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1. 发明授权

US08106537B2 Photovoltaic DC/DC micro-converter 有权
标题翻译：光伏DC / DC微转换器
公开(公告)号：US08106537B2
公开(公告)日：2012-01-31
申请号：US12495840
申请日：2009-07-01
申请人： Leo Francis Casey , Mark George Prestero , Janos Rajda
发明人： Leo Francis Casey , Mark George Prestero , Janos Rajda
IPC分类号： H01J1/14
CPC分类号： H01L31/02021 , H02J1/102 , H02J3/383 , H02S40/32 , Y02E10/563 , Y10T307/696 , Y10T307/707
摘要： A photo-voltaic (PV) power generating system and a control system for PV array string-level control and PV modules serially-connected into strings of PV modules. The system includes plural parallel strings of serially-connected power-generating photovoltaic modules that form a PV array, DC/DC micro-converters that are coupled to a DC voltage buss and to the output of a corresponding photovoltaic module or to the output of a string of photovoltaic modules; a gating or central inverter; and a control system. The control system is structured and arranged to control and manage each string of photovoltaic modules, to ensure that power delivered by the photovoltaic power generating system is not affected by photovoltaic modules or strings of photovoltaic modules that are not operating at maximum power transfer efficiency.
摘要翻译：光伏发电系统和光伏阵列串级控制的控制系统和串联连接到光伏组件串的PV模块。该系统包括形成PV阵列的串联连接的发电光伏模块的多个并联串，耦合到DC电压总线的DC / DC微转换器以及相应的光伏模块的输出或相应的光伏模块的输出一串光伏组件; 门控或中央逆变器; 和控制系统。控制系统被构造和布置成控制和管理每串光伏模块，以确保由光伏发电系统传递的功率不受光伏模块或不以最大功率传输效率运行的光伏模块串的影响。

2. 发明授权

US06603795B2 Power control system for AC electric arc furnace 有权
标题翻译：交流电弧炉功率控制系统
公开(公告)号：US06603795B2
公开(公告)日：2003-08-05
申请号：US09778835
申请日：2001-02-08
申请人： Thomas Lai Wai Ma , Mohammad Sedighy , Brian Kenneth Perkins , Theodorus Anthonius Gerritsen , Janos Rajda
发明人： Thomas Lai Wai Ma , Mohammad Sedighy , Brian Kenneth Perkins , Theodorus Anthonius Gerritsen , Janos Rajda
IPC分类号： H05B7144
CPC分类号： H05B7/148 , C21C5/5211 , C21C5/5294 , Y02P10/216 , Y02P10/256 , Y02P10/259
摘要： A power control system for an AC electric arc furnace. The control system includes variable reactors located intermediate a furnace power supply and arc electrodes that are height adjustable. The control system monitors operating characteristics of the furnace that are indicative of the active power consumption of the furnace and adjusts the variable reactors and the electrode height so as to minimize variations in the active power consumption. Loss of electrode arc can be predicted and countered by lowering the electrodes and decreasing the reactance of the variable reactors.
摘要翻译：交流电弧炉功率控制系统。控制系统包括位于炉电源和高度可调的电弧电极之间的可变电抗器。控制系统监测炉的操作特性，其指示炉的有功功率消耗，并且调节可变电抗器和电极高度，以便最小化有功功率消耗的变化。可以通过降低电极和降低可变电抗器的电抗来预测和抵消电极电弧的损失。

3. 发明授权

US6137277A Static voltage regulator 失效
标题翻译：静态稳压器
公开(公告)号：US6137277A
公开(公告)日：2000-10-24
申请号：US429622
申请日：1999-10-29
申请人： Janos Rajda , Shashi Dewan , Rusong Wu , Jianping Li
发明人： Janos Rajda , Shashi Dewan , Rusong Wu , Jianping Li
IPC分类号： G05F1/20 , G05F5/00 , G05F1/16 , G05F1/26
CPC分类号： G05F1/20
摘要： A static voltage regulator consists of a booster transformer, a regulator transformer, an electronic switching system and a control system. The booster transformer includes a booster primary winding and a booster secondary winding. The booster secondary is provided in series with the input and output terminals of the regulator so as to produce an output voltage. The regulator transformer includes a regulator primary winding and a regulator secondary winding. The regulator primary is electrically coupled to the output. The electronic switching system is coupled between the regulator secondary and the booster primary for providing a voltage to the booster primary. The control system includes a voltage sensor for sensing a voltage at the input, and a gating system coupled to the switching system for switching the output voltage in response to changes in the sensed input voltage. The voltage regulator also includes a notch filter coupled to the booster transformer for reducing transients induced in the booster transformer when the output voltage is switched.
摘要翻译：静态稳压器由增压变压器，调压变压器，电子开关系统和控制系统组成。升压变压器包括增压器初级绕组和升压二次绕组。增压器次级与调节器的输入和输出端串联提供，以产生输出电压。调节器变压器包括调节器初级绕组和调节器次级绕组。调节器主电路电耦合到输出端。电子开关系统耦合在调节器次级和升压器初级之间，以向升压器初级提供电压。控制系统包括用于感测输入端的电压的电压传感器，以及耦合到开关系统的选通系统，用于响应于感测的输入电压的变化来切换输出电压。电压调节器还包括耦合到升压变压器的陷波滤波器，用于当切换输出电压时减小升压变压器中感应的瞬变。

