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公开(公告)号：US4673825A
公开(公告)日：1987-06-16
申请号：US702313
申请日：1985-02-15
CPC分类号： H02J9/062 , Y10T307/625 , Y10T307/735
摘要： An uninterruptible power supply including a transformer having a first input winding normally coupling an inverter AC source with a critical AC load, which transformer also includes a second input winding operable to supply power from a bypass source to the load in the event of malfunction of the inverter circuit. The inverter is of the four-quadrant pulse-width-modulated type, thereby to permit recharging of the battery which serves as the DC source to the inverter. An inductance is provided for varying the phase relationship between a utility voltage source and the inverter voltage to produce minimum real inverter current and the "break-even" operating conduction, and a step-up device is provided for increasing the utility voltage to further minimize the break-even inverter current required during normal operation, and to maximize the through-put efficiency.
摘要翻译： 一种不间断电源，包括具有通常将逆变器AC源与临界AC负载耦合的第一输入绕组的变压器，该变压器还包括第二输入绕组，其可操作以在发生故障的情况下从旁路源向负载供电 逆变电路。 逆变器是四象限的脉冲宽度调制型，从而允许将作为直流电源的电池充电到逆变器。 提供电感以改变公用电压源和逆变器电压之间的相位关系，以产生最小的实际逆变器电流和“平衡”操作导通，并且提供升压装置以增加电力电压以进一步最小化 在正常运行期间需要的稳定的逆变器电流，并最大限度地提高吞吐效率。
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公开(公告)号：US6069412A
公开(公告)日：2000-05-30
申请号：US38469
申请日：1993-03-29
CPC分类号： H02M1/4208 , H02J9/062 , H02M5/458 , H02M2001/007 , Y02B70/126 , Y10T307/615 , Y10T307/625
摘要： An uninterrupted power supply (UPS) device with uninterrupted neutral from input to output utilizes the same converter for converting rectified AC power and battery power to positive and negative high voltage (HV) rails. A simple circuit is utilized for connecting the battery to the conversion components of the PFC circuit without adverse affect on the performance of the PFC circuit, and while holding the battery substantially connected to neutral. In a first embodiment, the circuit comprises a simple combination of four diodes and a pair of high pass capacitors arranged so that in both power line and battery supply modes the battery is balanced around neutral. In a second, preferred embodiment, one terminal of the battery is connected directly to neutral.
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公开(公告)号：US5436512A
公开(公告)日：1995-07-25
申请号：US950912
申请日：1992-09-24
CPC分类号： H02J9/062 , Y10T307/32 , Y10T307/582
摘要： A UPS device adapted for parallel connection to a load along with one or more other UPS devices, having circuitry for sharing of the load, including load harmonics. A feedback network has an error signal circuit which generates an error signal representative of the difference between the actual current provided by the device and the designated share of current it should provide. The error signal is transformed by a value representative of the effective output impedance of the UPS inverter, whereby the inverter is controlled to share the fundamental of the load current as well as the harmonics.
摘要翻译： 一种适于与一个或多个其他UPS装置并联连接到负载的UPS装置，具有用于共享负载的电路，包括负载谐波。 反馈网络具有误差信号电路，其产生代表设备提供的实际电流与其应提供的指定电流份额之间的差异的误差信号。 误差信号由代表UPS逆变器的有效输出阻抗的值变换，由此控制逆变器以共享负载电流的基波以及谐波。
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4.发明授权Uninterruptible power supplies with dual-sourcing capability and methods of operation thereof 有权具有双重来源功能的不间断电源及其操作方法
公开(公告)号：US6160722A
公开(公告)日：2000-12-12
申请号：US401423
申请日：1999-09-22
CPC分类号： H02J9/062 , H02J9/061 , H02J2009/063 , H02M5/4585 , Y10T307/625 , Y10T307/636
摘要： An uninterruptible power supply (UPS) includes an AC source port configured to connect to an AC power source, a DC source port configured to connect to a DC power source and a load port configured to connect to a load. A rectifier circuit is operative to selectively couple the AC source port to first and second voltage busses through a first inductance. An inverter circuit is operative to selectively couple the load port to the first and second voltage busses through a second inductance. A bidirectional DC source coupling circuit is operative to couple the DC source port to the first and second voltage busses to provide bidirectional power transfer therebetween, preferably such that a voltage at the DC source port is maintained in a substantially fixed proportion to first and second DC voltages at respective ones of the first and second voltage busses. In one embodiment, the bidirectional DC source coupling circuit includes a transformer having first and second inductively coupled windings, the first winding having first and second end taps and a center tap coupled to the neutral bus. A switching circuit is operative to selectively couple the first end tap of the first winding to the first and second voltage busses. A rectifying circuit couples the second end tap of the first winding to the first and second voltage busses. A bidirectional DC-AC converter circuit is coupled between the second winding and the DC source port. Related operating methods are also discussed.
