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11.发明授权公开(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。
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公开(公告)号：US5548165A
公开(公告)日：1996-08-20
申请号：US276543
申请日：1994-07-18
申请人： Ned Mohan , Mukul Rastogi
发明人： Ned Mohan , Mukul Rastogi
CPC分类号： H02J3/01 , G05F1/12 , H02M1/12 , Y02E40/40 , Y10T307/445
摘要： An apparatus and method for reducing distortion currents present in an alternating current power system supplying power to a load which includes a passive filter and an active filter. In a first embodiment, the passive filter is operably connected to the power system across the load by a switching device. An active filter is then connected across the switching device and operated to draw a current equal to the current through the passive filter. The active filter and the passive filter are thereby connected in series across the load. The active filter is controlled to draw a fundamental frequency component and to provide distortion currents required by the load. In a second embodiment, the active filter is connected in parallel with a first circuit, the parallel combination of which is connected in series with a second circuit across the load. Besides providing distortion currents required by the load, the active filter is controlled to draw a current substantially in phase with the voltage across it in order to provide damping.
摘要翻译： 一种用于减少在包括无源滤波器和有源滤波器的负载上供电的交流电力系统中存在的失真电流的装置和方法。 在第一实施例中，无源滤波器通过开关装置可操作地连接到负载上的电力系统。 然后，有源滤波器跨越开关装置连接并且被操作以绘制等于通过无源滤波器的电流的电流。 有源滤波器和无源滤波器因此在负载上串联连接。 控制有源滤波器以绘制基频分量并提供负载所需的失真电流。 在第二实施例中，有源滤波器与第一电路并联连接，第一电路的并联组合与跨负载的第二电路串联连接。 除了提供负载所需的失真电流之外，有源滤波器被控制以使电流与其上的电压基本上同相，以提供阻尼。
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公开(公告)号：US08879287B2
公开(公告)日：2014-11-04
申请号：US13754208
申请日：2013-01-30
摘要： Apparatus and methods in accordance with this invention provide a multi-cell power supply for receiving power from a source and delivering power at an output terminal to a load. The multi-cell power supply includes a first power cell coupled to the source, and a first current sensor circuit. The first power cell provides a first output current, and includes a first output terminal coupled to a reference node of the multi-cell power supply, and a second output terminal coupled to the output terminal. The first current sensor circuit includes a first current sensor and a power supply. The first current sensor is coupled to the first output terminal of the first power cell, and measures the first output current. The power supply is coupled to either the reference node or a floating ground node of the first power cell, and provides power to the first current sensor.
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14.发明授权Method and system for reducing switching losses in a high-frequency multi-cell power supply 有权降低高频多单元电源开关损耗的方法和系统公开(公告)号：US08169107B2
公开(公告)日：2012-05-01
申请号：US12474746
申请日：2009-05-29
IPC分类号： H02J7/34
CPC分类号： H02M7/49 , H02M7/5395 , H02M2001/0048 , Y02B70/1491 , Y10T307/549
摘要： A method of reducing switching losses in a power supply includes the steps of advancing the output voltage of a first pole of a power cell by a first angle, retarding the output voltage of a second pole of the power cell by a second angle, and producing a combined output voltage of the power cell equal to a positive pulse of a duration angle equal to the sum of the first angle and the second angle for a first half of a switching cycle of the power cell, and equal to a negative pulse of a duration angle equal to the sum of the first angle and the second angle for a second half of the switching cycle of the power cell.
摘要翻译： 一种降低电源中的开关损耗的方法包括以下步骤：将功率单元的第一极的输出电压提高第一角度，将功率单元的第二极的输出电压延迟第二角度，并产生 功率单元的组合输出电压等于功率单元的开关周期的前半部分等于第一角度和第二角度之和的持续时间角的正脉冲，并且等于负的脉冲 持续时间角等于功率单元的开关周期的后半段的第一角度和第二角度之和。
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15.发明申请METHOD AND SYSTEM FOR REDUCING SWITCHING LOSSES IN A HIGH-FREQUENCY MULTI-CELL POWER SUPPLY 有权降低高频多电源供电中切换损耗的方法与系统公开(公告)号：US20090302682A1
公开(公告)日：2009-12-10
申请号：US12474746
申请日：2009-05-29
IPC分类号： H02J4/00
CPC分类号： H02M7/49 , H02M7/5395 , H02M2001/0048 , Y02B70/1491 , Y10T307/549
摘要： A method of reducing switching losses in a power supply includes the steps of advancing the output voltage of a first pole of a power cell by a first angle, retarding the output voltage of a second pole of the power cell by a second angle, and producing a combined output voltage of the power cell equal to a positive pulse of a duration angle equal to the sum of the first angle and the second angle for a first half of a switching cycle of the power cell, and equal to a negative pulse of a duration angle equal to the sum of the first angle and the second angle for a second half of the switching cycle of the power cell.
