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公开(公告)号：US07608965B2
公开(公告)日：2009-10-27
申请号：US11218316
申请日：2005-09-01
申请人： Metin Aydin , Thomas A. Lipo , Surong Huang
发明人： Metin Aydin , Thomas A. Lipo , Surong Huang
IPC分类号： H02K21/12
CPC分类号： H02K21/24 , H02K1/2793
摘要： An electrical machine is provided. The machine includes at least one rotor mounted for rotation about a central axis and at least two stator sections mounted axially adjacent to and on opposite sides of the rotor. The rotor includes two circumferentially arrayed rows of alternating segments of permanent magnet and ferromagnetic pole pieces. One of the rows is spaced radially inwardly from the other row. The permanent magnet and ferromagnetic pole pieces are separated by a non-ferromagnetic material. The pole pieces are arranged so that the permanent magnet segments in the first row are radially adjacent to ferromagnetic segments in the second row so that the N-S magnetic fields of the permanent magnet segments are aligned axially. Each stator section includes a ferromagnetic stator frame, at least a first AC winding wound in circumferential slots in the stator frame, and a DC field winding wound on the stator frame.
摘要翻译： 提供电机。 该机器包括至少一个转子，其安装成围绕中心轴线旋转，并且至少两个定子部分轴向安装在转子的相对两侧。 转子包括两个周向排列的永磁体和铁磁极片的交替段的行。 其中一排从另一排径向向内隔开。 永磁体和铁磁极片由非铁磁材料分开。 极片被布置成使得第一行中的永磁体段在第二排中与铁磁段径向相邻，使得永磁体段的N-S磁场轴向对准。 每个定子部分包括铁磁定子框架，至少缠绕在定子框架中的圆周槽中的第一交流绕组和缠绕在定子框架上的DC场绕组。
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公开(公告)号：US06924574B2
公开(公告)日：2005-08-02
申请号：US10449338
申请日：2003-05-30
申请人： Ronghai Qu , Thomas A. Lipo
发明人： Ronghai Qu , Thomas A. Lipo
摘要： The present invention provides a novel dual-rotor, radial-flux, toroidally-wound, permanent-magnet machine. The present invention improves electrical machine torque density and efficiency. At least one concentric surface-mounted permanent magnet dual-rotor is located inside and outside of a torus-shaped stator with back-to-back windings, respectively. The machine substantially improves machine efficiency by reducing the end windings and boosts the torque density by at least doubling the air gap and optimizing the machine aspect ratio.
摘要翻译： 本发明提供了一种新颖的双转子，径向通量环形缠绕永磁机。 本发明提高了电机转矩密度和效率。 至少一个同心表面安装的永磁体双转子分别位于具有背对背绕组的环形定子的内部和外部。 该机器通过减少端部绕组并通过至少使空气间隙加倍并优化机器纵横比来提高转矩密度，从而显着提高机器效率。
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公开(公告)号：US06570778B2
公开(公告)日：2003-05-27
申请号：US09943417
申请日：2001-08-30
申请人： Thomas A. Lipo , Miroslav Chomat
发明人： Thomas A. Lipo , Miroslav Chomat
IPC分类号： H02M112
CPC分类号： H02P1/44 , H02P27/048
摘要： An adjustable speed drive for single-phase induction motors has a low-cost structure including a rectifier and a two-switch inverter. During full-speed operation, power is supplied directly from the AC power system to the main winding of the motor and from the inverter at line frequency but phase-shifted from the line voltage to an auxiliary winding of the motor to develop start up torque for the motor. In one or more lower speed operating modes, power is supplied from the inverter at a lower frequency directly to the main winding and through a phase-shifting capacitor to the auxiliary winding of the motor. Low cost switching devices may be used in the inverter since they are not required to switch the full-speed power of the motor.
摘要翻译： 用于单相感应电动机的可调速驱动器具有包括整流器和双开关逆变器的低成本结构。 在全速运行中，电源直接从交流电源系统直接供电到电机的主绕组，从变频器以线路频率供电，但是从线路电压相移到电机的辅助绕组，以产生启动转矩 电机。 在一个或多个低速工作模式中，从低频的逆变器直接向主绕组供电，并通过一个移相电容器向电动机的辅助绕组供电。 低成本开关器件可用于逆变器，因为它们不需要切换电机的全速电源。
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公开(公告)号：US6031738A
公开(公告)日：2000-02-29
申请号：US98118
申请日：1998-06-16
申请人： Thomas A. Lipo , Gautam Sinha
发明人： Thomas A. Lipo , Gautam Sinha
CPC分类号： H02M7/487 , H02M7/5395 , H02P27/14
摘要： A multilevel inverter system having four or more levels of output voltage on each inverter output line. The voltage across each of three or more series connected DC bus capacitors is provided to an inverter which is formed to have redundant switching states, such as a plurality of controlled switching devices and diodes connected in a diode-clamped multilevel inverter configuration. The switching of the switching devices is controlled to provide a selected output voltage waveform utilizing redundant switching states, when such states are available on each voltage transition, by selecting a one of the available switching states that serves to provide the desired phase-to-phase voltages and to tend to equalize the voltages across the DC bus capacitors. Active or passive rectifiers may be used to provide the DC voltage across the DC bus lines and across the DC bus capacitors. Separate rectifiers may be provided for each capacitor which are supplied from secondaries of transformers connected to the three phase input lines to provide isolation and voltage level adjustment. The multilevel inverter system provides output voltage waveforms with lower total harmonic distortion that conventional two or three level inverters, while maintaining voltage balance across the several DC bus capacitors.
