公开(公告)号：US6140729A

公开(公告)日：2000-10-31

申请号：US230680

申请日：1999-03-29

申请人： Charles Pollock ,  John David Wale ,  Mike Barnes

发明人： Charles Pollock ,  John David Wale ,  Mike Barnes

IPC分类号： H02K19/06 ,  H02P25/08 ,  H02K17/00

CPC分类号： H02K19/06 ,  H02P25/08

摘要： An electrical machine comprises a four-pole stator 2 provided with a field winding 10 and an armature winding 11, each of the windings 10, 11 being split into two coils 22, 23 or 24, 25 closely coupled and wound so that diametrically opposite portions of both coils are disposed within diametrically opposite stator slots. A two-pole rotor (not shown) without windings is rotatable within the stator 2, and a circuit is provided for energising the armature coils 24 and 25 when direct current is supplied to terminals 26 and 27 of the circuit. Switches 28 and 29 in series with the coils 24 and 25 are switched alternately to effect alternate energisation of the coils 24 and 25 so as to generate, as a result of the opposite winding of the coils, magnetomotive forces in opposite directions. Since each of the closely coupled coil 24 and 25 generates a magnetomotive force in a respective direction, each coil needs to be energised with current in only one direction so that a relatively simple excitation circuit can be used.

摘要翻译： PCT No.PCT / GB97 / 02019 Sec。 371 1999年3月29日第 102（e）1999年3月29日PCT PCT 1997年7月28日PCT公布。 第WO98 / 05112号公报 日期1998年2月5日电机包括设有励磁绕组10和电枢绕组11的四极定子2，每个绕组10,11分成两个紧密耦合和缠绕的线圈22,23或24,25 使得两个线圈的径向相对的部分设置在直径相对的定子槽内。 没有绕组的两极转子（未示出）可在定子2内旋转，并且当向电路的端子26和27提供直流电流时，设置电路用于对电枢线圈24和25通电。 与线圈24和25串联的开关28和29交替地切换以实现线圈24和25的交替激励，以便由于线圈的相反绕组而产生相反方向的磁动势。 由于紧密耦合的线圈24和25中的每一个在相应的方向上产生磁动势，所以每个线圈需要仅在一个方向上被电流激励，使得可以使用相对简单的激励电路。

公开(公告)号：US6037740A

公开(公告)日：2000-03-14

申请号：US981465

申请日：1998-02-23

申请人： Charles Pollock ,  Mike Barnes

发明人： Charles Pollock ,  Mike Barnes

IPC分类号： B60L11/18 ,  H02J7/02 ,  H02P25/08 ,  H02P1/46

CPC分类号： B60L11/1803 ,  B60L11/1801 ,  B60L11/1811 ,  B60L11/1814 ,  B60L11/1816 ,  B60L15/007 ,  H02J7/025 ,  H02P25/08 ,  B60L2200/12 ,  B60L2200/34 ,  B60L2220/18 ,  B60L2220/54 ,  Y02T10/641 ,  Y02T10/644 ,  Y02T10/645 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T10/92 ,  Y02T90/127 ,  Y02T90/14

摘要： A switched reluctance electrical machine system including a switched reluctance machine, a rechargeable DC energy store and principle voltage terminals connectable to an external power source. The switched reluctance machine comprises a rotor, a stator and windings wherein the windings include at least two closely-coupled coils and a power converter for controlling current flow in the windings. The power converter has first and second circuits. The first circuit contains one of the closely-coupled coils and the principle voltage terminals while the second circuit contains the other of the closely-coupled coils and the energy store. A first switching arrangement is connected in series with the coils in the first circuit and a second switching arrangement is connected in series with the coils in the second circuit. An electronic controller controls the switching arrangements so that, in a first operational mode, current flows in one direction in the coils during normal machine operation and, in a second operational mode, current flows in the coils in the opposite direction to charge the energy store from an external power source.

