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公开(公告)号：US20120033468A1
公开(公告)日：2012-02-09
申请号：US13195950
申请日：2011-08-02
申请人： Douglas C. Folts , Arnold P. Kehrli
发明人： Douglas C. Folts , Arnold P. Kehrli
IPC分类号： H02M7/00
CPC分类号： H02J3/383 , Y02E10/563 , Y10T307/50 , Y10T307/707
摘要： In a general aspect, a power conversion system includes a power converter, a transformer, and a voltage adjustment device. The power converter is configured to receive a variable DC power generated by a power generation device and to convert the received DC power to AC power at a first voltage. The transformer is configured to receive the AC power from the power converter and to deliver AC power at a second voltage to a utility power network. The voltage adjustment device is configured to adjust the first voltage to a target value determined on the basis of a voltage of the DC power.
摘要翻译： 在一般方面，电力转换系统包括功率转换器，变压器和电压调节装置。 电力转换器被配置为接收由发电装置产生的可变直流电力，并且将接收到的直流电力转换为第一电压的交流电力。 变压器被配置为从电力转换器接收AC电力并且将第二电压的AC电力提供给公共电力网络。 电压调整装置被配置为将第一电压调整到基于DC电力的电压确定的目标值。
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公开(公告)号：US20100277002A1
公开(公告)日：2010-11-04
申请号：US12625093
申请日：2009-11-24
申请人： Douglas C. Folts , Arnold P. Kehrli
发明人： Douglas C. Folts , Arnold P. Kehrli
IPC分类号： H02M7/44
CPC分类号： H02J3/383 , Y02E10/563 , Y10T307/50 , Y10T307/707
摘要： In a general aspect, a power conversion system includes a power converter, a transformer, and a voltage adjustment device. The power converter is configured to receive a variable DC power generated by a power generation device and to convert the received DC power to AC power at a first voltage. The transformer is configured to receive the AC power from the power converter and to deliver AC power at a second voltage to a utility power network. The voltage adjustment device is configured to adjust the first voltage to a target value determined on the basis of a voltage of the DC power.
摘要翻译： 在一般方面，电力转换系统包括功率转换器，变压器和电压调节装置。 电力转换器被配置为接收由发电装置产生的可变直流电力，并且将接收到的直流电力转换为第一电压的交流电力。 变压器被配置为从电力转换器接收AC电力并且将第二电压的AC电力提供给公共电力网络。 电压调整装置被配置为将第一电压调整到基于DC电力的电压确定的目标值。
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公开(公告)号：US20080194411A1
公开(公告)日：2008-08-14
申请号：US11688817
申请日：2007-03-20
CPC分类号： H01L39/143 , H01B12/16 , H01L39/16 , Y02E40/647
摘要： A cryogenically-cooled HTS wire includes a stabilizer having a total thickness in a range of 200-600 micrometers and a resistivity in a range of 0.8-15.0 microOhm cm at approximately 90 K. A first HTS layer is thermally-coupled to at least a portion of the stabilizer.
摘要翻译： 低温冷却HTS丝包括总厚度在200-600微米范围内的稳定剂，在约90K下的电阻率在0.8-15.0微欧姆厘米的范围内。第一HTS层热耦合到至少一个 稳定剂的一部分。
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公开(公告)号：US06906434B1
公开(公告)日：2005-06-14
申请号：US09449435
申请日：1999-11-24
申请人： Paul Frederick Koeppe , Arnold P. Kehrli , John A. Diaz De Leon, II , Donald L. Brown , Warren Elliott Buckles , Douglas C. Folts
发明人： Paul Frederick Koeppe , Arnold P. Kehrli , John A. Diaz De Leon, II , Donald L. Brown , Warren Elliott Buckles , Douglas C. Folts
CPC分类号： H02J3/185 , Y02E40/10 , Y02E40/24 , Y02E40/67 , Y10T307/615
摘要： a voltage recovery device is configured to provide real and reactive power to a utility power network at a sufficient level and for a sufficient duration to recover the voltage on the utility power network within a predetermined proportion of the nominal voltage, following a fault condition detected on the utility power network. Moreover, the voltage recovery device reduces the overall transmission losses in a utility power system.
