专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09590541B2 Method and apparatus for control of electrical machines 有权
标题翻译：电机控制方法及装置
公开(公告)号：US09590541B2
公开(公告)日：2017-03-07
申请号：US14007304
申请日：2012-03-26
申请人： Charles Pollock , Helen Pollock
发明人： Charles Pollock , Helen Pollock
IPC分类号： H02P6/16 , H02P6/14 , H02P21/04 , H02P25/08
CPC分类号： H02P6/153 , H02P6/15 , H02P21/04 , H02P25/024 , H02P25/08 , H02P25/098
摘要： A control system for an electronically commutated motor (401) can rotate smoothly to very low speeds without using a high resolution encoder and can respond to variations in load without excessive speed fluctuations. The control system can be applied to motors operating with low resolution encoders and motors operating with sensorless rotor position feedback. The electronic control system can vary the magnitude and frequency of the stator excitation applied to one or more stator phase windings, the electronic control system comprising a frequency setting section (402) and a magnitude setting section (403) characterized by the fact that the frequency setting section (402) is constrained to operate over a limited range of frequencies, the maximum frequency being a function which is closely related to the frequency associated with rotation of the rotor at the desired speed.
摘要翻译：用于电子换向电动机（401）的控制系统可以平稳地旋转到非常低的速度，而不使用高分辨率编码器，并且可以响应负载变化而没有过大的速度波动。控制系统可应用于使用低分辨率编码器的电机和运行无传感器转子位置反馈的电机。电子控制系统可以改变施加到一个或多个定子相绕组的定子励磁的幅度和频率，该电子控制系统包括频率设定部分（402）和幅度设定部分（403），其特征在于频率设置部分（402）被限制为在有限的频率范围内操作，最大频率是与以所需速度的转子旋转相关联的频率密切相关的函数。

2. 发明申请

US20140062267A1 Design Improvements for Flux Switching Machines 有权
标题翻译：磁通切换机的设计改进
公开(公告)号：US20140062267A1
公开(公告)日：2014-03-06
申请号：US14007322
申请日：2012-03-26
申请人： Charles Pollock , Helen Pollock
发明人： Charles Pollock , Helen Pollock
IPC分类号： H02K1/22
CPC分类号： H02K1/22 , H02K19/06 , H02P6/26 , H02P25/08
摘要： Disclosed herein is a design for flux switching machines with one or more armature windings which can deliver controlled torque, in either selected direction on start up, without the use of a mechanical position sensor. Flux switching machines without sensors can operate equally well in either direction. The invention discloses design features for such machines which improves the torque profile of the motor with angle. In three phase machines this delivers higher torque and lower ripple torque. In single phase flux switching machines the invention allows the rotor to be placed in a position where maximum torque can be delivered in either direction by selection of either positive or negative armature current. Rotor slotting is introduced to create a path of low permeability across a rotor tooth with minimal impact on the normal torque producing flux paths. Asymmetry of stator slots is used to further create a stable rotor position when energised by predominantly field means or armature means. Starting of the rotor from this stable position can be achieved in either direction. The method is suitable for starting permanent magnet flux switching motors. The invention results in low cost single phase motors which can start and run in either direction and three phase flux switching motors with improved performance over the prior art.
摘要翻译：本文公开了一种具有一个或多个电枢绕组的磁通切换机的设计，该电枢绕组可以在启动时在选择的方向上输送受控的转矩，而不使用机械位置传感器。没有传感器的焊剂切换机可以在任一方向上同等工作。本发明公开了这样的机器的设计特征，其改进了电动机的角度的扭矩分布。在三相机器中，这提供更高的扭矩和更低的纹波扭矩。在单相磁通切换机中，本发明允许转子被放置在可以通过选择正或负电枢电流在任一方向上输送最大转矩的位置。引入转子开槽以在转子齿上产生低磁导率的路径，同时对产生通常路径的正常转矩影响最小。定位槽的不对称用于在主要由现场装置或电枢装置通电时进一步产生稳定的转子位置。从该稳定位置开始转子可以在任一方向上实现。该方法适用于起动永久磁通开关电机。本发明导致了低成本单相电动机，其可以在任一方向上启动和运行，并且三相磁通开关电动机具有比现有技术更好的性能。