摘要翻译： PCT No.PCT / GB96 / 01597第 371日期1998年2月23日 102（e）1998年2月23日PCT PCT 1996年7月4日PCT公布。 出版物WO97 / 02649 日期1997年1月23日一种开关磁阻电机系统，包括开关磁阻电机，可再充电直流能量存储器和可连接到外部电源的主电压端子。 开关磁阻电机包括转子，定子和绕组，其中绕组包括至少两个紧密耦合的线圈和用于控制绕组中的电流的功率转换器。 电源转换器具有第一和第二电路。 第一电路包含紧密耦合的线圈和主电压端子之一，而第二电路包含紧密耦合的线圈和能量存储器中的另一个。 第一开关装置与第一电路中的线圈串联连接，第二开关装置与第二电路中的线圈串联连接。 电子控制器控制开关装置，使得在第一操作模式中，在正常机器操作期间，电流在线圈中沿一个方向流动，并且在第二操作模式中，电流沿相反方向在线圈中流动以对能量存储器充电 来自外部电源。

公开(公告)号：US09054602B2

公开(公告)日：2015-06-09

申请号：US12965090

申请日：2010-12-10

申请人： Helen Pollock ,  Charles Pollock

发明人： Helen Pollock ,  Charles Pollock

IPC分类号： H02M3/335 ,  H02M7/5383 ,  H02M3/338 ,  H02M7/155 ,  H02M1/00

CPC分类号： H02M7/5383 ,  H02M7/155 ,  H02M2001/0058 ,  H02M2001/0087 ,  Y02B70/1441 ,  Y02B70/1491

摘要： An electronic resonant circuit of very high efficiency which is suitable for driving loads with a known and controlled current. The resonant circuit has input terminals and output terminals with a first reactance Xs, in series with an input terminal, a second reactance XL, in series with an output terminal, and a reactance Xp, connected such that there is a series connection path between the first input terminal through Xs and Xp to the second input terminal and such that there is also a second series connection path between the first output terminal through XL and Xp to the second output terminal the input terminals being driven from a high frequency inverter, the output terminals being connected to a load, the value of the reactances Xs, XL and Xp being chosen such that at least one frequency, the reactances of Xs, XL and Xp are approximately similar in magnitude. The reactance Xs and second reactance XL, are predominantly capacitive over a wide range of the frequency of operation and the reactance Xp, is predominantly inductive over a wide range of the frequency of operation. The circuit according to this invention is particularly suited to driving LED lighting systems, constant torque motors, battery charging and capacitor charging.

摘要翻译： 一种非常高效率的电子谐振电路，适用于驱动具有已知和受控电流的负载。 谐振电路具有输入端子和输出端子，其具有与输入端子串联的第一电抗Xs，与输出端子串联的第二电抗器XL，以及电抗器Xp，其连接成使得在 第一输入端子通过Xs和Xp连接到第二输入端子，并且在第一输出端子通过XL和Xp到第二输出端子之间还存在第二串联连接路径，输入端子由高频逆变器驱动，输出端 端子连接到负载，选择电抗Xs，XL和Xp的值使得至少一个频率，Xs，XL和Xp的电抗在大小上大致相似。 电抗Xs和第二电抗XL在工作频率的宽范围内主要是电容性的，并且电抗Xp主要在操作频率的宽范围内是电感的。 根据本发明的电路特别适用于驱动LED照明系统，恒转矩电动机，电池充电和电容器充电。

公开(公告)号：US08890422B2

公开(公告)日：2014-11-18

申请号：US13510994

申请日：2010-11-22

申请人： Charles Pollock ,  Helen Pollock

发明人： Charles Pollock ,  Helen Pollock

IPC分类号： G05F1/00 ,  H05B37/02 ,  H02M3/156 ,  H05B33/08

CPC分类号： H05B33/0809 ,  H02M3/156 ,  H02M2001/0074 ,  H02M2001/008 ,  Y02B70/1425

摘要： A power supply circuit having at least two conversion stages wherein the first conversion stage includes input terminals for connection to an ac or dc supply, an electronic converter with constant output current characteristics and output terminals for connection to at least one second conversion stages. Each second conversion stage includes input terminals to receive a substantially constant current input from a first conversion stage, current multiplier circuit and output terminals for connection to a load. The electric converter of the first conversion stage is a high frequency resonance converter having a series parallel resonant converter with an inductance connected in series with a capacitor. The output terminals for connection to the second conversion stage are connected across the capacitor and the inductance. Circuits are particularly suitable for lighting applications, for controlling the large number of LEDs in LED display panels or in backlighting for televisions and LCD displays.