摘要翻译： 电压恢复装置被配置为在公用电力网络上以足够的水平提供实际和无功功率，并且在足够的持续时间内，在公用电力网络的预定比例的额定电压之内，在检测到的故障条件之后恢复公用电力网络上的电压 公用电力网络。 此外，电压恢复装置降低了公用电力系统中的总体传输损耗。
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公开(公告)号：US06337562B1
公开(公告)日：2002-01-08
申请号：US09449378
申请日：1999-11-24
IPC分类号： G05F170
摘要： The invention features a system and approach for minimizing the step voltage change as seen by the utility customer as well minimizing transients imposed on the fundamental waveform of a normal voltage carried on a utility power network when a reactive power source (e.g., capacitor bank) is instantaneously connected to the utility power. The reactive power source is adapted to transfer reactive power of a first polarity (e.g., capacitive reactive power) to the utility power network. The system includes a reactive power compensation device configured to transfer a variable quantity of reactive power of a second, opposite polarity to the utility power network, and a controller which, in response to the need to connect the shunt reactive power source to the utility power network, activates the reactive power compensation device and, substantially simultaneously, causes the shunt reactive power source to be connected to the utility power.
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6.发明授权Method and apparatus for providing battery charging in a backup power system 失效在备用电源系统中提供电池充电的方法和装置
公开(公告)号：US5302858A
公开(公告)日：1994-04-12
申请号：US805496
申请日：1991-12-11
申请人： Douglas C. Folts
发明人： Douglas C. Folts
CPC分类号： H02J7/022 , H02J9/062 , H02M7/219 , Y10T307/625
摘要： A battery in a back-up power system is charged during the time that power is available from the main AC power system by utilizing the main power transformer and the main inverter. When power is available from the main AC power source, an AC voltage appears across the primary of the transformer, which is connected to the inverter. Switches in the bridge inverter are turned on for a relatively brief period of time to short the primary of the transformer causing current through the leakage inductances of the transformer to rapidly build up. When the switching devices are turned off, the inductances induce a current to continue to flow from the primary into the inverter through anti-parallel diodes, normally back biased by the voltage from the battery, into the battery thereby charging the battery with the energy stored in the transformer inductances. The inverter current reaches zero when the energy stored in the inductance is fully discharged. The cycle may be repeated by turning on the switching devices in the inverter bridge at periodic points in time, allowing the current in the inverter to dwell periodically at zero, or by immediately turning on the switching devices again when the current into the inverter reaches zero.
摘要翻译： 备用电源系统中的电池在主电源变压器和主逆变器的主交流电源供电的时间内被充电。 当从主交流电源供电时，交流电压出现在与变频器连接的变压器的主变压器上。 桥式逆变器中的开关导通相当短的一段时间，以使变压器的初级绕组短路，使电流通过变压器的漏电感迅速建立。 当开关装置关闭时，电感引起电流继续通过反并联二极管继续从主电路流入逆变器，通常由电池的电压反向偏置到电池中，由此对存储的能量进行充电 在变压器电感中。 当存储在电感中的能量完全放电时，逆变器电流达到零。 可以通过在周期性时间点接通逆变桥中的开关装置来重复该循环，允许逆变器中的电流周期性地驻留在零点，或者当进入逆变器的电流达到零时立即再次接通开关器件 。
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公开(公告)号：US08532725B2
公开(公告)日：2013-09-10
申请号：US12692793
申请日：2010-01-25
CPC分类号： H01B12/02 , H01B12/16 , H01L39/16 , H02H7/001 , H02H9/023 , Y02E40/641 , Y02E40/647 , Y02E40/68 , Y02E40/69
摘要： A method of controlling fault currents within a utility power grid is provided. The method may include coupling a superconducting electrical path between a first and a second node within the utility power grid and coupling a non-superconducting electrical path between the first and second nodes within the utility power grid. The superconducting electrical path and the non-superconducting electrical path may be electrically connected in parallel. The superconducting electrical path may have a lower series impedance, when operated below a critical current level, than the non-superconducting electrical path. The superconducting electrical path may have a higher series impedance, when operated at or above the critical current level, than the non-superconductor electrical path.