3. 发明申请

US20060197396A1 Control of an electrical reluctance machine 有权
标题翻译：电磁阻电机的控制
公开(公告)号：US20060197396A1
公开(公告)日：2006-09-07
申请号：US10526986
申请日：2003-09-12
申请人： Charles Pollock , Helen Pollock
发明人： Charles Pollock , Helen Pollock
IPC分类号： H02P7/00
CPC分类号： H02P6/182 , H02P1/163
摘要： An electrical machine having stator (30) and rotor (31) is disclosed. The motor has field windings (F) and armature windings (A) energized by a suitable power electronic controller (401). A controller (400) sends signals to the power electronic controller (401) to control the armature current to control operation of the machine. When the machine is operating as a motor, the armature windings (A) will be supplied with electrical current from the power electronic controller by the application of applied voltage in synchronism with the rotation of the rotor (31). A mutually induced first electrical signal dependent on rotational position of the rotor will be induced within the field windings (F). This will create a superimposed gradient in the field current delivered by the power electronic controller (401). The mutually induced first electrical signal can be extracted from the field current by block (402) which may be a differentiator circuit or may be a coil coupled to the magnetic field around the field current conductor. A signal conditioning circuit (403) is provided which may contain a filter circuit. Block (404) creates a reference voltage for the comparator (405). The reference voltage can be zero such that the comparator (405) determines the polarity of the mutually induced first electrical signal. The output from the comparator is a digital signal indicating if the mutually induced first electrical signal is less than or greater than the threshold applied by block (404). This comparator output, a second electrical signal, represents the rotational position of the rotor relative to the stator and is supplied to the controller (400) to maintain synchronism between the armature excitation and the rotor position.
摘要翻译：公开了一种具有定子（30）和转子（31）的电机。电动机具有由合适的电力电子控制器（401）激励的励磁绕组（F）和电枢绕组（A）。控制器（400）向电力电子控制器（401）发送信号以控制电枢电流以控制机器的操作。当机器作为电动机工作时，电枢绕组（A）将通过与转子（31）的旋转同步地施加施加的电压从电力电子控制器提供电流。在励磁绕组（F）内将引起取决于转子旋转位置的相互诱导的第一电信号。这将在由电力电子控制器（401）传送的励磁电流中产生叠加的梯度。相互诱导的第一电信号可以通过块（402）从场电流提取，块（402）可以是微分电路，或者可以是耦合到励磁电流导体周围的磁场的线圈。提供信号调节电路（403），其可以包含滤波电路。块（404）创建比较器（405）的参考电压。参考电压可以为零，使得比较器（405）确定互相感应的第一电信号的极性。来自比较器的输出是指示相互感应的第一电信号是否小于或大于由块（404）应用的阈值的数字信号。该比较器输出第二电信号表示转子相对于定子的旋转位置，并被提供给控制器（400）以保持电枢励磁和转子位置之间的同步。

4. 发明授权

US09054602B2 Resonant circuit with constant current characteristics 有权
标题翻译：具有恒定电流特性的谐振电路
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。

5. 发明授权

US08890422B2 LED power supply 有权
标题翻译： LED电源
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。

6. 发明申请

US20100301789A1 CONTROL OF ELECTRICAL MACHINES 有权
标题翻译：电机控制
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。