摘要翻译： 一种具有至少两个转换级的电源电路，其中第一转换级包括用于连接到交流或直流电源的输入端子，具有恒定输出电流特性的电子转换器和用于连接至少一个第二转换级的输出端子。 每个第二转换级包括用于从第一转换级接收基本上恒定的电流输入的输入端，电流乘法器电路和用于连接到负载的输出端。 第一转换级的电转换器是具有串联并联谐振转换器的高频谐振转换器，其电感与电容器串联。 用于连接到第二转换级的输出端连接在电容器和电感之间。 电路特别适用于照明应用，用于控制LED显示面板中的大量LED或用于电视和LCD显示器的背光。

公开(公告)号：US20100301789A1

公开(公告)日：2010-12-02

申请号：US12744981

申请日：2008-12-01

申请人： Charles Pollock ,  Helen Pollock

发明人： Charles Pollock ,  Helen Pollock

IPC分类号： H02P6/10

CPC分类号： H02P6/10 ,  H02P25/089

摘要： This invention relates to the control of electrical machines and is concerned more particularly, though not exclusively, with the control of flux switching brushless permanent magnet and switched reluctance electrical machines without a mechanical shaft position sensor. Brushless Reluctance and permanent magnet motors can be used in many applications, since they do not require the use of commutators or brushes in supplying electrical power to the rotor of the motor. An electrical machine is provided for converting electrical energy into mechanical energy and/or mechanical energy into electrical energy, the machine comprising a stator and a rotor, the stator having one or more electrical windings wherein at least one electrical parameter of the windings have a cyclic variation related to rotor position; at least one control device for controlling supply of electrical current to or from the or each said electrical winding, and at least one rotor position sensor means for detecting at least one electrical signal related to the cyclic variation of at least one electrical parameter of the or each said electrical winding wherein at least one said rotor position sensor means comprises the steps of measuring the said electrical signal at least once during any part of a switching cycle, conversion of the at least one measured electrical signal to a ratiometric quantity representative of an estimate of the rotor position corresponding to the at least one measured electrical signal and using the said ratiometric quantity in a calculation to maintain the current passing through the or each said electrical winding in synchronism with rotor rotation.

摘要翻译： 本发明涉及电机的控制，更具体地说，尽管不是排他地，通过控制没有机械轴位置传感器的磁通开关无刷永磁体和开关磁阻电机。 无刷磁阻电机和永磁电动机可用于许多应用中，因为它们不需要使用换向器或电刷来向电机的转子供电。 提供一种用于将电能转换成机械能和/或机械能转换为电能的电机，所述机器包括定子和转子，所述定子具有一个或多个电绕组，其中绕组的至少一个电参数具有循环 与转子位置有关的变化; 至少一个用于控制向或从每个所述电绕组供应电流的控制装置，以及至少一个转子位置传感器装置，用于检测与至少一个电参数的至少一个电参数的循环变化相关的至少一个电信号， 每个所述电绕组，其中至少一个所述转子位置传感器装置包括以下步骤：在开关周期的任何部分期间至少测量所述电信号，将所述至少一个测量的电信号转换成代表估计的比例量 的转子位置对应于所述至少一个测量的电信号，并且在计算中使用所述比例量来维持与转子旋转同步地通过所述或每个所述电绕组的电流。

