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1.发明授权Systems and apparatus for fault detection in DC power sources using AC residual current detection 有权使用交流剩余电流检测的直流电源故障检测系统和装置公开(公告)号：US09297862B2
公开(公告)日：2016-03-29
申请号：US13193026
申请日：2011-07-28
CPC分类号： G01R31/40 , G01R31/025 , H02S50/00
摘要： A fault in a DC power source, such as a battery string or a string of photovoltaic cells, is identified by detecting a change in an AC component of a residual current of the DC power source. In some embodiments, the DC power source is coupled to at least one DC bus and the methods further include generating an AC voltage on the at least one DC bus. For example, the DC power source may be coupled to a modulated DC bus of an uninterruptible power supply (UPS) system comprising an inverter having an input coupled to the DC bus. The inverter may be configured to generate an AC output voltage and the AC component has a frequency that is a harmonic of a fundamental frequency of the AC output voltage, such as a third harmonic of the fundamental frequency of the AC output voltage.
摘要翻译： 通过检测直流电源的剩余电流的交流分量的变化来识别DC电源中的故障，例如电池串或一串光伏电池。 在一些实施例中，DC电源耦合到至少一个DC总线，并且所述方法还包括在所述至少一个DC总线上产生AC电压。 例如，DC电源可以耦合到不间断电源（UPS）系统的调制DC总线，其包括具有耦合到DC总线的输入的反相器。 逆变器可以被配置为产生AC输出电压，并且AC分量具有作为交流输出电压的基频的谐波的频率，例如AC输出电压的基频的三次谐波。
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2.发明授权Power converter apparatus and methods using neutral coupling circuits with interleaved operation 有权电力变换装置和方法采用具有交错运算的中性耦合电路公开(公告)号：US07800924B2
公开(公告)日：2010-09-21
申请号：US11691718
申请日：2007-03-27
CPC分类号： H02M5/4585 , H02M7/493 , H02M2001/123
摘要： A power converter apparatus, such as an uninterruptible power supply (UPS), includes an inverter having an input coupled to a first DC bus and a second DC bus and configured to generate an AC output with respect to a neutral terminal at a phase output terminal thereof. The apparatus further includes first and second neutral coupling circuits, each configured to selectively couple the first DC bus and the second DC bus to the neutral terminal, and a control circuit configured to cause interleaved operation of the neutral coupling circuits.
摘要翻译： 诸如不间断电源（UPS）的电力转换装置包括具有耦合到第一DC总线和第二DC总线的输入的反相器，并且被配置为在相位输出端子处产生相对于中性点的AC输出 其中。 该装置还包括第一和第二中性点耦合电路，每一个被配置为将第一DC总线和第二DC总线选择性地耦合到中立端子;以及控制电路，被配置为引起中性点耦合电路的交错运算。
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公开(公告)号：US07205875B2
公开(公告)日：2007-04-17
申请号：US10846244
申请日：2004-05-14
CPC分类号： H01F27/085 , H01F17/045 , H01F27/322 , H01F27/324 , H01F37/00
摘要： An inductor includes an elongate magnetic core, a coil wrapped around the core and a spacer that separates the coil from the core to provide a coolant passage between the coil and the core. The coolant passage may include an air passage that extends substantially parallel to an axis of the core and that has first and second openings proximate respective first and second ends of the core. The coil may include a twisted bundle of individually insulated conductors. The inductor may be housed in a flux-tolerant compartment, i.e., a conductive aluminum structure that supports eddy currents with relatively acceptable resistive losses.
