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公开(公告)号：US07750522B2
公开(公告)日：2010-07-06
申请号：US11779825
申请日：2007-07-18
申请人： Daniel Gizaw , David M. Erdman , Joseph E. Miller , Girma Desta
发明人： Daniel Gizaw , David M. Erdman , Joseph E. Miller , Girma Desta
IPC分类号： H02K21/12
CPC分类号： H02K21/22 , H02K1/16 , H02K1/2786 , H02K7/1823 , H02K7/183 , H02K7/1838 , H02K15/03 , H02K29/03 , H02K2201/06 , H02K2213/12 , Y10T29/49009 , Y10T29/49012
摘要： A direct-drive generator and assembly procedure for that generator include a permanent magnet assembly that is partitioned and assembled piece-by-piece after the rotor and stator have been attached.The magnets are attached to a plate in columns, and adjacent columns have a N-S orientation. The air gap between the rotor and stator is variable, and application of an input torque produces a first cogging torque in a first direction due to the variable air gap that offsets a second cogging torque in a second opposite direction.
摘要翻译： 用于该发电机的直接驱动发电机和组装程序包括永久磁铁组件，其在转子和定子已经被安装之后被分段和组装成一体。 磁体以柱形连接到板上，相邻的柱具有N-S取向。 转子和定子之间的空气间隙是可变的，并且由于可变气隙在第二相反方向上抵消第二齿槽转矩，输入扭矩的施加在第一方向上产生第一齿槽转矩。
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公开(公告)号：US07701095B2
公开(公告)日：2010-04-20
申请号：US11881856
申请日：2007-07-30
申请人： Daniel Gizaw , David M. Erdman , Joseph E. Miller , Girma Desta
发明人： Daniel Gizaw , David M. Erdman , Joseph E. Miller , Girma Desta
IPC分类号： H02K9/00
CPC分类号： H02K5/20 , H02K21/14 , H02K2201/06
摘要： The invention is a generator and cooling mechanism. The generator includes a rotor comprising a shaft with a skewed alignment of magnets on a ring, a stator of toothed laminations with coils wound around the teeth, and a housing with cooling chambers. The housing has annular subchambers arranged successively along the length of the generator in such a way that cooling fluid must flow to the opposite side of the generator to pass into the next chamber. Because the housing is highly heat conductive, this structure of annular subchambers increases the uniformity of the fluid temperature.
摘要翻译： 本发明是发电机和冷却机构。 该发电机包括一个转子，该转子包括一个轴，该轴具有一个环上的磁体的倾斜对准，一个具有缠绕在齿周围的线圈的齿形叠片的定子和一个具有冷却室的壳体。 壳体具有沿着发电机的长度连续布置的环形子室，使得冷却流体必须流动到发生器的相对侧以进入下一个室。 因为外壳是高度导热的，所以这种环形子室的结构增加了流体温度的均匀性。
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公开(公告)号：US5847524A
公开(公告)日：1998-12-08
申请号：US821247
申请日：1997-03-20
CPC分类号： H02P6/08
摘要： A motor having a power switching circuit adapted to be connected between a power source and its winding for selectively energizing the winding to generate a magnetic field which causes a rotating assembly to rotate. A position sensing circuit provides a position signal representative of the position of the rotating assembly and a commutating circuit controls the power switching circuit to commutate the power switching circuit at a commutating angle to achieve a desired rotating speed of the rotating assembly. The commutating circuit varies the commutating angle in response to the position signal to maintain the substantially constant rotating speed of the rotating assembly. As result, the efficiency of the motor is varied to maintain the substantially constant rotating speed.
摘要翻译： 一种电动机，其具有适于连接在电源和其绕组之间的功率开关电路，用于选择性地给绕组供电以产生使得旋转组件旋转的磁场。 位置检测电路提供表示旋转组件的位置的位置信号，并且整流电路控制功率开关电路以整流角度换向功率开关电路，以实现旋转组件的期望的转速。 整流电路响应于位置信号改变换向角度，以保持旋转组件的基本上恒定的转速。 结果，马达的效率变化以保持基本恒定的转速。
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14.发明授权Method of establishing a preferred rate of air flow, method of determining torque, and apparatus 失效确定优选空气流量的方法，确定扭矩的方法和装置
公开(公告)号：US4638233A
公开(公告)日：1987-01-20
申请号：US791026
申请日：1985-10-24
申请人： David M. Erdman
发明人： David M. Erdman
CPC分类号： G05D7/0676 , H02P6/08
摘要： A method of determining torque of an electronically commutated motor arranged to drive a blower means for flowing air through a contained space with the electronically controlled motor and the blower means having a combined predetermined inertia. In practicing this method, power is applied to the electronically commutated motor, and the blower means is thereby accelerated to a predetermined speed. The power is then removed from the electronically commutated motor, and thereby the blower means is decelerated. The deceleration of the blower means is measured, and the torque of the electronically commutated motor is computed from the measured deceleration.A method of establishing a preferred rate of air flow and apparatus are also disclosed.
