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公开(公告)号：US20070035261A1
公开(公告)日：2007-02-15
申请号：US11504567
申请日：2006-08-14
IPC分类号： H02P1/54
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：US20070035263A1
公开(公告)日：2007-02-15
申请号：US11503327
申请日：2006-08-11
IPC分类号： H02P7/00
摘要： A method for controlling at least two variable frequency drives connected in parallel. The method comprises, for each variable frequency drive, communicating a magnetizing current component value to a master controller, and receiving a speed demand, a flux demand, and an average magnetizing current component value from the master controller. The method also comprises determining a motor speed and a motor flux based on measurements of a stator voltage and current of a motor coupled to the variable frequency drive, determining a speed reference based on a torque current component value, and determining a flux reference based on the magnetizing current component value and the average magnetizing current component value. The method further comprises adjusting a torque current component based on the speed reference and/or adjusting a magnetizing current component based on the flux reference.
摘要翻译： 一种用于控制并联连接的至少两个变频驱动器的方法。 该方法包括：对于每个可变频率驱动器，将磁化电流分量值传送到主控制器，以及从主控制器接收速度需求，磁通量需求和平均磁化电流分量值。 该方法还包括基于耦合到可变频率驱动器的电动机的定子电压和电流的测量来确定电动机速度和电动机通量，基于转矩电流分量值确定速度参考，以及基于 磁化电流分量值和平均磁化电流分量值。 该方法还包括基于速度参考调整转矩电流分量和/或基于通量参考调整磁化电流分量。
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公开(公告)号：US07405498B2
公开(公告)日：2008-07-29
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： H02J1/02
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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4.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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7.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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8.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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