公开(公告)号：US20200373871A1

公开(公告)日：2020-11-26

申请号：US16871020

申请日：2020-05-10

申请人： Thomas A. Lipo ,  Akihiro Imakiire

发明人： Thomas A. Lipo ,  Akihiro Imakiire

IPC分类号： H02P29/024 ,  H02K15/16 ,  G01R31/34 ,  H02P1/26

摘要： An induction machine with localized voltage unbalance compensation is disclosed. The use of an induction machine with a voltage unbalance correction compensator (VUC) may be used to maintain proper working conditions of the machine during intervals of voltage unbalance.

公开(公告)号：US20190296629A1

公开(公告)日：2019-09-26

申请号：US16361595

申请日：2019-03-22

申请人： Thomas A. Lipo

发明人： Thomas A. Lipo

IPC分类号： H02K55/04 ,  H01F6/06 ,  H02K9/19

摘要： Various embodiments are directed to a high temperature superconducting (HTS) synchronous machine having a rotating armature and methods for fabricating the same. The HTS synchronous machines described herein solve the rotating seal system complications which plague conventional HTS synchronous machines by eliminating entirely the need for any such system. Instead, it is proposed here to rotate the AC armature windings, which are stationary (i.e., normally the “stator”) in conventional HTS synchronous machines, while allowing the superconducting field windings to remain stationary.

公开(公告)号：US08648562B2

公开(公告)日：2014-02-11

申请号：US12852786

申请日：2010-08-09

申请人： Thomas A. Lipo

发明人： Thomas A. Lipo

IPC分类号： H02P27/00

CPC分类号： H02P21/0089

摘要： An apparatus for improving machine drive performance. The apparatus includes a controller configured to control an impedance of a converter. The converter is configured to be electrically coupled to a plurality of first ends of a plurality of windings of a machine. A plurality of second ends of the plurality of windings of the machine are configured to be electrically coupled to a power source.

摘要翻译： 一种用于提高机器驱动性能的设备。 该装置包括被配置为控制转换器的阻抗的控制器。 转换器被配置为电耦合到机器的多个绕组的多个第一端。 机器的多个绕组中的多个第二端被配置为电耦合到电源。

公开(公告)号：US06242884B1

公开(公告)日：2001-06-05

申请号：US09274164

申请日：1999-03-22

申请人： Thomas A. Lipo ,  Alfredo Rodolfo Muñoz-Garcia

发明人： Thomas A. Lipo ,  Alfredo Rodolfo Muñoz-Garcia

IPC分类号： H02P528

CPC分类号： H02K16/04 ,  H02K17/12 ,  H02P1/34 ,  H02P3/18 ,  H02P21/34 ,  H02P21/36 ,  H02P2207/073 ,  H02P2207/076

摘要： A dual stator winding induction machine has two windings with input terminals which are supplied separately with drive power. The two stator windings have a different number of poles to essentially eliminate the magnetic coupling between the two windings and to decouple the torques produced by each set of windings. Power is supplied to the two windings by two separate variable frequency inverter drives to provide two independently controllably torque components. At low speed, the power supplied to one of the windings can produce torque which opposes the torque from the power applied to the other winding, so that very low speed and standstill operation can be achieved while the frequency of the power supplied by the inverters is always greater than the minimum frequency. At higher operating speeds, power is supplied to the two windings so that the torque from the windings adds. The dual stator machine can be built with minimal modifications to standard winding configurations.

摘要翻译： 双定子绕组感应电机具有两个带有输入端子的绕组，输入端子单独提供驱动电源。 两个定子绕组具有不同数量的极点，以基本上消除两个绕组之间的磁耦合，并且去耦合每组绕组产生的转矩。 通过两个单独的变频驱动器向两个绕组供电，以提供两个可独立控制的扭矩组件。 在低速时，提供给一个绕组的电力可以产生与施加到另一个绕组的功率的扭矩相反的扭矩，从而可以实现非常低的速度和停止操作，而逆变器提供的功率的频率为 始终大于最小频率。 在较高的运行速度下，向两个绕组供电，这样绕组的转矩就会增加。 双定子电机可以对标准绕组配置进行最小的修改。