4. 发明申请

US20060267560A1 Device, system, and method for providing a low-voltage fault ride-through for a wind generator farm 有权
公开(公告)号：US20060267560A1
公开(公告)日：2006-11-30
申请号：US11439892
申请日：2006-05-24
申请人： Janos Rajda , Anthony Galbraith , Colin Schauder
发明人： Janos Rajda , Anthony Galbraith , Colin Schauder
IPC分类号： G05F1/70
CPC分类号： G05F1/70 , F03D9/257 , H02P9/102 , H02P2101/15 , Y02E10/72
摘要： A device, a system, and a method for preventing power-producing wind turbine generators from tripping due to the detection of a low-voltage condition on a power grid are disclosed. The disclosed device includes a resistor bank that absorbs real power and a control system that maintains the collector bus voltage above a threshold voltage level during the duration of low-voltage condition on the power grid. Collector bus voltage is maintained using gating signals that include phase delay angles to adjust the opening/closing of the switching devices.

5. 发明授权

US06519274B2 Power control system for AC electric arc furnace 有权
公开(公告)号：US06519274B2
公开(公告)日：2003-02-11
申请号：US09778835
申请日：2001-02-08
申请人： Thomas Lai Wai Ma , Mohammad Sedighy , Brian Kenneth Perkins , Theodorus Anthonius Gerritsen , Janos Rajda
发明人： Thomas Lai Wai Ma , Mohammad Sedighy , Brian Kenneth Perkins , Theodorus Anthonius Gerritsen , Janos Rajda
IPC分类号： H05B7144
CPC分类号： H05B7/148 , C21C5/5211 , C21C5/5294 , Y02P10/216 , Y02P10/256 , Y02P10/259
摘要： A power control system for an AC electric arc furnace. The control system includes variable reactors located intermediate a furnace power supply and arc electrodes that are height adjustable. The control system monitors operating characteristics of the furnace that are indicative of the active power consumption of the furnace and adjusts the variable reactors and the electrode height so as to minimize variations in the active power consumption. Loss of electrode arc can be predicted and countered by lowering the electrodes and decreasing the reactance of the variable reactors.

6. 发明申请

US20100001587A1 PHOTOVOLTAIC DC/DC MICRO-CONVERTER 有权
标题翻译：光伏DC / DC微转换器
公开(公告)号：US20100001587A1
公开(公告)日：2010-01-07
申请号：US12495840
申请日：2009-07-01
申请人： Leo Francis Casey , Mark George Prestero , Janos Rajda
发明人： Leo Francis Casey , Mark George Prestero , Janos Rajda
IPC分类号： H02J1/00 , H01L31/042
CPC分类号： H01L31/02021 , H02J1/102 , H02J3/383 , H02S40/32 , Y02E10/563 , Y10T307/696 , Y10T307/707
摘要： A photo-voltaic (PV) power generating system and a control system for PV array string-level control and PV modules serially-connected into strings of PV modules. The system includes plural parallel strings of serially-connected power-generating photovoltaic modules that form a PV array, DC/DC micro-converters that are coupled to a DC voltage buss and to the output of a corresponding photovoltaic module or to the output of a string of photovoltaic modules; a gating or central inverter; and a control system. The control system is structured and arranged to control and manage each string of photovoltaic modules, to ensure that power delivered by the photovoltaic power generating system is not affected by photovoltaic modules or strings of photovoltaic modules that are not operating at maximum power transfer efficiency.
摘要翻译：光伏发电系统和光伏阵列串级控制的控制系统和串联连接到光伏组件串的PV模块。该系统包括形成PV阵列的串联连接的发电光伏模块的多个并联串，耦合到DC电压总线的DC / DC微转换器以及相应的光伏模块的输出或相应的光伏模块的输出一串光伏组件; 门控或中央逆变器; 和控制系统。控制系统被构造和布置成控制和管理每串光伏模块，以确保由光伏发电系统传递的功率不受光伏模块或不以最大功率传输效率运行的光伏模块串的影响。

