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公开(公告)号：US09919903B2
公开(公告)日：2018-03-20
申请号：US14656370
申请日：2015-03-12
发明人： Charles Patrick , Kevin R. Williams
CPC分类号： B66D1/12 , B66D1/485 , H02P25/184 , H02P25/188 , H02P27/047 , H02P2207/01
摘要： A multi-speed electric motor may include a plurality of windings arranged into winding phase groups. A speed controller may switch two or more windings between a series and a parallel configuration in each winding phase group. The speed controller may also switch the winding phase groups between a delta and a Wye configuration. By selecting a specific configuration, one or more of the holding torque, torque ratio, no-load maximum speed, and volts/Hz ratio of the AC motor may be optimized for a given application. In some embodiments, the AC motor may be used as part of a piece of drilling rig equipment such as a drawworks, winch, mud pump, top drive, or rotary table.
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122.发明授权公开(公告)号：US09914362B2
公开(公告)日：2018-03-13
申请号：US14139059
申请日：2013-12-23
发明人： Khai Doan The Ngo , Hui Wang
IPC分类号： H02J7/00 , G05F1/70 , H02P23/00 , H02P25/00 , H02P27/00 , B60L11/18 , H02M1/14 , H02M1/42 , H02M7/5387
CPC分类号： B60L11/1803 , B60L11/1812 , B60L2210/14 , B60L2220/54 , B60L2240/526 , B60L2240/527 , B60L2240/529 , H02M1/14 , H02M1/4225 , H02M7/5387 , Y02T10/641 , Y02T10/7005 , Y02T10/7072 , Y02T10/7225 , Y02T90/127 , Y02T90/14
摘要： Switches of a switching circuit used to control operation of an electric motor such as in an electrically powered vehicle connect respective windings of the electric motor as a single phase inductor during battery charging. The inductor can then store inherent low frequency, second order ripple power and return that power to a load presented by a battery during battery charging to deliver substantially constant current. Storage of ripple power in the inductor allows the capacitance value, size, weight and cost of a filter capacitor of a power factor correction circuit providing input power to a battery charger to be reduced by an order of magnitude or more. Direction of current flow through the inductor is periodically reversed to avoid magnetizing the motor.
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公开(公告)号：US09825578B2
公开(公告)日：2017-11-21
申请号：US15112573
申请日：2014-02-17
发明人： Tetsuo Sugahara
摘要： Object of the present disclosure is to improve accuracy of over-temperature protection of an electric motor. A control device controls an inverter main circuit for driving the electric motor. An electric power conversion circuit controller acquires DC voltage input to the inverter main circuit, output voltage of the inverter main circuit, motor amperage of current flowing through the electric motor, and motor frequencies indicating rotation rate of the electric motor. Based on at least one of the DC voltage, output voltage, motor amperage and motor frequencies, a motor loss estimator calculates a stator loss and rotor loss, each including fundamental and harmonic losses of the electric motor. Based on the inverter output voltage, stator loss and rotor loss, the electric power conversion circuit controller outputs an actual control value for control of the inverter main circuit.
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公开(公告)号：US09748885B2
公开(公告)日：2017-08-29
申请号：US15265274
申请日：2016-09-14
发明人： Margaret G. Brier , John K. Buyco , Chelsea R. Fischbach , Scott M. Ogilvie , Johnson Qu , Ayyappa P. Vemulkar
IPC分类号： H02P25/00 , H02P25/06 , B60L13/03 , B60L7/10 , B60L7/14 , B60L7/26 , B60L7/28 , B60L11/18 , H02P3/14 , B60L15/20 , B60L3/12 , B60L15/00
CPC分类号： H02P25/06 , B60L3/12 , B60L7/10 , B60L7/14 , B60L7/26 , B60L7/28 , B60L11/1803 , B60L13/03 , B60L15/005 , B60L15/20 , B60L2200/12 , B60L2200/26 , B60L2200/36 , B60L2220/12 , B60L2240/12 , B60L2240/14 , H02P3/14 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/7275
摘要： Present example embodiments relate generally to a ground transportation system for interacting with one or more vehicles, the vehicle comprising at least one magnetic element fixedly attached to the vehicle, each magnetic element operable to generate a magnetic field having a first magnitude and a first direction, the system comprising a magnetic coil assembly fixedly positioned near an area traversable by the vehicle and comprising a core and a magnetic wire coil wrapped around the core, the magnetic coil assembly operable to generate a magnetic field having a second magnitude and a second direction; and an energy storage unit operable to release energy to and store energy from the magnetic coil assembly.
