公开(公告)号：US06236580B1

公开(公告)日：2001-05-22

申请号：US09543965

申请日：2000-04-07

申请人： Marc F. Aiello ,  Peter W. Hammond ,  Mukul Rastogi

发明人： Marc F. Aiello ,  Peter W. Hammond ,  Mukul Rastogi

IPC分类号： H02M545

CPC分类号： H02M7/49 ,  H02M5/4585 ,  H02M2001/0074 ,  H02M2001/0077

摘要： An adjustable frequency multiphase power supply providing low harmonics to the line and load. The power supply having a plurality of power cells in each phase output thereof, each cell having an input side, and an output side. The input side is capable of converting single-phase AC into DC and for converting DC into AC to said source. The output side is capable of converting DC into a controlled AC output and for converting AC from said load to feed said DC bus. The respective outputs and respective inputs of the cells are series connected. Each cell can have a single-phase transformer connected either to the input side or the output side. The output side of each cell can be controlled to limit the harmonic content of the output AC to the load, and the input side of each cell can be controllable to limit harmonic content of the AC power feed to the source. The input and/or output sides can be interdigitated to limit harmonic components to the source and/or to reduce the harmonic content of the AC supplied to the load.

摘要翻译： 可调频多相电源，为线路和负载提供低谐波。 该电源在其各相输出中具有多个功率单元，每个单元具有输入侧和输出侧。 输入端能够将单相交流转换为直流电，并将直流转换为交流电到所述电源。 输出侧能够将DC转换成受控的AC输出，并将AC从所述负载转换为馈送所述DC总线。 各个单元的输出和各个输入串联。 每个单元可以具有连接到输入侧或输出侧的单相变压器。 可以控制每个单元的输出侧以限制输出AC到负载的谐波含量，并且每个单元的输入侧可以被控制以限制到源的AC供电的谐波含量。 输入和/或输出侧可以互相指向以限制源的谐波分量和/或减少提供给负载的AC的谐波含量。

公开(公告)号：US06301130B1

公开(公告)日：2001-10-09

申请号：US09637368

申请日：2000-08-15

申请人： Marc F. Aiello ,  Peter W. Hammond ,  Mukul Rastogi

发明人： Marc F. Aiello ,  Peter W. Hammond ,  Mukul Rastogi

IPC分类号： H02M5458

CPC分类号： H02M7/49

摘要： An improvement in a power drive is disclosed that allows four quadrant operation with reduced harmonics. The power drive has a multiphase, non phase shifted transformer with a single common input connected inductive reactance. Multiple series connected power cells are utilized, each configured for four quadrant operation and having a multiphase input and a single phase output, each controllable to reduce harmonics in both the input source line and the output line. Each power cell includes a three phase input converter, a smoothing filter, and a single phase output converter. A method for operating the power drive includes the steps of selectively controlling switching events at the input and output of each power cell such that switching events in respective power cells are spaced apart in time thereby reducing harmonic components. The method can be implemented using pulse width modulation control based upon interdigitated carrier signals which control the input and output of each power cell.

摘要翻译： 公开了一种功率驱动器的改进，其允许以减少的谐波进行四象限运算。 电源驱动器具有多相非相移变压器，单相公共输入连接感抗。 利用多个串联的功率单元，每个功率单元配置为四象限操作，并具有多相输入和单相输出，每个输出可控制以减少输入源线和输出线中的谐波。 每个功率单元包括三相输入转换器，平滑滤波器和单相输出转换器。 用于操作功率驱动器的方法包括以下步骤：选择性地控制每个功率单元的输入和输出处的切换事件，使得各个功率单元中的切换事件在时间上间隔开，从而减少谐波分量。 该方法可以使用基于交错载波信号的脉宽调制控制来实现，该信号控制每个功率单元的输入和输出。

公开(公告)号：US06417644B2

公开(公告)日：2002-07-09

申请号：US09844795

申请日：2001-04-27

申请人： Peter W. Hammond ,  Mukul Rastogi

发明人： Peter W. Hammond ,  Mukul Rastogi

IPC分类号： H02P318

CPC分类号： H02P3/18

摘要： A device and control method to produce braking torque counter to motor rotation. A converter supplies multiple frequency AC power to the motor. A first frequency is supplied at the normal operating frequency/speed. A second frequency, different from the normal operating frequency, is supplied to produce braking torque. The level of braking can be controlled to generally consume some or all of the braking in the device or motor. More than one braking frequency may be utilized. In addition, the relationship between the normal and braking frequency(s) can be maintained to limit motor pulsation.

