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公开(公告)号：US10211625B2
公开(公告)日：2019-02-19
申请号：US14958699
申请日：2015-12-03
申请人： SunPower Corporation
发明人： Seshadri Sivakumar , Jiyong Lian , Venkat Reddy Konala , David Barr , Priyantha Sirisooriya , Jacqueline Ahmad , Jason Spokes
摘要： Arc flash mitigation devices are employed to protect personnel during maintenance of photovoltaic inverters. During normal operation, an alternating current (AC) output of a photovoltaic inverter is coupled to a low voltage winding of a step up transformer through a bus-bar (e.g., an electrically conductive interconnect), which has higher current rating than a fuse. During maintenance, the bus-bar is replaced with the fuse. The fuse may be employed in conjunction with a switch. The switch may be a disconnect switch that places the bus-bar in parallel with the fuse during normal operation, and decouples the bus-bar from the fuse during maintenance. The switch may also be a transfer switch that places either the bus-bar or the fuse in series with the AC output of the photovoltaic inverter and the low voltage winding of the step up transformer.
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公开(公告)号：US09240682B2
公开(公告)日：2016-01-19
申请号：US13622270
申请日：2012-09-18
申请人： SUNPOWER CORPORATION
发明人： Seshadri Sivakumar , Jiyong Lian , Venkat Reddy Konala , David Barr , Priyantha Sirisooriya , Jacqueline Ahmad , Jason Spokes
CPC分类号： H02H7/122 , H01L31/02021 , H02J3/383 , H02M7/00 , H02S40/36 , Y02E10/50 , Y02E10/563
摘要： Arc flash mitigation devices are employed to protect personnel during maintenance of photovoltaic inverters. During normal operation, an alternating current (AC) output of a photovoltaic inverter is coupled to a low voltage winding of a step up transformer through a bus-bar (e.g., an electrically conductive interconnect), which has higher current rating than a fuse. During maintenance, the bus-bar is replaced with the fuse. The fuse may be employed in conjunction with a switch. The switch may be a disconnect switch that places the bus-bar in parallel with the fuse during normal operation, and decouples the bus-bar from the fuse during maintenance. The switch may also be a transfer switch that places either the bus-bar or the fuse in series with the AC output of the photovoltaic inverter and the low voltage winding of the step up transformer.
摘要翻译： 在光伏逆变器的维护期间，采用弧光减光装置来保护人员。 在正常操作期间，光伏逆变器的交流（AC）输出通过总线（例如导电互连）耦合到升压变压器的低压绕组，该母线具有比熔断器更高的额定电流。 保养期间，母线更换为保险丝。 保险丝可以与开关结合使用。 开关可以是在正常操作期间将母线与保险丝并联的断开开关，并且在维护期间将汇流条与保险丝分离。 开关也可以是一个转接开关，它将汇流条或保险丝与光伏逆变器的交流输出和升压变压器的低压绕组串联。
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公开(公告)号：US09912161B2
公开(公告)日：2018-03-06
申请号：US15160882
申请日：2016-05-20
申请人： SunPower Corporation
发明人： Seshadri Sivakumar , Jiyong Lian
摘要： A photovoltaic power plant includes solar cells and inverters that convert direct current generated by the solar cells to alternating current. The reactive powers generated by the inverters are based on a reactive power generated by a virtual inverter. The virtual inverter has an equivalent impedance representing the impedances of the inverters in the photovoltaic power plant. The reactive power setpoints of the inverters may be received from a local interpreter. The local interpreter may generate the reactive power setpoints from a global reactive power setpoint generated by a grid controller.
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