-
公开(公告)号：US3758845A
公开(公告)日：1973-09-11
申请号：US3758845D
申请日：1971-11-01
申请人： GEN ELECTRIC CANADA
CPC分类号： H01F38/18 , G01R31/343 , H02K11/25
摘要： This invention relates to a rotary transformer having both windings prewound in a flat rectangular skein for transmitting signals between the rotor and stator of a dynamoelectric machine. Suitably, one skein is wrapped flatwise around, and secured to, the rotor shaft with the second skein being fixedly secured to the stator in a concentric attitude relative to the first skein to permit rotary transformer action between the skeins. In a second disclosed embodiment both rectangular skeins are bent in an arcuate configuration about the rotor axis and are disposed in parallel planes at displaced locations along the axis of rotation. The two coils are designed such that they are coupled inductively at all times during rotation of the rotor.
摘要翻译： 本发明涉及一种旋转变压器，其具有在扁平矩形绞盘中预卷绕的两个绕组，用于在电动机的转子和定子之间传递信号。 适当地，一个绞盘被平坦地卷绕并固定到转子轴上，其中第二个绞盘以相对于第一绞盘的同心姿态固定地固定到定子，以允许旋转变压器在绞线之间起作用。 在第二个公开的实施例中，两个矩形绞盘以围绕转子轴线的弧形构造弯曲，并且沿着旋转轴线在位移位置处设置在平行的平面中。 两个线圈被设计成使得它们在转子旋转期间一直被感应地耦合。
-
公开(公告)号：US12095312B2
公开(公告)日：2024-09-17
申请号：US17824474
申请日：2022-05-25
申请人： MAKITA CORPORATION
发明人： Junya Inuzuka
摘要： A sensor board is downsized. An electric work machine includes a stator, a rotor rotatable about a rotation axis, magnetic sensors, a sensor board supporting the magnetic sensors, and an output unit drivable by the rotor. The stator includes a stator core, an insulator, and coils including first-, second-, and third-phase coils. The rotor includes a rotor core and magnets fixed to the rotor core. The magnetic sensors detect the magnets and include, in a circumferential direction, a first magnetic sensor aligned with at least a portion of a first coil pair, a second magnetic sensor aligned with at least a portion of a second coil pair, and a third magnetic sensor aligned with at least a portion of a third coil pair.
-
公开(公告)号：US12038275B2
公开(公告)日：2024-07-16
申请号：US17800242
申请日：2021-03-23
发明人： Yoshitomo Nakamura , Shinichiro Yoshida , Hisanori Torii , Masanori Nimura , Shizuka Ueda , Yuji Kubo , Takuya Noguchi , Akira Yokoyama , Takeshi Musha , Yoshinori Miyamoto
摘要： The present disclosure includes: a magnetic member configured to cause a large Barkhausen effect; a power generation coil disposed so as to be wound around the magnetic member; and soft magnetic members formed at both end portions of the magnetic member so as to be in contact with the magnetic member and so as to press the magnetic member. Consequently, evenness of a magnetic flux density inside the magnetic member is increased, and the large Barkhausen effect is stably caused, whereby a highly stable power generation element is obtained.
-
公开(公告)号：US12027935B2
公开(公告)日：2024-07-02
申请号：US17487184
申请日：2021-09-28
摘要： A vibration actuator includes a fixing body including a base part, and a magnetic suction force generation part provided at a core on which a coil is wound; a movable body including a connecting part, and a suction part suctioned by the magnetic suction force generation part through energization to the coil; and a plurality of elastic support parts. The suction part is disposed in a vicinity of a magnetic pole of the core of the magnetic suction force generation part with an air gap between the suction part and the magnetic pole in a vibration direction, and the suction part is disposed at a center portion in the vibration direction of the movable body supported by the plurality of elastic support parts.
-
95.发明公开公开(公告)号：US20240201263A1
公开(公告)日：2024-06-20
申请号：US18066912
申请日：2022-12-15
CPC分类号： G01R31/343 , H02K5/225 , H02K11/20 , G01R27/025
摘要： In some examples, a system includes a high-voltage motor coupled to multiple motor leads housed within a terminal box, a power supply coupled to the multiple motor leads, and a voltage injection device coupled to the power supply and the multiple motor leads, the voltage injection device configured to couple to a data acquisition system.