公开(公告)号：US20090218973A1

公开(公告)日：2009-09-03

申请号：US12092159

申请日：2006-11-01

申请人： Charles Pollock ,  Helen Geraldin Phyllis Pollock

发明人： Charles Pollock ,  Helen Geraldin Phyllis Pollock

IPC分类号： H02P6/18

CPC分类号： H02P25/098

摘要： A flux switching electric motor (102) is disclosed. The motor comprises a rotor (104), a stator (106), field windings (124, 126) and armature windings (128, 130). #A microcontroller (134) controls supply of electrical current to the field and armature windings. A rotor position sensor includes a divider for (i) receiving an input signal dependent upon the rate of change of current in at least one field winding, (ii) receiving an input signal dependent upon the voltage across at least one armature winding, current through which causes at least part of the current in the field winding, and (iii) providing the microcontroller (134) with a control signal which is dependent upon the ratio of the input signals received by the divider.

摘要翻译： 公开了磁通切换电动机（102）。 电动机包括转子（104），定子（106），励磁绕组（124,126）和电枢绕组（128,130）。 #A微控制器（134）控制到场和电枢绕组的电流供应。 转子位置传感器包括分配器，用于（i）接收取决于至少一个励磁绕组中的电流变化率的输入信号，（ii）接收取决于至少一个电枢绕组上的电压的输入信号，通过 其导致场绕组中的电流的至少一部分，以及（iii）向微控制器（134）提供取决于由分压器接收的输入信号的比率的控制信号。

公开(公告)号：US06788020B1

公开(公告)日：2004-09-07

申请号：US10048501

申请日：2002-06-25

申请人： Charles Pollock ,  Helen Geraldine Phyllis Pollock

发明人： Charles Pollock ,  Helen Geraldine Phyllis Pollock

IPC分类号： G05B1128

CPC分类号： H02P1/163 ,  H02P1/16 ,  H02P25/08 ,  H02P25/0925

摘要： An electrical machine comprises a rotor without windings, a stator having an armature winding (24,25) and a field winding (10) for generating a magnetomotive force in a direction extending transversely of the magnetomotive force generated by the armature winding. An electric circuit (40) is provided for controlling the current in the armature winding (24, 25) such that periods in which a magnetomotive force in one direction is associated with a first current pulse alternate with periods in which a magnetomotive force in the opposite direction is associated with a second current pulse. A position sensor is provided for monitoring the rotational position of the rotor and for supplying output signals dependent on the speed of rotation of the moor. Furthermore a control system (32) supplies control signals to the circuit (40) to control the current in the armature winding (24, 25), each control signal being produced in response to detection of a respective one of the output signals from the position sensor and being maintained for a length of time determined by the duration of the output signal. Such an arrangement enables control of acceleration, no-load speed and loaded torque-speed characteristics (and braking of the machine) to be achieved with simple on/off control of armature and field switching devices (if present), so that the control circuitry can be produced at relatively low cost. Simplification of the control circuitry is further ensured by the fact that such control can be effected without current sensing.

摘要翻译： 电机包括无绕组的转子，具有电枢绕组（24,25）和励磁绕组（10）的定子，用于沿横向于由电枢绕组产生的磁动势延伸的方向产生磁动势。 提供电路（40），用于控制电枢绕组（24,25）中的电流，使得一个方向上的磁动势与第一电流脉冲相关联的周期与相反的磁动势的周期交替 方向与第二电流脉冲相关联。 提供了一种位置传感器，用于监测转子的旋转位置，并提供取决于停泊转速的输出信号。 此外，控制系统（32）向电路（40）提供控制信号以控制电枢绕组（24,25）中的电流，每个控制信号是响应于来自位置的各个输出信号的检测而产生的 传感器并保持一段时间，由输出信号的持续时间决定。 这样的布置使得能够通过电枢和场开关装置（如果存在）的简单的开/关控制来实现加速度，空载速度和负载转矩 - 速度特性（以及机器的制动）的控制，使得控制电路 可以以相对较低的成本生产。 通过这样的事实可以进一步确保控制电路的简化，即可以在没有电流检测的情况下实现这种控制。