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公开(公告)号：US09716449B2
公开(公告)日：2017-07-25
申请号：US14242055
申请日：2014-04-01
CPC分类号： H02P6/28 , F04B47/022 , H02P6/182 , H02P23/24
摘要： A system and method are provided for reducing the energy consumed by a pump jack electric motor by reducing the supply voltage to the motor when the motor would be generating energy in open loop mode. By substantially eliminating the energy generation mode, the braking action of the utility grid in limiting the acceleration of the motor and system that would otherwise occur is substantially removed. The motor and system will speed up, allowing the natural kinetic energy of the cyclic motion to perform part of the pumping action. In particular, when the energy consumption for the electric motor connected with the device having a rotating or reciprocating mass goes to zero, the line voltage to the motor is switched off, causing the frequency of the voltage across the motor terminals to increase. When the period of the voltage across the motor terminals returns to substantially the same as the period of the line voltage, the line voltage is switched on or reapplied to the motor.
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公开(公告)号：US09634551B2
公开(公告)日：2017-04-25
申请号：US14698835
申请日：2015-04-28
申请人： Clifford R. Rabal
发明人： Clifford R. Rabal
CPC分类号： H02P11/04 , H02J7/0068 , H02J7/35 , H02K7/025 , H02K21/24 , H02K29/06 , H02K47/14 , H02K53/00 , H02P6/16 , Y10S74/09
摘要： A motor includes a frame, a shaft rotatably mounted onto the frame, and at least one disc mounted onto the shaft. At least one permanent magnet is mounted on the disc, and at least one electromagnet and at least one coil are mounted to the frame in rotational magnetic proximity to the permanent magnet. A battery is connectable to the electromagnet and the coil for energizing the electromagnet and for receiving electrical current from the coil for charging the battery. A relay switch controls the transmission of electrical power from the battery to the electromagnet. A sensor generates a signal to the relay switch to activate electrical power to the electromagnet upon sensing that the permanent magnet is positioned with respect to the electromagnet such that a magnetic force generated by the electromagnet would be effective for inducing movement of the permanent magnet and consequent rotation of the disc.
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公开(公告)号：US09553494B2
公开(公告)日：2017-01-24
申请号：US14806868
申请日：2015-07-23
申请人： ARM Limited
发明人： David Pietromonaco
IPC分类号： H02P25/00 , H02K11/00 , H02P25/02 , H02K17/16 , H02K1/06 , H02K16/02 , H02K99/00 , H02K17/24
CPC分类号： H02K16/02 , H02K1/06 , H02K17/165 , H02K17/24 , H02K99/20 , H02P25/022 , H02P25/024
摘要： An electric motor apparatus and method of controlling the same are provided. The electric motor apparatus includes a stator and a rotor rotationally mounted coaxially with the stator; an intermediate screen having a magnetic material and rotationally mounted between the stator and the rotor to provide magnetic screening between the rotor and the stator; and control circuitry to control power supplied to windings on the rotor and the stator in dependence upon a desired output rotational speed.