摘要翻译： 一种确定电子换向马达的扭矩的方法，其布置成驱动用电子控制马达和鼓风机装置具有组合的预定惯性的空气使空气流过容纳空间的鼓风机装置。 在实施该方法时，将电力施加到电子换向马达，从而将鼓风机装置加速到预定速度。 然后从电子换向电动机中取出电力，从而使送风装置减速。 测量鼓风机装置的减速度，并根据测得的减速度计算电子换向马达的转矩。 还公开了一种确定优选的气流速率和装置的方法。
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15.发明授权Laundering apparatus, method of operating a laundry machine, control system for an electronically commutated motor, method of operating an electronically commutated motor, and circuit 失效洗衣机，洗衣机的操作方法，电子换向电动机的控制系统，电子换向电动机的操作方法以及电路
公开(公告)号：US4556827A
公开(公告)日：1985-12-03
申请号：US400214
申请日：1982-07-21
申请人： David M. Erdman
发明人： David M. Erdman
CPC分类号： H02P6/085 , D06F23/04 , D06F37/304 , F25B2600/021
摘要： A circuit for controlling the energization of an electrical load from an AC source. The circuit has a pair of DC lines, and means is provided for rectifying the AC output of the source to apply a DC voltage across the DC lines in the form of a full wave rectified sinusoidal signal. Signal switching means for connection between the DC lines and the load establishes a conductive path therebetween during a variable time interval when the voltage applied by the full wave rectified sinusoidal signal exceeds the voltage across the load, and means including the switching means is provided for chopping the full wave rectified sinusoidal signal to apply pulses to the load during the variable time interval at a frequency which is high with respect to the frequency of the signal. Means connected to the chopping means for modulating the width of the pulses is responsive to an externally derived signal representative of the desired operation of the load, and means is responsive to the load current for modifying the externally derived signal to maintain the amplitude of the load current below a predetermined level whereby a high power factor is presented to the AC source during a predetermined range of operation of the load.A method of operating an electronically commutated motor is also disclosed.
摘要翻译： 用于控制来自AC电源的电负载的通电的电路。 该电路具有一对DC线，并且提供用于整流源的AC输出的装置，以全波整流正弦信号的形式在DC线之间施加DC电压。 用于在直流线路和负载之间连接的信号切换装置在由全波整流的正弦信号施加的电压超过负载两端的电压的可变时间间隔期间建立导电路径，并且包括开关装置的装置被提供用于切断 全波整流正弦信号，在可变时间间隔内以相对于信号频率高的频率向负载施加脉冲。 连接到用于调制脉冲宽度的斩波装置的装置响应于表示负载的期望操作的外部导出信号，并且装置响应于负载电流来修改外部导出的信号以维持负载的幅度 电流低于预定水平，由此在负载的预定操作范围内向AC电源提供高功率因数。 还公开了一种操作电子换向马达的方法。
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公开(公告)号：US4449079A
公开(公告)日：1984-05-15
申请号：US412421
申请日：1982-08-27
申请人： David M. Erdman
发明人： David M. Erdman
CPC分类号： H02P6/085 , F25B2600/021
摘要： A circuit for controlling the energization of an electrical load from an AC source. The circuit has a pair of DC lines, and means is provided for rectifying the AC output of the source to apply a DC voltage across the DC lines in the form of a full wave rectified sinusoidal signal. Signal switching means for connection between the DC lines and the load establishes a conductive path therebetween during a variable time interval when the voltage applied by the full wave rectified sinusoidal signal exceeds the voltage across the load, and means including the switching means is provided for chopping the full wave rectified sinusoidal signal to apply pulses to the load during the variable time interval at a frequency which is high with respect to the frequency of the signal. Means connected to the chopping means for modulating the width of the pulses is responsive to an externally derived signal representative of the desired operation of the load, and means is responsive to the load current for modifying the externally derived signal to maintain the amplitude of the load current below a predetermined level whereby a high power factor is presented to the AC source during a predetermined range of operation of the load.A laundering apparatus, a method of operating a laundry machine, a control system for an electronically commutated motor, and a method of operating an electronically commutated motor are also disclosed.