摘要翻译： 一种产生与电机旋转相反的制动力矩的装置和控制方法。 A转换器为电机提供多路交流电源。 以正常工作频率/速度提供第一频率。 提供与正常工作频率不同的第二频率以产生制动转矩。 可以控制制动水平，以便通常消耗装置或电动机中的一些或全部制动。 可以使用多于一个的制动频率。 此外，可以保持正常和制动频率之间的关系以限制电动机的脉动。

公开(公告)号：US06262555B1

公开(公告)日：2001-07-17

申请号：US09386677

申请日：1999-08-31

申请人： Peter W. Hammond ,  Mukul Rastogi

发明人： Peter W. Hammond ,  Mukul Rastogi

IPC分类号： H02P318

CPC分类号： H02P3/18

摘要： A device and control method to produce braking torque counter to motor rotation. A converter supplies multiple frequency AC power to the motor. A first frequency is supplied at the normal operating frequency/speed. A second frequency, different from the normal operating frequency, is supplied to produce braking torque. The level of braking can be controlled to generally consume some or all of the braking in the device or motor. More than one braking frequency may be utilized. In addition, the relationship between the normal and braking frequency(s) can be maintained to limit motor pulsation.

公开(公告)号：US5986909A

公开(公告)日：1999-11-16

申请号：US82888

申请日：1998-05-21

申请人： Peter W. Hammond ,  Marc F. Aiello

发明人： Peter W. Hammond ,  Marc F. Aiello

IPC分类号： H02M1/00 ,  H02M7/48 ,  H02M7/49 ,  H02M5/458

CPC分类号： H02M7/49 ,  B60L15/007 ,  H02M2001/325 ,  Y02T10/645 ,  Y10T307/826 ,  Y10T307/983

摘要： A high output level is maintained in power supplies having multiple cells in each leg. Failed cells in any leg are bypassed to provide a current path through the respective leg. All of the unfailed cells are utilized while maintaining equal magnitude between phases and a balance phase relationship in the line-to-line output voltage. The invention may be utilized in conjunction with a peak voltage reduction circuit, and a by-pass switch.

摘要翻译： 在每条腿上具有多个单元的电源中保持高输出电平。 绕过任何支路中的故障单元以提供通过相应支路的电流路径。 使用所有未充电的电池，同时保持相间的相等幅度和线对线输出电压之间的平衡相位关系。 本发明可以与峰值电压降低电路和旁路开关结合使用。

公开(公告)号：US06313600B1

公开(公告)日：2001-11-06

申请号：US09515442

申请日：2000-02-29

申请人： Peter W. Hammond ,  Richard Osman

发明人： Peter W. Hammond ,  Richard Osman

IPC分类号： H02P528

CPC分类号： H02P1/029

摘要： An electric drive apparatus and method for controlling AC motors wherein the motor output is a function of the AC input power to the electric drive. Means are provided for detecting the voltage being supplied by the source of AC power to a drive circuit, and for controlling the output to the multi-phase AC load based on the detected power level. A controller monitors the motor voltage, current, and speed or frequency while also receiving a command for torque or torque-producing current. The method provides for the operation of the drive circuit in the event of either a partial or complete loss of AC input power. During such an occurrence, the controller will cause the circuit to generate sufficient negative torque to cause a power flow from the motor to the drive circuit to substantially equal the inherent losses in the drive and motor to avoid loss of energy from the DC filter of the drive circuit. Motor torque and speed can be quickly restored when the input power is re-established.

摘要翻译： 一种用于控制交流电动机的电驱动装置和方法，其中电动机输出是对电动驱动器的交流输入功率的函数。 提供了用于检测由驱动电路的AC电源提供的电压的装置，并且用于基于检测到的功率电平来控制对多相AC负载的输出。 控制器监控电机的电压，电流和速度或频率，同时还接收到转矩或转矩产生电流的指令。 该方法提供了在部分或完全失去AC输入功率的情况下驱动电路的操作。 在这种情况下，控制器将导致电路产生足够的负转矩，使得从电动机到驱动电路的功率流量基本上等于驱动器和电动机中的固有损耗，以避免从 驱动电路。 当重新建立输入电源时，可以快速恢复电机转矩和转速。

公开(公告)号：US6087738A

公开(公告)日：2000-07-11

申请号：US137016

申请日：1998-08-20

申请人： Peter W. Hammond

发明人： Peter W. Hammond

IPC分类号： H01F29/04 ,  H01F17/02

CPC分类号： H01F29/04 ,  Y10T307/297

摘要： A three-phase transformer having a variable output utilizes an auxiliary winding to minimize the number of switches or taps required to provide a plurality of output voltages. At least two output windings or coils each have a plurality of taps corresponding to varying percentages of output voltages. Although each output winding has at least one tap at the same voltage level, one of the output windings has an additional tap corresponding to a different output voltage level. The auxiliary winding, which preferably has a number of coil turns equal to that corresponding to the spacing between the different voltage levels on the output winding, permits one output winding to be set at a different voltage level than the other output winding. The auxiliary winding includes a pair of terminals which are alternately operable to balance the level and phase of the overall output voltage of the three-phase transformer. The device can be used as a motor starter having more variable, and hence more precise control for motor starting voltage.