-
公开(公告)号：US20240154461A1
公开(公告)日：2024-05-09
申请号：US18547992
申请日：2022-03-01
申请人： OMRON Corporation
发明人： Takeshi KIRIBUCHI
摘要： A motor receives power from a driver external to the motor through a power line. The motor includes an extractor that extracts a part of power supplied from the driver to the motor, and a supply unit that supplies the power extracted by the extractor to an external device. This structure allows stable power supply to the external device associated with the motor.
-
97.发明授权公开(公告)号：US11955911B2
公开(公告)日：2024-04-09
申请号：US17782737
申请日：2020-09-07
发明人： Hiromu Fujimagari
CPC分类号： H02P21/14 , G01R19/0092 , G01R31/34 , G01R31/343 , G01R31/346 , H02P27/06 , H02K11/20 , H02K11/35 , H02K15/00
摘要： A pulse voltage generator calculates a corrected pulse voltage application time. The pulse voltage generator also outputs, for the duration of the corrected pulse voltage application time, a voltage vector closest to a rotor phase from among twelve voltage vectors as a voltage vector command. A current detector detects three-phase output currents of a power converter, which are obtained when first to sixth switching elements of the power converter are turned on or off on the basis of the voltage vector command. A three-phase/two-phase converter converts the three-phase output currents to two-phase output currents to output d-axis current. When the d-axis current after the corrected pulse voltage application time has elapsed becomes less than or equal to a demagnetization determination threshold value, a demagnetization determiner determines that demagnetization occurs in a permanent magnet of a rotor of a motor.
-
公开(公告)号：US11942832B2
公开(公告)日：2024-03-26
申请号：US17644545
申请日：2021-12-15
申请人： Dana Belgium N.V.
发明人： Joachim Druant , Steven Vanhee
摘要： The present document relates to an electric drive unit, comprising: a stator configured to produce a stator magnetic field, at least a first rotor including first rotor windings, the first rotor windings for instance including multi-phase windings, and at least a first inverter electrically connected with the first rotor windings and configured to produce an electric current in the first rotor windings for producing a first rotor magnetic field. The stator magnetic field is configured to interact with the first rotor magnetic field to exert a torque on the first rotor. The present document further relates to a method of operating the electric drive unit.
-
公开(公告)号：US11942830B2
公开(公告)日：2024-03-26
申请号：US17818824
申请日：2022-08-10
CPC分类号： H02K11/20 , G01R31/343 , H02K11/35 , H02P21/22
摘要： An electric motor monitor having at least one sensor in electrical communication with a memory device and a motor. The memory device is configured to establish a performance baseline of the motor throughout its workload. The signal processing incorporates a memory device such as a microcomputer and/or a programmable logic controller configured to determine the work being performed by the motor by comparing the baseline performance of the motor throughout its work load to at least, the armature amperage of the motor. A wireless system transmits an operating motor's work parameters including, but not limited to, amperage, temperature, vibration, sound, rotation, power, moisture and/or voltage data, to a mobile or fixed base receiver. Data is accessible and viewable in real time. Alerts based on user-defined thresholds of the sensors are sent to an electronic device such as a tablet, a computer, and/or a smart phone.
-
公开(公告)号：US11885649B2
公开(公告)日：2024-01-30
申请号：US17657768
申请日：2022-04-04
发明人： Jacques Jean Bertin
摘要： In at least one general aspect, an inductive sensor can include a shaft having an axis of rotation, and a rotor physically coupled to the shaft and including a rotor coil. The rotor and the rotor coil can be aligned along a plane orthogonal to the axis of rotation. The inductive sensor can include a stator including a stator layer, an excitation coil, and an eccentricity receiver coil where the excitation coil and the eccentricity receiver coil are physically coupled to the stator layer.
-
-
-
-
-
-
-
-
-
搜索结果
505 条记录 (耗时 0.024 秒)