摘要翻译： 电感器包括细长的磁芯，缠绕在芯上的线圈和将线圈与芯分离以在线圈和芯之间提供冷却剂通道的间隔件。 冷却剂通道可以包括空气通道，其基本上平行于芯的轴线延伸，并且具有靠近芯的相应的第一和第二端的第一和第二开口。 线圈可以包括单独绝缘导体的扭绞束。 电感器可以容纳在容许容纳室中，即支持具有相对可接受的电阻损耗的涡流的导电铝结构。
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4.发明申请SYSTEMS AND APPARATUS FOR FAULT DETECTION IN DC POWER SOURCES USING AC RESIDUAL CURRENT DETECTION 有权使用交流电流检测在直流电源中进行故障检测的系统和装置公开(公告)号：US20130027077A1
公开(公告)日：2013-01-31
申请号：US13193026
申请日：2011-07-28
IPC分类号： G01R31/40
CPC分类号： G01R31/40 , G01R31/025 , H02S50/00
摘要： A fault in a DC power source, such as a battery string or a string of photovoltaic cells, is identified by detecting a change in an AC component of a residual current of the DC power source. In some embodiments, the DC power source is coupled to at least one DC bus and he methods further include generating an AC voltage on the at least one DC bus. For example, the DC power source may be coupled to a modulated DC bus of an uninterruptible power supply (UPS) system comprising an inverter having an input coupled to the DC bus. The inverter may be configured to generate an AC output voltage and the AC component has a frequency that is a harmonic of a fundamental frequency of the AC output voltage, such as a third harmonic of the fundamental frequency of the AC output voltage.
摘要翻译： 通过检测直流电源的剩余电流的交流分量的变化来识别DC电源中的故障，例如电池串或一串光伏电池。 在一些实施例中，DC电源耦合到至少一个DC总线，并且他的方法还包括在至少一个DC总线上产生AC电压。 例如，DC电源可以耦合到不间断电源（UPS）系统的调制DC总线，其包括具有耦合到DC总线的输入的反相器。 逆变器可以被配置为产生AC输出电压，并且AC分量具有作为交流输出电压的基频的谐波的频率，例如AC输出电压的基频的三次谐波。
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5.发明申请公开(公告)号：US20120153995A1
公开(公告)日：2012-06-21
申请号：US12968861
申请日：2010-12-15
IPC分类号： H03K3/00
CPC分类号： H03K17/00
摘要： A resonant tank circuit has an output port configured to be coupled to a load comprising a current-controlled semiconductor device, such as a diode, thyristor, transistor or the like. A voltage generator circuit is configured to intermittently apply voltages to an input port of the resonant tank circuit in successive intervals having a duration equal to or greater than a resonant period of the resonant tank circuit. Such an arrangement may be used, for example, to drive a static switch.
摘要翻译： 谐振回路具有被配置为耦合到包括诸如二极管，晶闸管，晶体管等的电流控制半导体器件的负载的输出端口。 电压发生器电路被配置为以等于或大于谐振回路的谐振周期的持续时间间隔地向谐振回路的输入端口施加电压。 这种布置可以用于例如驱动静态开关。
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公开(公告)号：US5399913A
公开(公告)日：1995-03-21
申请号：US939311
申请日：1992-09-02
IPC分类号： H03K17/567 , H02M9/06 , H03K17/60
CPC分类号： H03K17/567 , H03K17/61
摘要： A gate-drive circuit (10) is an interface between a clock (12) and control circuit (14) and a circuit (16) comprising an isolated gate bipolar transistor (IGBT) devices. The clock (12) provides two complementary clock signals (CLK1, CLK2) to the gate-drive circuit (10); the control circuit provides a signal (ENABLE) for turning the gate-drive circuit on and off, and the gate-drive circuit outputs isolated supply voltages (+RAIL, -RAIL), a drive signal (GATE), and a common reference signal (EMITTER). The control signal is sent across an isolation boundary via a 2-MHz push-pull converter in the gate-drive circuit (10). A transformer (T1) in the gate-drive circuit provides the isolation boundary. The power required to switch the IGBT device (16) is sent through the same 2-MHz converter. The secondary of the 2-MHz push-pull transformer (T1) is referenced to the IGBT emitter. As the primary side circuitry receives "on" signals from the control board (14), the converter runs and charges secondary-side bulk storage capacitors (C16, C18) in the gate-drive circuit. The gate voltage of the IGBT device is held off until the bulk storage capacitors are charged to a minimum value. When the capacitors have charged, the IGBT gate is turned on as the signal is received from the push-pull converter. The gate is then turned off by a negative voltage when the signal received from the converter is removed.