摘要翻译： 一种降低电源中的开关损耗的方法包括以下步骤：将功率单元的第一极的输出电压提高第一角度，将功率单元的第二极的输出电压延迟第二角度，并产生 功率单元的组合输出电压等于功率单元的开关周期的前半部分等于第一角度和第二角度之和的持续时间角的正脉冲，并且等于负的脉冲 持续时间角等于功率单元的开关周期的后半段的第一角度和第二角度之和。
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公开(公告)号：US07477037B2
公开(公告)日：2009-01-13
申请号：US11504567
申请日：2006-08-14
IPC分类号： H02P27/04
CPC分类号： H02P5/46 , H02P29/032
摘要： A method for controlling at least two series-cell based drives connected in parallel. The method comprises detecting a failed cell in one of the drives, inhibiting operation of the drive with the failed cell, determining a peak output voltage capability of the drive with the failed cell, communicating the peak output voltage capability to a master controller, and limiting a maximum voltage that each drive can apply to a motor. The method also comprises bypassing the failed cell and resuming operation of the drive with the failed cell after the motor voltage falls below the peak output voltage capability of the drive with the failed cell.
摘要翻译： 用于控制并联连接的至少两个基于串联单元的驱动器的方法。 该方法包括检测其中一个驱动器中的故障单元，禁止具有故障单元的驱动器的操作，确定具有故障单元的驱动器的峰值输出电压能力，将峰值输出电压能力传递给主控制器，并限制 每个驱动器可以应用于电机的最大电压。 该方法还包括在电动机电压低于具有故障单元的驱动器的峰值输出电压能力之后绕过故障单元并且恢复具有故障单元的驱动器的操作。
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公开(公告)号：US20070109823A1
公开(公告)日：2007-05-17
申请号：US11435181
申请日：2006-05-16
申请人： Mukul Rastogi , Peter Hammond , Stan Simms
发明人： Mukul Rastogi , Peter Hammond , Stan Simms
IPC分类号： H02M1/12
CPC分类号： H02J3/1857 , H02M7/49 , Y02E40/26
摘要： A multi-phase active filter includes a group of power cells electrically connected in a three-phase configuration, a precharging circuit, and a controller that controls the voltage delivered to the plurality of power cells. Each power cell includes an inverter having a pair of direct current (DC) terminals, at least one capacitor electrically connected in parallel with the inverter, and an energy dissipating circuit that is electrically connected in parallel with the inverter. The energy dissipating circuit of each power cell self-regulates DC voltage within the cell.
摘要翻译： 多相有源滤波器包括以三相配置电连接的一组功率单元，预充电电路和控制输送到多个功率单元的电压的控制器。 每个功率单元包括具有一对直流（DC）端子的逆变器，与逆变器并联电连接的至少一个电容器和与逆变器并联电连接的能量消耗电路。 每个功率单元的耗能电路自调节电池内的直流电压。
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18.发明授权公开(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。
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公开(公告)号：US20140063871A1
公开(公告)日：2014-03-06
申请号：US14013215
申请日：2013-08-29
IPC分类号： H02M5/458
CPC分类号： H02M5/4585 , H02J3/36 , H02J5/00 , H02M7/4807 , H02M7/49 , H02M2007/4835 , Y02E60/60 , Y10T29/49117
摘要： A system for delivering power to an offshore load is disclosed. The system may include an on-land source of three-phase power, an on-land AC-to-DC power conversion module, a DC transmission line, and an offshore DC-to-AC power inverter. The on-land AC-to-DC power conversion module may be configured to convert the three-phase power to DC power. The DC transmission line may have a source end and a load end, where the source end is configured to receive DC power from the on-land AC-to-DC power conversion module. The offshore DC-to-AC power inverter may be configured to receive DC power from the DC transmission line, convert the DC power to three-phase AC power, and deliver the three-phase AC power to an offshore load.
摘要翻译： 公开了一种向海上负载供电的系统。 该系统可以包括三相电力的陆地源，陆上AC到DC电力转换模块，直流输电线路和离岸DC到AC电力逆变器。 陆上AC-DC电力转换模块可以被配置为将三相电力转换为DC电力。 DC传输线可以具有源端和负载端，其中源端被配置为从陆上AC到DC电力转换模块接收DC电力。 离岸DC-AC电力逆变器可以被配置为从DC传输线路接收直流电力，将DC电力转换成三相AC电力，并将三相AC电力输送到海上负载。
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公开(公告)号：US08200460B2
公开(公告)日：2012-06-12
申请号：US12508525
申请日：2009-07-23
IPC分类号： G06F17/50
摘要： A method for designing a transformer using three secondary winding phase shift angles and a minimized core cross-sections. The method includes receiving an indication of an acceptable level of total harmonic distortion (THD) for the transformer, identifying a desired number of secondary windings per output phase of the transformer, simulating performance of various models for the transformer various potential phase shift angles, wherein each of the various models includes a set of phase shift angles for the secondary windings of the transformer. The method further includes identifying, based on the simulation, a transformer model that both has no more than three unique phase shift angles in the set and exhibits a primary side THD that is within the acceptable level, identifying an optimized core cross-sections, and reporting the identified transformer model having the three unique phase shift angle and the optimized core cross-sections.
摘要翻译： 一种使用三个次级绕组相移角度和最小化的芯部横截面来设计变压器的方法。 该方法包括接收变压器的总谐波失真（THD）的可接受水平的指示，识别变压器每输出相位期望次数的次级绕组，模拟变压器各种模型的性能各种潜在的相移角，其中 各种模型中的每一个包括用于变压器的次级绕组的一组相移角。 该方法还包括基于模拟识别变压器模型，其在集合中具有不超过三个独特的相移角，并且显示处于可接受水平内的初级侧THD，识别优化的芯横截面，以及 报告具有三个独特相移角和优化的核心横截面的所识别的变压器模型。
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