摘要翻译： 不间断电源（UPS）包括配置为连接到AC电源的AC源端口，被配置为连接到DC电源的DC源端口和被配置为连接到负载的负载端口。 整流器电路用于通过第一电感将AC源端口选择性地耦合到第一和第二电压总线。 逆变器电路用于通过第二电感将负载端口选择性地耦合到第一和第二电压总线。 双向DC源耦合电路用于将DC源端口耦合到第一和第二电压总线，以在它们之间提供双向功率传输，优选地使得DC源端口处的电压以基本上固定的比例维持在第一和第二DC 第一和第二电压总线中相应的电压。 在一个实施例中，双向DC源耦合电路包括具有第一和第二电感耦合绕组的变压器，第一绕组具有第一和第二端部抽头以及耦合到中性母线的中心抽头。 切换电路用于选择性地将第一绕组的第一端头抽头耦合到第一和第二电压总线。 整流电路将第一绕组的第二端抽头耦合到第一和第二电压总线。 双向DC-AC转换器电路耦合在第二绕组和DC源端口之间。 还讨论了相关的操作方法。
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公开(公告)号：US07082040B2
公开(公告)日：2006-07-25
申请号：US10809124
申请日：2004-03-25
CPC分类号： H02M1/4208 , H02J9/062 , H02M5/458 , H02M2001/007 , Y02B70/126 , Y10T307/615 , Y10T307/625
摘要： An uninterrupted power supply (UPS) device with uninterrupted neutral from input to output utilizes the same converter for converting rectified AC power and battery power to positive and negative high voltage (HV) rails. A simple circuit is utilized for connecting the battery to the conversion components of the PFC circuit without adverse affect on the performance of the PFC circuit, and while holding the battery substantially connected to neutral. In a first embodiment, the circuit comprises a simple combination of four diodes and a pair of high pass capacitors arranged so that in both power line and battery supply modes the battery is balanced around neutral. In a second, preferred embodiment, one terminal of the battery is connected directly to neutral.
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公开(公告)号：US06944035B2
公开(公告)日：2005-09-13
申请号：US10378187
申请日：2003-03-03
CPC分类号： H02M1/4208 , H02J9/062 , H02M5/458 , H02M2001/007 , Y02B70/126 , Y10T307/615 , Y10T307/625
摘要： An uninterrupted power supply (UPS) device with uninterrupted neutral from input to output utilizes the same converter for converting rectified AC power and battery power to positive and negative high voltage (HV) rails. A simple circuit is utilized for connecting the battery to the conversion components of the PFC circuit without adverse affect on the performance of the PFC circuit, and while holding the battery substantially connected to neutral. In a first embodiment, the circuit comprises a simple combination of four diodes and a pair of high pass capacitors arranged so that in both power line and battery supply modes the battery is balanced around neutral. In a second, preferred embodiment, one terminal of the battery is connected directly to neutral.
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7.发明授权公开(公告)号：US06856524B2
公开(公告)日：2005-02-15
申请号：US10378187
申请日：2003-03-03
CPC分类号： H02M1/4208 , H02J9/062 , H02M5/458 , H02M2001/007 , Y02B70/126 , Y10T307/615 , Y10T307/625
摘要： An uninterrupted power supply (UPS) device with uninterrupted neutral from input to output utilizes the same converter for converting rectified AC power and battery power to positive and negative high voltage (HV) rails. A simple circuit is utilized for connecting the battery to the conversion components of the PFC circuit without adverse affect on the performance of the PFC circuit, and while holding the battery substantially connected to neutral. In a first embodiment, the circuit comprises a simple combination of four diodes and a pair of high pass capacitors arranged so that in both power line and battery supply modes the battery is balanced around neutral. In a second, preferred embodiment, one terminal of the battery is connected directly to neutral.
摘要翻译： 一个不间断电源（UPS）设备，具有从输入到输出的不间断中性点，使用相同的转换器将整流的交流电源和电池电源转换为正和负高压（HV）导轨。 使用简单的电路将电池连接到PFC电路的转换部件，而不会对PFC电路的性能产生不利影响，并且将电池基本连接到中性线。 在第一实施例中，电路包括四个二极管和一对高通电容器的简单组合，其布置成使得在电力线和电池供电模式中，电池在中性线上平衡。 在第二个优选实施例中，电池的一个端子直接连接到空档。
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8.发明授权Power factor corrected UPS with improved connection of battery to neutral and methods of operation thereof 失效功率因数校正UPS具有改善电池与中性点的连接及其操作方法公开(公告)号：US06661678B2
公开(公告)日：2003-12-09
申请号：US10151449
申请日：2002-05-20
IPC分类号： H02M5458
CPC分类号： H02M1/4208 , H02J9/062 , H02M5/458 , H02M2001/007 , Y02B70/126 , Y10T307/615 , Y10T307/625
摘要： An uninterrupted power supply (UPS) device with uninterrupted neutral from input to output utilizes the same converter for converting rectified AC power and battery power to positive and negative high voltage (HV) rails. A simple circuit is utilized for connecting the battery to the conversion components of the PFC circuit without adverse affect on the performance of the PFC circuit, and while holding the battery substantially connected to neutral. In a first embodiment, the circuit comprises a simple combination of four diodes and a pair of high pass capacitors arranged so that in both power line and battery supply modes the battery is balanced around neutral. In a second, preferred embodiment, one terminal of the battery is connected directly to neutral.