摘要翻译： 具有可变输出的三相变压器利用辅助绕组来最小化提供多个输出电压所需的开关或抽头的数量。 至少两个输出绕组或线圈各自具有对应于输出电压的不同百分比的多个抽头。 虽然每个输出绕组在相同电压电平下具有至少一个抽头，但是输出绕组中的一个具有对应于不同输出电压电平的附加抽头。 辅助绕组优选地具有等于对应于输出绕组上的不同电压电平之间的间隔的线圈匝数，允许将一个输出绕组设置在与另一个输出绕组不同的电压电平。 辅助绕组包括一对端子，其可交替地操作以平衡三相变压器的总输出电压的电平和相位。 该装置可以用作具有更多变量的电动机起动器，因此可以更精确地控制电动机启动电压。

公开(公告)号：US6014323A

公开(公告)日：2000-01-11

申请号：US130076

申请日：1998-08-07

申请人： Marc F. Aiello ,  Joseph M. Matesa, Jr. ,  Peter W. Hammond

发明人： Marc F. Aiello ,  Joseph M. Matesa, Jr. ,  Peter W. Hammond

IPC分类号： H02M5/27 ,  H02M5/458 ,  H02M7/48 ,  H02M7/49 ,  H02M7/00

CPC分类号： H02M7/49 ,  H02M5/271 ,  H02M5/458 ,  H02M2007/4835

摘要： An electrical power converter for an incoming AC transformer connected to a multiphase power source and having multiple secondary windings. Each secondary winding is connected to multiple switching cells, each of which functions like a matrix converter. The secondary windings can be either single or multi-phase and more than one transformer can be provided such that the multiple secondary windings can be distributed among individual transformers. The output of at least two of the switching cells are connected in series. The switching cells can be either bi-directional or unidirectional and can also have a three-phase input. A combination of IGBTs and diodes can form the switching cells.

摘要翻译： 用于连接到多相电源并具有多个次级绕组的输入AC变压器的电力转换器。 每个次级绕组连接到多个开关单元，每个开关单元的功能如矩阵转换器。 次级绕组可以是单相或多相，并且可以提供多于一个的变压器，使得多个次级绕组可以分布在各个变压器之间。 至少两个开关单元的输出串联连接。 开关单元可以是双向的或单向的，并且还可以具有三相输入。 IGBT和二极管的组合可以形成开关单元。

公开(公告)号：US06222284B1

公开(公告)日：2001-04-24

申请号：US09413563

申请日：1999-10-06

申请人： Peter W. Hammond ,  Marc F. Aiello

发明人： Peter W. Hammond ,  Marc F. Aiello

IPC分类号： H01H3332

CPC分类号： H02M7/49 ,  B60L15/007 ,  H02M2001/325 ,  Y02T10/645 ,  Y10T307/826 ,  Y10T307/983

摘要： A high output level is maintained in power supplies having multiple cells in each leg. Failed cells in any leg are bypassed to provide a current path through the respective leg. All of the unfailed cells are utilized while maintaining equal magnitude between phases and a balance phase relationship in the line-to-line output voltage. The invention may be utilized in conjunction with a peak voltage reduction circuit, and a by-pass switch.

摘要翻译： 在每条腿上具有多个单元的电源中保持高输出电平。 绕过任何支路中的故障单元以提供通过相应支路的电流路径。 使用所有未充电的电池，同时保持相间的相等幅度和线对线输出电压之间的平衡相位关系。 本发明可以与峰值电压降低电路和旁路开关结合使用。

公开(公告)号：US6166513A

公开(公告)日：2000-12-26

申请号：US543971

申请日：2000-04-07

申请人： Peter W. Hammond

发明人： Peter W. Hammond

IPC分类号： H02M7/48 ,  H02M7/49 ,  H02M7/797 ,  H02P23/06 ,  H02P7/36

CPC分类号： H02M7/49 ,  H02M5/4585 ,  H02M7/797 ,  H02P23/06

摘要： An electric drive apparatus and method for controlling medium-voltage alternating current motors wherein a multi-phase power transformer having multiple secondary windings provides multi-phase power to multiple power cells which provide four quadrant operation. Each power cell has a single-phase output and is controllable by a modulation controller. The power cells are connected in series thus permitting the maximum output voltage for each cell to be less than the maximum line-to-line voltage. Each power cell can have a rectifier portion to convert input AC-to-DC, capacitors, an output DC-to-AC inverter, a regenerative bridge converter connected in parallel with the rectifier portion and a local modulation controller connected to a master controller.

摘要翻译： 一种用于控制中压交流电动机的电驱动装置和方法，其中具有多个次级绕组的多相电力变压器向提供四象限运行的多个电池提供多相功率。 每个功率单元具有单相输出并且可由调制控制器控制。 功率单元串联连接，允许每个单元的最大输出电压小于最大线间电压。 每个功率单元可以具有整流器部分，以转换输入AC到DC，电容器，输出DC-AC逆变器，与整流器部分并联连接的再生桥式转换器和连接到主控制器的本地调制控制器。