摘要翻译： 提供一种电动机装置及其控制方法。 电动机装置包括：定子和与该定子同轴旋转地安装的转子; 具有磁性材料并旋转地安装在定子和转子之间的中间屏幕，以在转子和定子之间提供磁屏蔽; 以及控制电路，用于根据期望的输出转速来控制提供给转子和定子上绕组的功率。
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128.发明授权System and method for timed insertion of a phase shift capacitor upon powering a split capacitor electrical motor 有权对分相电容器电动马达供电时定时插入相移电容器的系统和方法公开(公告)号：US09479104B1
公开(公告)日：2016-10-25
申请号：US14686045
申请日：2015-04-14
摘要： A power circuit is configured with mostly passive electrical components to connect a phase shift capacitor to a phase shift winding of a PSC motor selectively. The power circuit includes a timing circuit, a switching circuit, and a triac having a first anode connected to the second capacitor and a second anode connected to electrical ground. The timing circuit has a plurality of passive electrical components and a single active comparator configured to generate a signal indicative of an expiration of a predetermined time period after application of a line voltage to the motor. The switching circuit has a plurality of passive electrical components and a single active switch, which generates a signal to operate the triac to electrically connect the second capacitor to the second winding during the predetermined time period and to disconnect electrically the second capacitor from the second winding in response to a signal generated by the timing circuit indicating the predetermined time period has expired.
摘要翻译： 电源电路配置有大部分无源电气部件，用于选择性地将相移电容器连接到PSC电动机的相移绕组。 电源电路包括定时电路，开关电路和具有连接到第二电容器的第一阳极和连接到电接地的第二阳极的三端双向可控硅开关。 定时电路具有多个无源电组件和单个有源比较器，该单一有源比较器被配置为在向电动机施加线路电压之后产生指示预定时间段期满的信号。 开关电路具有多个无源电气部件和单个有源开关，其产生用于操作三端双向可控硅开关的信号，以在预定时间段期间将第二电容器电连接到第二绕组，并且将第二电容器与第二绕组 响应于由指示预定时间段的定时电路产生的信号已经期满。
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公开(公告)号：US09463713B2
公开(公告)日：2016-10-11
申请号：US15042250
申请日：2016-02-12
发明人： James E. Walters , Ronald J. Krefta
IPC分类号： G01C21/00 , H02P25/00 , B60L15/20 , B60W50/02 , B60W50/04 , H02P6/16 , B60W20/00 , B60L3/12 , B60K6/26 , G01D5/244
CPC分类号： B60L15/20 , B60K6/26 , B60L3/12 , B60L2210/30 , B60L2210/40 , B60L2240/42 , B60L2240/421 , B60L2240/423 , B60L2240/429 , B60L2240/526 , B60L2240/529 , B60L2260/42 , B60L2270/147 , B60W20/00 , B60W20/50 , B60W50/02 , B60W50/04 , B60W2050/0057 , B60W2050/0215 , B60Y2200/92 , B60Y2300/60 , G01D5/24476 , H02P6/16 , H02P2203/05 , Y02T10/644 , Y02T10/645 , Y02T10/7241 , Y02T10/7275 , Y10S903/903
摘要： A system and method for controlling a rotating E-machine and for correcting a rotational position signal output by an angular position sensor operatively connected to the E-machine in conjunction with a sensor digital converter is disclosed. For each angular operating speed of interest, a set of signals as a function of position is taken such that the harmonics (or sub-harmonics) related to the position sensor may be determined and isolated from errors due to an associated digital converter. From this information, the magnitude and phase of the position sensor harmonics is determined. The effects of the sensor digital converter (or other signal processing equipment) are then determined and accounted for, allowing the control system to apply the total position error signal to the position sensor output signal to determine a corrected position sensor signal for use in controlling the E-machine.
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公开(公告)号：US09444383B2
公开(公告)日：2016-09-13
申请号：US14578724
申请日：2014-12-22
发明人： Rastislav Uhrin
CPC分类号： H02P21/141 , H02P23/03 , H02P2207/01
摘要： Electromagnetic state variables of an electromagnetic machine are represented by space vectors. A setpoint value for the vector of a manipulated voltage at the stator is preset and an actual value of the vector of the current at the stator is measured. A vector of an induced voltage is determined from the setpoint value and the actual value of the vector of the current. A value of a vector of the magnetic flux is estimated from a preset correction voltage and the induced voltage. A phase angle and a rotating field frequency are estimated from the vector of the magnetic flux. A factor is multiplied into the vector of the correction voltage when a torque-forming component of a current at the stator has an opposite mathematical sign to the estimated value of the rotating field frequency.
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