摘要翻译： 一个不间断电源（UPS）设备，具有从输入到输出的不间断中性点，使用相同的转换器将整流的交流电源和电池电源转换为正和负高压（HV）导轨。 使用简单的电路将电池连接到PFC电路的转换部件，而不会对PFC电路的性能产生不利影响，并且将电池基本连接到中性线。 在第一实施例中，电路包括四个二极管和一对高通电容器的简单组合，其布置成使得在电力线和电池供电模式中，电池在中性线上平衡。 在第二个优选实施例中，电池的一个端子直接连接到空档。
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9.发明授权公开(公告)号：US06400586B2
公开(公告)日：2002-06-04
申请号：US09812993
申请日：2001-03-20
IPC分类号： H02M545
CPC分类号： H02M1/4208 , H02J9/062 , H02M5/458 , H02M2001/007 , Y02B70/126 , Y10T307/615 , Y10T307/625
摘要： An uninterrupted power supply (UPS) device with uninterrupted neutral from input to output utilizes the same converter for converting rectified AC power and battery power to positive and negative high voltage (HV) rails. A simple circuit is utilized for connecting the battery to the conversion components of the PFC circuit without adverse affect on the performance of the PFC circuit, and while holding the battery substantially connected to neutral. In a first embodiment, the circuit comprises a simple combination of four diodes and a pair of high pass capacitors arranged so that in both power line and battery supply modes the battery is balanced around neutral. In a second, preferred embodiment, one terminal of the battery is connected directly to neutral.
摘要翻译： 一个不间断电源（UPS）设备，具有从输入到输出的不间断中性点，使用相同的转换器将整流的交流电源和电池电源转换为正和负高压（HV）导轨。 使用简单的电路将电池连接到PFC电路的转换部件，而不会对PFC电路的性能产生不利影响，并且将电池基本连接到中性线。 在第一实施例中，电路包括四个二极管和一对高通电容器的简单组合，其布置成使得在电力线和电池供电模式中，电池在中性线上平衡。 在第二个优选实施例中，电池的一个端子直接连接到空档。
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10.发明授权Multi-mode power converters incorporating balancer circuits and methods of operation thereof 有权并入平衡器电路的多模式功率转换器及其操作方法公开(公告)号：US06314007B2
公开(公告)日：2001-11-06
申请号：US09756505
申请日：2001-01-08
IPC分类号： H02M5458
CPC分类号： H02J9/062 , H02J9/061 , H02J2009/063 , H02M5/4585 , Y10T307/625 , Y10T307/636
摘要： A power converter includes first and second voltage busses and a neutral bus. A first switching circuit, e.g., a rectifier circuit, is operative to selectively couple an input node thereof to the first and second voltage busses. A balancer circuit is operative to selectively couple the neutral bus to the first and second voltage busses such that relative magnitudes of respective first and second voltages on the first and second voltage busses are controlled responsive to respective first and second rates at which the balancer circuit couples the first and second voltage busses to the neutral bus. A second switching circuit, e.g., an inverter circuit, is operative to selectively couple the first and second voltage busses to a load connected at an output node thereof. The balancer circuit preferably includes first and second switches operative to selectively couple respective ones of the first and second voltage busses to the neutral bus through an inductance such that the relative magnitudes of the first and second voltages are controlled responsive to respective first and second duty cycles of the first and second switches. The power converter is capable of multiple operating modes and suitable for use in uninterruptible power supplies (UPSs).
摘要翻译： 功率转换器包括第一和第二电压总线和中性线。 第一开关电路（例如整流器电路）可操作以选择性地将其输入节点耦合到第一和第二电压总线。 平衡器电路用于选择性地将中性总线耦合到第一和第二电压总线，使得响应于平衡器电路耦合的相应的第一和第二速率来控制第一和第二电压总线上的相应的第一和第二电压的相对大小 第一和第二电压总线到中性母线。 第二切换电路，例如逆变器电路，用于选择性地将第一和第二电压总线耦合到连接在其输出节点处的负载。 平衡器电路优选地包括第一和第二开关，其操作用于通过电感选择性地将第一和第二电压总线中的相应一个组合到中性总线，使得响应于相应的第一和第二占空比来控制第一和第二电压的相对大小 的第一和第二开关。 电源转换器具有多种工作模式，适用于不间断电源（UPS）。
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