公开(公告)号：US5949664A

公开(公告)日：1999-09-07

申请号：US99635

申请日：1998-06-18

申请人： Steffen Bernet ,  Thomas A. Lipo ,  Braz de J. Cardoso Filho

发明人： Steffen Bernet ,  Thomas A. Lipo ,  Braz de J. Cardoso Filho

IPC分类号： H02M1/34 ,  H02M7/521 ,  H02M5/45

CPC分类号： H02M1/34 ,  H02M7/521 ,  H02M2001/342 ,  Y02B70/1491

摘要： A current stiff power conversion system, such as a rectifier, inverter, or AC-to-AC converter is provided wherein power converter switching devices in the power conversion system may be switched at or near zero voltage conditions to minimize or eliminate switching losses and increase switching frequencies. Zero voltage switching conditions are achieved by providing a snubber capacitor across each switching device in the power conversion system, and connecting an active commutation unit, including an inductor and an active commutation unit switching device connected in series across DC bus lines in parallel with the bridge of power conversion switching devices. Zero voltage switching conditions for the power conversion switching devices are achieved by controlling the power conversion switching devices and the active commutation unit to establish a resonance between the snubber capacitors and the active commutation unit to drive the voltage across incoming switching devices in the power conversion system to at or near zero. Zero current switching of the active commutation unit switching device, and reduced switching device stress in the power conversion system, is achieved by controlling the power conversion switching devices to establish zero current switching conditions and a desired snubber driving voltage for the active commutation unit before the active commutation unit is turned on to establish the resonance condition. Since zero voltage switching conditions for the power conversion switching devices is achieved each switching cycle, the power conversion system may be controlled using a PWM control scheme.

摘要翻译： 提供了目前的硬功率转换系统，例如整流器，逆变器或AC到AC转换器，其中功率转换系统中的功率转换器开关器件可以在零电压条件下接近或接近，以最小化或消除开关损耗并增加 开关频率。 零电压开关条件通过在功率转换系统中的每个开关器件上提供缓冲电容器来实现，并且连接有源换向单元，包括电感器和有源换向单元开关器件串联连接在与DC桥并联的DC总线上 的电源转换开关器件。 用于功率转换开关器件的零电压开关条件通过控制功率转换开关器件和有源换向单元在缓冲电容器和有源换向单元之间建立谐振来驱动电力转换系统中的输入开关器件之间的电压来实现 到或接近零。 有源换向单元开关器件的零电流切换以及功率转换系统中的开关器件应力降低，是通过控制功率转换开关器件来建立零电流开关条件和为有源换向单元所需的缓冲驱动电压而实现的 开启有源换向单元以建立共振条件。 由于每个开关周期都实现了功率转换开关器件的零电压开关条件，所以可以使用PWM控制方案来控制功率转换系统。

公开(公告)号：US5870292A

公开(公告)日：1999-02-09

申请号：US719846

申请日：1996-09-30

申请人： Thomas A. Lipo ,  Sun-Soon Park

发明人： Thomas A. Lipo ,  Sun-Soon Park

IPC分类号： H02M7/48 ,  H02P25/08 ,  H02M5/45

CPC分类号： H02M7/4826 ,  H02P25/092 ,  Y02P80/112

摘要： A resonant DC link converter which is specifically adapted for driving a switched reluctance motor (SRM) using low power (VA) rated switches, includes an input circuit providing a DC supply voltage, a resonating inductance (connected to the switched input circuit) for generating a resonating DC link current, and an output converter circuit synthesizing a multi-phase AC output signal to power a respective phase winding of the SRM. A controller switches the switch devices of the input circuit and output converter circuits in a predetermined sequence.

摘要翻译： 特别适用于使用低功率（VA）额定开关驱动开关磁阻电动机（SRM）的谐振DC链路转换器包括提供DC电源电压的输入电路，连接到开关式输入电路的谐振电感（用于产生 谐振DC链路电流，以及合成多相AC输出信号以对SRM的相应相绕组供电的输出转换器电路。 控制器以预定顺序切换输入电路和输出转换器电路的开关装置。

公开(公告)号：US5852558A

公开(公告)日：1998-12-22

申请号：US880096

申请日：1997-06-20

申请人： Alexander L. Julian ,  Thomas A. Lipo ,  Deepakraj M. Divan

发明人： Alexander L. Julian ,  Thomas A. Lipo ,  Deepakraj M. Divan

IPC分类号： H02M1/12 ,  H02M7/5387

CPC分类号： H02M1/12 ,  H02M7/5387

摘要： Multi-phase power is provided to a load via the use of an inverter which has an even number of inverter legs. DC source voltage, such as from an AC-to-DC converter receiving power from a main AC power supply or from an independent DC power source such as a battery, is provided to the inverter. The DC source voltage is provided on DC bus lines of the inverter so as to be symmetric about ground. Switching devices in the inverter legs are controlled using a modulation strategy to synthesize desired output voltage waveforms on the inverter leg outputs from the voltage on the DC bus lines. The modulation strategy is subject to a modulation constraint such that, at any one time, half of the inverter legs provide a positive output voltage signal with respect to ground, and the other half of the inverter legs provide a negative output voltage signal, of equal magnitude, with respect to ground. If the multi-phase load to which the inverter is connected is a balanced impedance, the present invention makes possible the reduction or elimination of common mode voltage and, therefore, common mode current. Load balancing may be achieved using a multi-phase second order filter connected between the inverter leg outputs and the load. The present invention may be applied to power conversion systems including hard switching or soft switching inverters, and may be used in combination with conventional inverter modulation strategies.