摘要翻译： 用于控制来自AC电源的电负载的通电的电路。 该电路具有一对DC线，并且提供用于整流源的AC输出的装置，以全波整流正弦信号的形式在DC线之间施加DC电压。 用于在直流线路和负载之间连接的信号切换装置在由全波整流的正弦信号施加的电压超过负载两端的电压的可变时间间隔期间建立导电路径，并且包括开关装置的装置被提供用于切断 全波整流正弦信号，在可变时间间隔内以相对于信号频率高的频率向负载施加脉冲。 连接到用于调制脉冲宽度的斩波装置的装置响应于表示负载的期望操作的外部导出信号，并且装置响应于负载电流来修改外部导出的信号以维持负载的幅度 电流低于预定水平，由此在负载的预定操作范围内向AC电源提供高功率因数。 还公开了洗衣设备，操作洗衣机的方法，用于电子换向电动机的控制系统以及操作电子换向电动机的方法。
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17.发明授权Method and apparatus for forming an electric motor having stacked laminations 有权用于形成具有堆叠叠片的电动机的方法和装置公开(公告)号：US06864616B2
公开(公告)日：2005-03-08
申请号：US09974522
申请日：2001-10-09
CPC分类号： H02K11/33 , H02K1/145 , H02K1/2786 , H02K5/225 , H02K7/14 , H02K11/25 , H02K29/08 , H02P6/26
摘要： An electric motor including a stator, a rotor, and a housing adapted to support the stator and the rotor is provided. The stator includes a stator core, a first and second lamination stack, a flux tube extending therethrough, and windings on the stator core. The rotor includes a hub having an inner surface, a magnet coupled to the hub inner surface, and a shaft received in the stator core for rotation of the rotor relative to the stator about the longitudinal axis of the shaft.
摘要翻译： 提供一种包括定子，转子和适于支撑定子和转子的壳体的电动机。 定子包括定子芯，第一和第二层压叠层，延伸穿过其中的焊剂管和定子芯上的绕组。 转子包括具有内表面的毂，耦合到毂内表面的磁体以及容纳在定子芯中的轴，用于使转子相对于定子围绕轴的纵向轴线旋转。
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公开(公告)号：US06531794B1
公开(公告)日：2003-03-11
申请号：US09619956
申请日：2000-07-20
IPC分类号： H02K1503
CPC分类号： H02K15/03 , Y10T29/49009 , Y10T29/49012
摘要： A method for varying motor output using magnets of different fluxes includes manufacturing standardized parts, ascertaining desired motor output, selecting from a group of interchangeable magnets to provide the desired output, and assembling a motor with the selected magnets and standardized parts such that the desired output is provided. Additionally, a motor kit including a rotor configured to accommodate magnets of varying residual induction values and lengths, a stator configured to operate with the rotor, and a plurality of interchangeable magnets with different residual induction values and lengths.
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公开(公告)号：US5982122A
公开(公告)日：1999-11-09
申请号：US761748
申请日：1996-12-05
CPC分类号： H02P6/08
摘要： A capacitively powered motor having a power switching circuit adapted to be connected between a power source and its winding for selectively energizing the winding to generate a magnetic field which causes a rotating assembly to rotate. A position sensing circuit provides a position signal representative of the position of the rotating assembly and a commutating circuit controls the power switching circuit to commutate the power switching circuit at a commutating angle and at a substantially constant duty cycle to achieve a desired rotating speed of the rotating assembly. The commutating circuit varies the commutating angle in response to the position signal to maintain the substantially constant rotating speed of the rotating assembly. As result, the efficiency of the motor is varied to maintain the substantially constant rotating speed.
摘要翻译： 一种具有电力供电的电动机，其具有适于连接在电源和其绕组之间的功率开关电路，用于选择性地激励绕组以产生使得旋转组件旋转的磁场。 位置检测电路提供表示旋转组件的位置的位置信号，并且换向电路控制功率开关电路以整流角度和基本上恒定的占空比对功率开关电路进行换向，以实现所需的转速 旋转组件。 整流电路响应于位置信号改变换向角度，以保持旋转组件的基本上恒定的转速。 结果，马达的效率变化以保持基本恒定的转速。
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20.发明授权
公开(公告)号：US5796194A
公开(公告)日：1998-08-18
申请号：US680010
申请日：1996-07-15
申请人： William R. Archer , Roger C. Becerra , Brian L. Beifus , Mark A. Brattoli , David M. Erdman , Thomas M. Jahns , Gerald B. Kliman , Wen Liang Soong , Charles M. Stephens , Eric R. Benedict , Michael W. Degner
发明人： William R. Archer , Roger C. Becerra , Brian L. Beifus , Mark A. Brattoli , David M. Erdman , Thomas M. Jahns , Gerald B. Kliman , Wen Liang Soong , Charles M. Stephens , Eric R. Benedict , Michael W. Degner
摘要： A single phase permanent magnet motor includes a rotor, a stator, and a quadrature axis winding positioned out-of-phase from a main winding of the stator for generating an output signal representative of rotor angular position. An integrator can be coupled to the quadrature axis winding for phase retarding the output signal, and a comparator can be coupled to the integrator for detecting zero crossings of the phase retarded output signal to provide a commutation signal. The quadrature axis winding can be positioned about ninety electrical degrees out-of-phase from the main winding of the stator, and the integrator can be adapted to phase retard the output signal by a number of degrees which decreases as a speed of the motor increases. At low speeds the phase retard is preferably at about ninety degrees so that the phase retarded signal becomes in-phase with the main stator winding back EMF voltage. The motor may further include a rectifier coupled to the quadrature axis winding for rectifying the output signal, and a lowpass filter for filtering the rectified output signal to provide a signal proportional to velocity. Also the single phase motor is commutated for maximum torque production.
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