摘要翻译： 提供一种控制公用电网内的故障电流的方法。 该方法可以包括在公用电力网内的第一和第二节点之间耦合超导电路径，并且在公用电力网格内的第一和第二节点之间耦合非超导电路径。 超导电路和非超导电路可以并联电连接。 当低于临界电流水平时，超导电路可以具有比非超导电路径更低的串联阻抗。 当超过等于或高于临界电流水平时，超导电路可能具有比非超导电路更高的串联阻抗。
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公开(公告)号：US20110134609A1
公开(公告)日：2011-06-09
申请号：US12632379
申请日：2009-12-07
申请人： Douglas C. Folts
发明人： Douglas C. Folts
IPC分类号： H05K7/20
CPC分类号： H01L23/44 , H01L23/4006 , H01L23/4012 , H01L2924/0002 , H01L2924/00
摘要： A power electronic assembly includes a pair of thermally and electrically conductive plates, and semiconductor switching elements positioned between contact surfaces of the pair of conductive plates. A first of the semiconductor switching elements is positioned at a first region of the conductive plates, and a second of the semiconductor switching elements positioned at a second region of the conductive plates. At least one of the conductive plates includes an aperture positioned between the first region and the second region of the conductive plates, such that in a compressed state, a contact surface of the conductive plate associated with the first region is substantially parallel to and offset from that of the second region in a direction parallel to the direction of compression.
摘要翻译： 功率电子组件包括一对导热板和位于一对导电板的接触表面之间的半导体开关元件。 半导体开关元件中的第一个位于导电板的第一区域，并且位于导电板的第二区域的第二半导体开关元件。 导电板中的至少一个包括位于导电板的第一区域和第二区域之间的孔，使得在压缩状态下，与第一区域相关联的导电板的接触表面基本上平行于和偏离 在平行于压缩方向的方向上的第二区域。
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公开(公告)号：USRE41170E1
公开(公告)日：2010-03-30
申请号：US11655817
申请日：2007-01-19
CPC分类号： H02J3/1842 , Y02E40/22
摘要： Power compensation is provided from a power compensation device to a utility power network carrying a nominal voltage. The power compensation device has a steady-state power delivery characteristic. The power compensation is providing by detecting a change of a predetermined magnitude in the nominal voltage on the utility power network and controlling the power compensation device to deliver, for a first period of time and in response to the detected change in the nominal voltage, reactive power to the utility power network. The power compensation device is controlled to deliver, for a second period of time following the first period of time, reactive power to the utility power network at a level that is a factor N(N>1) greater than the steady-state power delivery characteristic of the power compensation device.
摘要翻译： 功率补偿从功率补偿装置提供给承载标称电压的公用电力网络。 功率补偿装置具有稳态功率传递特性。 通过检测公用电力网络上的额定电压中的预定幅度的变化来提供功率补偿，并且控制功率补偿装置在第一时间段内并且响应于检测到的标称电压的变化而响应于电力 电力公用电力网络。 功率补偿装置被控制以在第一时间段之后的第二时间段内以大于稳态功率输送的因子N（N> 1）的水平传送到公用电力网络的无功功率 功率补偿装置的特点。
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公开(公告)号：US20080192392A1
公开(公告)日：2008-08-14
申请号：US11688827
申请日：2007-03-20
IPC分类号： H02H7/00
CPC分类号： H01F36/00 , H01B12/02 , H01L39/16 , H02H7/001 , H02H9/023 , Y02E40/641 , Y02E40/66 , Y02E40/68 , Y02E40/69
摘要： A superconducting transformer system is configured to be included within a utility power grid having a known fault current level. The superconducting transformer system includes a non-superconducting transformer interconnected between a first node and a second node of the utility power grid. A superconducting transformer is interconnected between the first node and the second node of the utility power grid. The superconducting transformer and the non-superconducting transformer are electrically connected in parallel. The superconducting transformer has a lower series impedance than the non-superconducting transformer when the superconducting transformer is operated below a critical current level and a critical temperature. The superconducting transformer is configured to have a series impedance that is at least N times the series impedance of the non-superconducting transformer when the superconducting transformer is operated at or above one or more of the critical current level and the critical temperature. N is greater than 1 and is selected to attenuate, in conjunction with an impedance of the non-superconducting transformer, the known fault current level by at least 10%.
摘要翻译： 超导变压器系统被配置为包括在具有已知故障电流电平的公用电网中。 超导变压器系统包括互连在公用电网的第一节点和第二节点之间的非超导变压器。 超导变压器在公用电网的第一节点和第二节点之间互连。 超导变压器和非超导变压器并联电连接。 当超导变压器运行在临界电流水平和临界温度以下时，超导变压器具有比非超导变压器更低的串联阻抗。 当超导变压器在等于或高于临界电流水平和临界温度的一个或多个时，超导变压器被配置为具有至少为非超导变压器的串联阻抗的N倍的串联阻抗。 N大于1并被选择以将非超导变压器的阻抗与已知故障电流水平衰减至少10％。
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