7. 发明授权

US07514907B2 Device, system, and method for providing a low-voltage fault ride-through for a wind generator farm 有权
标题翻译：用于为风力发电机场提供低压故障穿越的装置，系统和方法
公开(公告)号：US07514907B2
公开(公告)日：2009-04-07
申请号：US11439892
申请日：2006-05-24
申请人： Janos Rajda , Anthony William Galbraith , Colin David Schauder
发明人： Janos Rajda , Anthony William Galbraith , Colin David Schauder
IPC分类号： G05F1/70 , G05F3/00 , G05F5/00
CPC分类号： G05F1/70 , F03D9/257 , H02P9/102 , H02P2101/15 , Y02E10/72
摘要： A device, a system, and a method for preventing power-producing wind turbine generators from tripping due to the detection of a low-voltage condition on a power grid are disclosed. The disclosed device includes a resistor bank that absorbs real power and a control system that maintains the collector bus voltage above a threshold voltage level during the duration of low-voltage condition on the power grid. Collector bus voltage is maintained using gating signals that include phase delay angles to adjust the opening/closing of the switching devices.
摘要翻译：公开了一种用于防止发电风力发电机由于检测到电网上的低电压状况而跳闸的装置，系统和方法。所公开的装置包括吸收实际功率的电阻器组和在电网的低电压状态期间将集电极母线电压维持在阈值电压电平以上的控制系统。使用包括相位延迟角度的门控信号来维持集电极总线电压，以调整开关器件的开/关。

8. 发明授权

US06560128B1 Ferroresonance-suppressing static transfer switch 有权
标题翻译：铁磁谐振抑制静电转换开关
公开(公告)号：US06560128B1
公开(公告)日：2003-05-06
申请号：US09248900
申请日：1999-02-12
申请人： Janos Rajda , Shashi Dewan
发明人： Janos Rajda , Shashi Dewan
IPC分类号： H02H710
CPC分类号： H02J3/38 , H02J9/062
摘要： A static transfer switch for reducing ferroresonance in a load consisting of a first switch for connecting and disconnecting a primary power source to and from the load, and a second switch for connecting and disconnecting a secondary power source to and from the load. Each switch includes a snubber circuit connected across the respective switch. An attenuator, consisting of a resistor in series with a capacitor, is connected between the first and second switches and ground and suppresses series ferroresonance at the load by reducing the voltage applied to the load when both the first and second switches are open and power is applied to or removed from the load.
摘要翻译：一种用于降低负载中的铁磁谐振的静态转换开关，包括用于将主电源连接到负载和从负载断开的第一开关，以及用于将二次电源连接到负载和从负载断开的第二开关。每个开关包括连接在相应开关上的缓冲电路。由第一和第二开关串联的电阻器组成的衰减器被连接在第一和第二开关之间并接地，并且当第一和第二开关都断开时，通过减小施加到负载的电压来抑制负载下的串联铁磁共振，而功率是应用于或从负载中移除。

9. 发明授权

US06274851B1 Electric arc furnace controller 失效
标题翻译：电弧炉控制器
公开(公告)号：US06274851B1
公开(公告)日：2001-08-14
申请号：US09386461
申请日：1999-08-31
申请人： Joseph A. Mulcahy , Dawit Tadesse , Janos Rajda , Hassan Ali Kojori
发明人： Joseph A. Mulcahy , Dawit Tadesse , Janos Rajda , Hassan Ali Kojori
IPC分类号： H05B102
CPC分类号： H05B7/148 , H05B7/005 , Y02P10/256 , Y02P10/259
摘要： An electric arc furnace includes a container for receiving metal, an electrode spaced apart from the container, and an electrical power source coupled to the electrode and the container for generating an electrical discharge between the electrode and the container for melting the metal in the container. The arc furnace includes a flicker controller for reducing flicker induced in the power source by the electric arc furnace. The flicker controller consists of a switch electrically connected between the power source and the electrode, and a control system coupled to the switch. The switch includes a gating input for controlling a conduction interval of the switch, and the control system applies gating signals to the gating input for maintaining a magnitude of reactive current flow through the arc furnace substantially constant.
摘要翻译：电弧炉包括用于接收金属的容器，与容器间隔开的电极，以及耦合到电极和容器的电源，用于在电极和容器之间产生用于熔化容器中的金属的放电。电弧炉包括用于减少由电弧炉引起的电源闪烁的闪烁控制器。闪烁控制器由电连接在电源和电极之间的开关以及耦合到开关的控制系统组成。开关包括用于控制开关的导通间隔的门控输入，并且控制系统将门控信号施加到门控输入端，以保持通过电弧炉的无功电流的大小基本恒定。

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