摘要翻译： 栅极驱动电路（10）是时钟（12）和控制电路（14）之间的接口以及包括隔离栅双极晶体管（IGBT）器件的电路（16）。 时钟（12）向栅极驱动电路（10）提供两个互补时钟信号（CLK1，CLK2）; 所述控制电路提供用于打开和关闭所述栅极驱动电路的信号（ENABLE），并且所述栅极驱动电路输出隔离电源电压（+ RAIL，-RAIL），驱动信号（GATE）和公共参考信号 （EMITTER）。 控制信号通过栅极驱动电路（10）中的2MHz推挽转换器跨越隔离边界发送。 栅极驱动电路中的变压器（T1）提供隔离边界。 切换IGBT器件（16）所需的电源通过相同的2 MHz转换器发送。 2 MHz推挽变压器（T1）的次级参考IGBT发射极。 当初级侧电路从控制板（14）接收“开”信号时，转换器对栅极驱动电路中的次级侧大容量存储电容器（C16，C18）进行充电。 IGBT器件的栅极电压被截止，直到大容量存储电容器被充电到最小值。 当电容器已经充电时，随着从推挽式转换器接收到信号，IGBT栅极导通。 当从转换器接收到的信号被去除时，门被负电压关闭。
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公开(公告)号：US4988889A
公开(公告)日：1991-01-29
申请号：US374697
申请日：1989-07-03
CPC分类号： H05B33/0815 , H02J9/065 , H05B33/0827 , Y10T307/625
摘要： A buck/boost converter is driven by a high frequency dc-to-dc flyback converter to provide substantially constant output power, independent of the output voltage, to an inductor to provide current to a load having a v-i characteristic that is suitable for use with a current power source, such as a plurality of parallely-connected LEDs. The flyback converter repetitively generates a battery-simulated output voltage that is current-limited and which may be used to charge a battery as well as to provide power to the buck/boost converter. The buck/boost converter includes a switching circuit for repetitively transferring current to the load and a current sensor circuit operating in conjunction with the switching circuit to change the state of the buck/boost converter to repetitively open the switching means and initiate release of the current to the load.
摘要翻译： 降压/升压转换器由高频直流到直流反激转换器驱动，以向电感器提供与输出电压无关的基本恒定的输出功率，以向具有适合与 当前的电源，例如多个平行连接的LED。 反激转换器重复地产生电流限制的电池模拟输出电压，其可用于对电池充电以及向降压/升压转换器提供电力。 降压/升压转换器包括用于重复地将电流传送到负载的开关电路和与开关电路一起操作的电流传感器电路，以改变降压/升压转换器的状态以重复地打开开关装置并且启动电流的释放 到负载。
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8.发明授权Apparatus and methods for monitoring parallel-connected power switching devices responsive to drive circuit parameters 有权用于根据驱动电路参数监视并联电源开关装置的装置和方法公开(公告)号：US07583109B2
公开(公告)日：2009-09-01
申请号：US11226118
申请日：2005-09-14
CPC分类号： H02M1/08
摘要： An apparatus, such as an inverter or rectifier in a double-conversion UPS, includes a plurality of power switching devices, such as IGBTs, coupled in parallel. A drive circuit is coupled to the power switching devices at a plurality of drive nodes and configured to drive the drive nodes responsive to a drive control signal. A monitoring circuit is coupled to the drive circuit and configured to determine respective statuses of respective ones of the power switching devices. The monitoring circuit may be configured to generate respective measures of drive delivered to respective ones of the drive nodes.