公开(公告)号：US09676086B2

公开(公告)日：2017-06-13

申请号：US14117511

申请日：2012-05-28

申请人： Charles Pollock ,  Helen Pollock

发明人： Charles Pollock ,  Helen Pollock

IPC分类号： B23Q5/00 ,  B25B23/147 ,  B25B21/00 ,  H02K7/14 ,  H02K19/10

CPC分类号： B25B23/147 ,  B25B21/00 ,  H02K7/145 ,  H02K19/103

摘要： A torque tool includes an electrical machine drive system, an electronic controller and a gear system. The drive system includes a rotor and a stator. The rotor includes a pattern of regions of relatively high magnetic permeability interspersed with regions of relatively low magnetic permeability extending generally parallel to the motor shaft such that there is a plurality of magnetic poles distributed circumferentially around the motor shaft. The stator includes electrical windings dispersed in slots disposed around an inner surface of the stator, the slots extending generally parallel to the motor shaft such that, when current flows in the windings, a stator magnetic field generated by the current has the same number of magnetic poles as the rotor. The electronic controller is configured to control the current flow in the stator windings to cause the stator poles to rotate in synchronism with rotation of the motor.

公开(公告)号：US09124193B2

公开(公告)日：2015-09-01

申请号：US13066244

申请日：2011-04-08

申请人： David Thomas Summerland ,  Charles Pollock ,  Helen Pollock

发明人： David Thomas Summerland ,  Charles Pollock ,  Helen Pollock

IPC分类号： H05B41/24 ,  H05B39/00 ,  H02M7/538

CPC分类号： H05B33/0815 ,  H02M7/538 ,  H05B33/0845 ,  Y02B70/1441

摘要： A power adaptor (20) is provided, comprising an input (22) for connection to an AC power supply, and a resonant circuit (34) coupled to the input (22) that provides an output suitable for driving a load (50). The capacitance and inductance of the resonant circuit (34) are selected to provide a pre-determined change in effective voltage, and a corresponding pre-determined change in effective current, between the input (22) and the output (24) of the power adaptor (20).

摘要翻译： 提供电源适配器（20），其包括用于连接到AC电源的输入端（22）和耦合到输入端（22）的谐振电路（34），该谐振电路提供适于驱动负载（50）的输出。 选择谐振电路（34）的电容和电感以提供有效电压的预定变化，以及在功率的输入（22）和输出（24）之间的有效电流的相应预定变化 适配器（20）。

公开(公告)号：US20140084821A1

公开(公告)日：2014-03-27

申请号：US14007321

申请日：2012-03-26

申请人： Charles Pollock ,  Helen Pollock

发明人： Charles Pollock ,  Helen Pollock

IPC分类号： H02P6/20 ,  H02P21/13

CPC分类号： H02P6/205 ,  H02P1/04 ,  H02P6/182 ,  H02P6/21 ,  H02P21/0021 ,  H02P21/13 ,  H02P23/03 ,  H02P23/12

摘要： An observer (404), operating during a time when open loop control (402) is being used to drive a synchronous motor (401), the output of the observer (404) being a signal, E_I_angle, related to the angle between a rotational EMF vector and the current excitation vector, the observer (404) determining the angle by an iterative calculation incorporating a summation term, the summation term summing the variation of the quadrature component of a rotational EMF vector relative to an estimated EMF position vector, and using the angle output of the observer to update the estimate of the rotational EMF position vector. In a further aspect of the invention the observer output signal, E_I_angle, can be used to determine the transition to closed loop control (405), when the observer output signal reaches a value indicating conditions close to pull out conditions.

摘要翻译： 在使用开环控制（402）来驱动同步电动机（401）的时间内操作的观察者（404），观察者（404）的输出是与旋转的角度相关的信号E_I_angle EMF矢量和当前激励矢量，观察者（404）通过包含求和项的迭代计算来确定角度，求和项将旋转EMF矢量的正交分量的变化相对于估计的EMF位置矢量求和，并使用 观察者的角度输出来更新旋转EMF位置矢量的估计。 在本发明的另一方面，当观察者输出信号达到指示接近拉出条件的条件的值时，可以使用观测器输出信号E_I_angle来确定向闭环控制（405）的转变。