摘要翻译： 通过使用具有偶数个逆变器支路的逆变器向负载提供多相电源。 直流源电压，例如从接收来自主交流电源的电力或从电池等独立的直流电源接收电力的交流 - 直流变换器被提供给逆变器。 在逆变器的直流母线上设置直流电源电压，使其对地对称。 使用调制策略来控制逆变器支路中的开关器件，以从DC总线上的电压合成反相器支脚输出端的期望输出电压波形。 调制策略受到调制约束，使得在任何一个时间，一半的反相器支路提供相对于地的正输出电压信号，而另一半的反相器支路提供相等的负输出电压信号 相对于地面。 如果逆变器连接的多相负载是平衡阻抗，则本发明可以降低或消除共模电压，从而降低共模电流。 可以使用连接在逆变器支脚输出和负载之间的多相二阶滤波器来实现负载平衡。 本发明可以应用于包括硬开关或软开关逆变器的功率转换系统，并且可以与传统的逆变器调制策略结合使用。

公开(公告)号：US5825112A

公开(公告)日：1998-10-20

申请号：US926765

申请日：1992-08-06

申请人： Thomas A. Lipo ,  Yuefeng Liao ,  Feng Liang

发明人： Thomas A. Lipo ,  Yuefeng Liao ,  Feng Liang

IPC分类号： H02K19/10 ,  H02K19/24 ,  H02K21/38 ,  H02K29/00 ,  H02K1/00 ,  H02K1/12 ,  H02K1/14

CPC分类号： H02K19/103 ,  H02K19/24 ,  H02K21/44 ,  H02K29/03

摘要： A new class of doubly-salient motors which incorporate a specific stator/rotor pole arrangement and stationary permanent magnets mounted in the stator to provide a linearly increasing flux linkage over the entire area of pole overlap. The new motors provide greater output torque, higher efficiency, quicker response, and a simpler structure in comparison to conventional reluctance motors.

摘要翻译： 一种新型的双凸极电动机，其结合了定子/转子磁极配置和固定永磁体，其安装在定子中以在磁极重叠的整个区域上提供线性增加的磁通。 与传统的磁阻电动机相比，新的电动机提供更大的输出转矩，更高的效率，更快的响应和更简单的结构。

公开(公告)号：US5448149A

公开(公告)日：1995-09-05

申请号：US262142

申请日：1994-06-20

申请人： Mehrdad Ehsani ,  Mohammed S. Arefeen ,  Thomas A. Lipo

发明人： Mehrdad Ehsani ,  Mohammed S. Arefeen ,  Thomas A. Lipo

IPC分类号： H02P1/16 ,  H02P6/18 ,  H02P25/08 ,  H02P7/00

CPC分类号： H02P6/182 ,  H02P1/163 ,  H02P25/089

摘要： A discrete position sensor elimination technique for a sinusoidally wound synchronous reluctance motor drive uses induced voltage, phase currents, and excitation frequency to estimate rotor position at all speeds, including zero speed.

摘要翻译： 用于正弦绕组同步磁阻电动机驱动的离散位置传感器消除技术使用感应电压，相电流和激励频率来估计所有速度（包括零速度）下的转子位置。

公开(公告)号：US5304882A

公开(公告)日：1994-04-19

申请号：US881202

申请日：1992-05-11

申请人： Thomas A. Lipo ,  Yuefeng Liao

发明人： Thomas A. Lipo ,  Yuefeng Liao

IPC分类号： H02K21/16 ,  H02K21/20 ,  H02P25/08 ,  H02K21/12

CPC分类号： H02K21/20 ,  H02K21/16 ,  H02P25/08

摘要： A new class of doubly-salient variable reluctance motors which provides greater output torque, higher efficiency, quicker response, and a simple structure in comparison to conventional reluctance motors by utilizing a specific stator/rotor pole arrangement and by altering the magnetic structure of the motor by using permanent magnets to provide a linearly increasing flux linkage over the entire area of pole overlap.

摘要翻译： 一种新型的双重可变磁阻电动机，通过利用特定的定子/转子磁极装置和通过改变电动机的磁性结构，提供更大的输出转矩，更高的效率，更快的响应以及与常规磁阻电机相比的简单结构 通过使用永磁体在磁极重叠的整个区域上提供线性增加的磁链。