摘要翻译： 在每个逆变器输出线上具有四级或更多级输出电压的多电平逆变器系统。 三个以上串联连接的直流总线电容器中的每一个上的电压被提供给形成为具有冗余的开关状态的逆变器，例如以二极管钳位的多电平逆变器配置连接的多个受控开关器件和二极管。 控制开关器件的切换，以便通过选择一种可用的开关状态来利用冗余的开关状态来提供选择的输出电压波形，当这种状态在每个电压转换时可用时，这些状态用于提供期望的相间 并且趋向于均衡DC总线电容器两端的电压。 有源或无源整流器可以用于在DC总线和跨总线电容器两端提供直流电压。 可以为从连接到三相输入线的变压器的二次侧提供的每个电容器提供单独的整流器，以提供隔离和电压电平调节。 多电平逆变器系统提供输出电压波形，传统的两级或三级逆变器具有较低的总谐波失真，同时保持多个直流总线电容器之间的电压平衡。
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公开(公告)号：US5459385A
公开(公告)日：1995-10-17
申请号：US173766
申请日：1993-12-27
申请人： Thomas A. Lipo , Feng Liang
发明人： Thomas A. Lipo , Feng Liang
CPC分类号： H02K41/02 , H02K3/28 , H02P25/089
摘要： A variable reluctance drive system including a motor and corresponding converter for improved current commutation is described. The motor incorporates a salient pole rotor and a salient pole stator having one or more full pitch windings which operate by mutual inductance to transfer the current from the active short pitch winding following phase alignment. This increases output torque and/or speed and permits a number of simple and economical converter circuits.
摘要翻译： 描述了一种可变磁阻驱动系统，其包括用于改善电流换向的电机和相应的转换器。 电动机包含凸极转子和具有一个或多个全节距绕组的凸极定子，其通过互感工作，以便在相位对准之后从有源短节距绕组传送电流。 这增加了输出转矩和/或速度，并且允许许多简单而经济的转换器电路。
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公开(公告)号：US5376851A
公开(公告)日：1994-12-27
申请号：US884162
申请日：1992-05-18
申请人： Thomas A. Lipo , Feng Liang
发明人： Thomas A. Lipo , Feng Liang
CPC分类号： H02K41/02 , H02K3/28 , H02P25/089
摘要： A variable reluctance drive system including a motor and corresponding converter for improved current commutation is described. The motor incorporates a salient pole rotor and a salient pole stator having one or more full pitch windings which operate by mutual inductance to transfer the current from the active short pitch winding following phase alignment. This increases output torque and/or speed and permits a number of simple and economical converter circuits.
摘要翻译： 描述了一种可变磁阻驱动系统，其包括用于改善电流换向的电机和相应的转换器。 电动机包含凸极转子和具有一个或多个全节距绕组的凸极定子，其通过互感工作，以便在相位对准之后从有源短节距绕组传送电流。 这增加了输出转矩和/或速度，并且允许许多简单而经济的转换器电路。
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公开(公告)号：US5334923A
公开(公告)日：1994-08-02
申请号：US858172
申请日：1992-03-27
CPC分类号： H02P21/141 , H02P21/18 , H02P6/187
摘要： A method and apparatus for controlling torque by correcting slip gain error in an operating induction motor is provided. This is accomplished by measuring the amplitude and position of a flux in the motor such as rotor flux. Rotor flux position and amplitude can be estimated from the air gap flux. The slip gain can then be corrected in a single step or a few steps to provide a deadbeat control.
