日：2019-01-29
申请号：US15881434
申请日：2018-01-26
摘要： A generator includes a stator that has permanent magnets that complete a magnetic circuit across a series of gaps and through a generator coil. The rotor also includes permanent magnets that complete a magnetic circuit across a gap and through a rotor coil. When the rotor poles align with the stator poles, the stator and rotor magnetic circuits are broken, and new magnetic circuits are completed between the stator and rotor permanent magnets that cross the gap between the stator and rotor poles. A rotor coil can be used to boost the attraction/repulsion between to rotor and stator magnets. Alternating between these magnetic circuits as the prime mover rotates the rotor generates electricity.
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