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1. 发明申请

US20110199707A1 PHOTOVOLTAIC ARRAY GROUND FAULT DETECTION METHOD FOR UTILITY-SCALE GROUNDED SOLAR ELECTRIC POWER GENERATING SYSTEMS 有权
标题翻译：用于实际接地太阳能发电系统的光伏阵列接地故障检测方法
公开(公告)号：US20110199707A1
公开(公告)日：2011-08-18
申请号：US13028152
申请日：2011-02-15
申请人： HOSSEIN KAZEMI , VIGGO SELCHAU-HANSEN , BRIAN HINMAN
发明人： HOSSEIN KAZEMI , VIGGO SELCHAU-HANSEN , BRIAN HINMAN
IPC分类号： H02H3/16
CPC分类号： H02H7/20 , H02H3/33 , H02H7/1222 , Y02E10/56
摘要： Various methods and apparatus are described for a photovoltaic system. In an embodiment, a hybrid grounding circuit as well as a ground fault monitoring circuit are in the inverter circuitry with its switching devices that generate three-phase Alternating Current (AC) voltage. The three-phase AC voltage is supplied to a utility power grid interface transformer, where a primary-side common node of the Utility Power grid interface transformer is connected to Earth ground. Each inverter has 1) its own set of isolation contacts to connect as well as isolate this particular inverter from the utility grid interface transformer, and 2) control components in the ground fault monitoring circuit for controlling operation of the isolation contacts based off a presence of the ground fault detected by the ground fault monitor circuit for that inverter. The inverter circuit receives a DC voltage supplied from its own set of ungrounded Concentrated PhotoVoltaic modules.
摘要翻译：光伏系统描述了各种方法和装置。在一个实施例中，混合接地电路以及接地故障监测电路在逆变器电路中，其开关装置产生三相交流（AC）电压。三相交流电压被提供给公共电网接口变压器，其中公用电网接口变压器的初级侧公共节点连接到地面。每个逆变器有1）自己的一组隔离触点连接，并将该特定的逆变器与公用电网接口变压器隔离，以及2）接地故障监控电路中的控制组件，用于控制隔离触点的运行，由该变频器的接地故障监控电路检测到接地故障。逆变器电路接收从其自己的一组未接地的集中的PhotoVolta模块提供的直流电压。

2. 发明申请

US20120026631A1 PHOTOVOLTAIC ARRAY GROUND FAULT DETECTION IN AN UNGROUNDED SOLAR ELECTRIC POWER GENERATING SYSTEM AND TECHNIQUES TO TRANSITION ONTO AND OFF THE UTILITY GRID 审中-公开
标题翻译：无线电太阳能发电系统中的光伏阵列接地故障检测和用于实时传送的实际网格的技术
公开(公告)号：US20120026631A1
公开(公告)日：2012-02-02
申请号：US13044423
申请日：2011-03-09
申请人： HOSSEIN KAZEMI , VIGGO SELCHAU-HANSEN
发明人： HOSSEIN KAZEMI , VIGGO SELCHAU-HANSEN
IPC分类号： H02H3/00
CPC分类号： H02H3/16 , H02H7/20
摘要： In an embodiment, inverter circuitry has switching devices that generate three-phase AC voltage that is supplied to a utility power grid interface transformer. A high impedance circuit as well as a ground fault monitoring circuit couple to the inverter circuit. The high impedance circuit is configured to periodically create a path to Earth ground, and thus, completes the Earth ground electrical path back to the ground fault detection circuit. A set of isolation contacts at the AC 3-phase power output connect as well as isolate this particular inverter from the utility grid interface transformer. Control components in the ground fault monitoring circuit control the operation of the isolation contacts based off a presence of a ground fault in ungrounded solar arrays that supply DC power to this ungrounded inverter circuitry when the ground fault is detected by the ground fault monitor circuit for that ungrounded inverter.
摘要翻译：在一个实施例中，逆变器电路具有产生提供给公共电网接口变压器的三相AC电压的开关装置。高阻抗电路以及接地故障监控电路耦合到逆变器电路。高阻抗电路配置为周期性地创建到接地的路径，从而完成接地故障检测电路的接地电路。交流三相电源输出端连接一组隔离触点，并将该特定逆变器与公用电网接口变压器隔离。接地故障监控电路中的控制组件基于在接地故障检测到接地故障时未接地太阳能电池阵列中接地故障的存在而控制隔离触点的操作，该接地故障由接地故障监控电路检测到不接地逆变器。

3. 发明申请

US20110198935A1 INVERTER FOR A THREE-PHASE AC PHOTOVOLTAIC SYSTEM 有权
标题翻译：三相交流光伏系统逆变器
公开(公告)号：US20110198935A1
公开(公告)日：2011-08-18
申请号：US13028122
申请日：2011-02-15
申请人： BRIAN HINMAN , HOSSEIN KAZEMI , WAYNE MILLER
发明人： BRIAN HINMAN , HOSSEIN KAZEMI , WAYNE MILLER
IPC分类号： H02J1/12
CPC分类号： H02H7/1222 , H02H3/33 , H02H9/001 , H02J3/383 , Y02E10/563 , Y10T307/511 , Y10T307/696
摘要： Various methods and apparatus are described for a photovoltaic system. In an embodiment, pluralities of three-phase Alternating Current (AC) inverter circuits electrically connect into a common three phase AC output. Each of those inverters receives a bipolar DC voltage supplied from its own set of Concentrated PhotoVoltaic (CPV) modules.
摘要翻译：光伏系统描述了各种方法和装置。在一个实施例中，多个三相交流（AC）逆变器电路电连接到公共三相AC输出。这些逆变器中的每一个都接收从其自己的Concentrated PhotoVoltaic（CPV）模块提供的双极直流电压。

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