摘要翻译： 提供了一种通过校正操作感应电动机中的滑移增益误差来控制转矩的方法和装置。 这是通过测量电机中的磁通量的幅度和位置来实现的，例如转子磁通。 转子通量位置和振幅可以从气隙通量估计。 然后可以在单个步骤或几个步骤中校正滑移增益以提供无节拍控制。
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28.发明授权
公开(公告)号：US4724373A
公开(公告)日：1988-02-09
申请号：US15506
申请日：1987-02-09
申请人： Thomas A. Lipo
发明人： Thomas A. Lipo
CPC分类号： H02P21/00 , H02P21/141 , H02P21/20 , H02P2207/01
摘要： To determine the flux in the air gap of an electrical machine having distributed stator windings, the voltages across two coils of a phase belt in certain phases of the stator are measured and the voltage across one coil in each phase belt is subtracted from the voltage in the other coil. The voltage differences are integrated to provide a measure of the air gap flux. Measurement of the entire air gap flux about the machine can be obtained utilizing two coils in a phase belt per phase of the machine. The instantaneous electromagnetic torque in the machine can be calculated directly as a function of the calculated air gap flux and of the currents in the stator windings. Such flux and torque measurements are obtained utilizing electrical connections to the existing coils of the machine, without the need to modify the machine by adding further windings or sensors. The flux and torque signals so obtained may be utilized in motor controllers, and are particularly useful for control of AC induction motors.
摘要翻译： 为了确定具有分布式定子绕组的电机的气隙中的通量，测量定子的某些相位中的相带的两个线圈之间的电压，并且将每个相带中的一个线圈上的电压从 另一个线圈。 电压差被积分以提供气隙通量的量度。 可以利用机器每相的相带中的两个线圈来获得机器周围的整个气隙通量的测量。 可以直接计算机器中的瞬时电磁转矩，作为计算出的气隙磁通和定子绕组中的电流的函数。 通过与机器的现有线圈的电连接获得这种磁通和扭矩测量，而不需要通过添加更多的绕组或传感器来修改机器。 如此获得的通量和扭矩信号可用于电动机控制器，并且对于AC感应电动机的控制特别有用。
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公开(公告)号：US4573003A
公开(公告)日：1986-02-25
申请号：US753820
申请日：1985-07-09
申请人： Thomas A. Lipo
发明人： Thomas A. Lipo
CPC分类号： H02K39/00 , H02K19/12 , H02K19/26 , H02P25/024 , H02P29/50
摘要： An electrical machine is disclosed, capable of functioning as either a motor or generator, which has a salient pole rotor (23) and a stator having multiple phase windings (21) each comprising a concentrated, full pitch winding with one stator slot per pole per phase. The pole faces (27) of the salient poles of the rotor may be tapered to produce an air gap which increases from the front to the back of the pole face to counter the effect of armature reaction MMF. The taper of the pole faces is selected such that the resultant total flux density in the air gap from field and armature currents is quasi-rectangular. The quasi-rectangular flux densities rotating in the air gap produce quasi-rectangular phase voltages and currents when the machine is operated as a generator, and, when operated as a motor, the machine is adapted to accept quasi-rectangular supply currents or voltages of the type readily produced by variable frequency converter power supplies.
摘要翻译： 公开了一种电机，其能够用作电动机或发电机，其具有凸极转子（23）和具有多个相绕组（21）的定子，每个相绕组包括集中的全节距绕组，每极一个定子槽 相。 转子的凸极的极面（27）可以是锥形的，以产生从极面的前部到后面增加的气隙，以抵消电枢反应MMF的影响。 选择极面的锥度，使得从场和电枢电流得到的气隙中的总磁通密度为准矩形。 当机器作为发电机运行时，在气隙中旋转的准矩形通量密度产生准矩形相电压和电流，并且当作为电动机操作时，机器适于接受准矩形电源电流或 这种类型容易由变频电源产生。
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公开(公告)号：US4019105A
公开(公告)日：1977-04-19
申请号：US617187
申请日：1975-09-26
申请人： Edward P. Cornell , Thomas A. Lipo
发明人： Edward P. Cornell , Thomas A. Lipo
摘要： Improved stable four-quadrant operation of an induction motor supplied with variable amplitude and frequency stator line current by a motor controller with a constant current source converter is achieved by using several feedback control loops to control the slip frequency as well as the stator line current amplitude and frequency. Speed feedback is employed with optional control of rotor speed. Motor performance is optimized by indirectly regulating air gap flux to its rated value by controlling slip frequency as a function of sensed stator current. Thus, torque is approximately linear with stator current.
摘要翻译： 通过使用恒流源转换器的电动机控制器改进了提供可变振幅和频率定子线电流的感应电动机的稳定四象限运行，通过使用多个反馈控制回路来控制转差频率以及定子线电流幅度 和频率。 采用速度反馈可选择控制转子速度。 通过将滑差频率控制为感测到的定子电流的函数，通过间接调节气隙通量达到额定值来优化电机性能。 因此，转矩与定子电流近似线性关系。
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