摘要翻译： 诸如双变换UPS中的逆变器或整流器的装置包括并联耦合的多个功率开关器件，例如IGBT。 驱动电路在多个驱动节点处耦合到功率开关装置，并且被配置为响应于驱动控制信号来驱动驱动节点。 监视电路耦合到驱动电路并且被配置为确定各个功率开关器件的相应状态。 监视电路可以被配置为产生传递给相应驱动节点的驱动的相应测量值。
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9.发明授权Uninterruptible power supply systems and methods using rectified AC with current control 有权不间断电源系统及采用整流式交流电流控制的方法公开(公告)号：US06753622B2
公开(公告)日：2004-06-22
申请号：US09798409
申请日：2001-03-02
IPC分类号： H02J700
CPC分类号： H02M1/10 , H02J9/061 , Y10T307/615
摘要： An uninterruptible power supply (UPS) system includes an AC input port, a DC input port, and an output port configured to be connected to an AC load. A rectifier circuit is coupled to the AC input port, and a power transfer control circuit is coupled to the rectifier circuit output, the DC input port and the output port. The power transfer control circuit produces a DC voltage at the AC load from a rectified voltage produced by the rectifier circuit in a first mode of operation and from a DC voltage at the DC input port in a second mode of operation. A current control circuit, e.g., a boost regulator, may control a current from at least one of the rectifier circuit and the DC input port responsive to a control input. A DC/DC converter circuit may be coupled between the DC input port and the output port.
摘要翻译： 不间断电源（UPS）系统包括交流输入端口，直流输入端口和配置为连接到交流负载的输出端口。 整流电路耦合到AC输入端口，电源传输控制电路耦合到整流电路输出，DC输入端口和输出端口。 功率传递控制电路在第一操作模式下，由整流电路产生的整流电压和在第二操作模式下的直流输入端口处的直流电压，在交流负载下产生直流电压。 电流控制电路，例如升压调节器，可以响应于控制输入来控制来自整流器电路和DC输入端口中的至少一个的电流。 DC / DC转换器电路可以耦合在DC输入端口和输出端口之间。
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10.发明授权Uninterruptible power supply systems, voltage regulators and operating methods employing controlled ferroresonant transformer circuits 有权不间断电源系统，电压调节器和采用受控铁磁共振变压器电路的操作方法公开(公告)号：US06348782B1
公开(公告)日：2002-02-19
申请号：US09165859
申请日：1998-10-02
IPC分类号： G05F113
CPC分类号： H02J9/062 , H02J2009/067 , Y10T307/516
摘要： An uninterruptable power supply system for producing an AC voltage from at least one of a DC power source or an AC power source includes an input terminal configured to receive an AC voltage from an AC power source, and an inverter operative to produce an AC voltage at an output thereof from a DC power source. A ferroresonant transformer circuit includes a transformer having an input winding, a output winding, and a third winding that forms part of a resonant circuit that produces saturation in the output winding when an AC voltage on the input winding exceeds a predetermined amplitude. A transformer input control circuit is coupled to the input terminal and to the inverter output and is operative to couple at least one of the input terminal and the inverter output to the input winding. The transformer input control circuit variably couples the input terminal to the input winding responsive to at least one of a voltage at the input terminal, a current in the output winding, a voltage on the output winding and a current at the input terminal. Related voltage regulators and methods are also described.
摘要翻译： 用于从DC电源或AC电源中的至少一个产生AC电压的不间断电源系统包括被配置为从AC电源接收AC电压的输入端子，以及用于产生AC电压的逆变器 其来自直流电源的输出。 铁磁谐振变压器电路包括具有输入绕组，输出绕组和第三绕组的变压器，当输入绕组上的AC电压超过预定振幅时，其形成谐振电路的一部分，该谐振电路在输出绕组中产生饱和。 变压器输入控制电路耦合到输入端和逆变器输出，并且可操作地将输入端和逆变器输出中的至少一个耦合到输入绕组。 变压器输入控制电路响应于输入端子处的电压，输出绕组中的电流，输出绕组上的电压和输入端子处的电流中的至少一个，将输入端子可变地耦合到输入绕组。 还描述了相关的电压调节器和方法。
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