7. 发明授权

US08970146B2 Controller for electrical machines 有权
标题翻译：电机控制器
公开(公告)号：US08970146B2
公开(公告)日：2015-03-03
申请号：US13129427
申请日：2009-11-17
申请人： Charles Pollock , Helen Pollock
发明人： Charles Pollock , Helen Pollock
IPC分类号： H02P21/00 , H02P6/18 , H02P21/14
CPC分类号： H02P6/18 , H02P21/18 , H02P21/24
摘要： The present invention relates to control of synchronous machines. A sensorless control system for an electrical machine is provided comprising a rotor and a stator having one or more phase windings for generating a rotating stator magnetic field. The current in the phase windings is monitored to determine real and imaginary components of the current vector in a rotating reference frame, from which real and imaginary components of the emf vector rotating in the rotating reference frame can also be determined. The ratio of the real and imaginary emf components is calculated, and an angular position of the rotational emf vector is estimated from this ratio. An angular error signal indicative of the deviation of the estimated angular position from a desired position in line with the real axis of the rotating reference frame is determined, and the machine is controlled such that the error signal tends towards zero.
摘要翻译：本发明涉及同步电机的控制。提供了一种用于电机的无传感器控制系统，其包括具有一个或多个相绕组的转子和定子，用于产生旋转的定子磁场。监测相绕组中的电流，以确定旋转参考系中的电流矢量的实部和虚部，也可以从旋转参考系中确定在旋转参考系中旋转的电动势矢量的实部和虚部。计算实际和虚拟的电动势分量的比率，并且根据该比率来估计旋转电动势矢量的角位置。确定指示估计的角位置与与旋转参考系的实际轴线一致的期望位置的偏差的角度误差信号，并且控制机器使得误差信号趋于零。

8. 发明授权

US08766571B2 Method and apparatus for controlling an electrical machine 有权
标题翻译：用于控制电机的方法和装置
公开(公告)号：US08766571B2
公开(公告)日：2014-07-01
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： H02P21/00
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。

9. 发明授权

US08471510B2 Control of electrical machines 有权
标题翻译：电机控制
公开(公告)号：US08471510B2
公开(公告)日：2013-06-25
申请号：US12744984
申请日：2008-12-01
申请人： Charles Pollock , Helen Pollock
发明人： Charles Pollock , Helen Pollock
IPC分类号： H02P6/16
CPC分类号： H02P6/16 , H02P6/10 , H02P25/089
摘要： An electrical machine for converting electrical energy into mechanical energy and/or mechanical energy into electrical energy, including at least one rotor position sensor device configured to undertake the steps of measuring an electrical signal during a switching cycle in an end region, and comparing the measurement with at least one similar measurement in at least one previous switching cycle to determine if a known rotor position has been reached.
摘要翻译：一种用于将电能转换成机械能和/或机械能转换成电能的电机，包括至少一个转子位置传感器装置，该至少一个转子位置传感器装置被配置为执行在终端区域的开关周期期间测量电信号的步骤，在至少一个先前的切换循环中至少进行一次类似的测量，以确定是否已经达到已知的转子位置。

10. 发明授权

US08242711B2 Lighting systems 有权
标题翻译：照明系统
公开(公告)号：US08242711B2
公开(公告)日：2012-08-14
申请号：US12450568
申请日：2008-03-31
申请人： David Thomas Summerland , Charles Pollock , Helen Pollock
发明人： David Thomas Summerland , Charles Pollock , Helen Pollock
IPC分类号： G05F1/00 , H05B37/02
CPC分类号： H05B33/0845
摘要： A power adaptor (20) for a lighting unit (50) having a solid state light source (50a,50b,50c) is disclosed. The power adaptor (20) comprises an input (22) for connection to a mains power supply, a power transfer module (40a,40b,40c,140a) that is coupled to the input (22) and provides an output suitable for driving the solid state light source (50a,50b,50c), and a controller (30) that receives a voltage signal from the input (22) and is able to deliver a control signal to the power transfer module (40a,40b,40c,140a) for reducing the power drawn from the input (22). The power adaptor (20) draws current from the input (22) as a function of the voltage at the input (22) in order that the power adaptor (20) appears as a variable resistor to the mains supply.
摘要翻译：公开了一种用于具有固态光源（50a，50b，50c）的照明单元（50）的电源适配器（20）。电源适配器（20）包括用于连接到市电电源的输入端（22），耦合到输入端（22）并提供适于驱动电源的输出的输出模块（40a，40b，40c，140a）固体光源（50a，50b，50c）和控制器（30），其从所述输入端（22）接收电压信号，并且能够将控制信号传送到所述电力传递模块（40a，40b，40c，140a ），用于减少从输入（22）吸取的功率。电源适配器（20）根据输入端（22）处的电压来从输入端（22）吸取电流，以使电源适配器（20）作为电源的可变电阻器出现。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式