公开(公告)号：EP2771752A4

公开(公告)日：2015-04-08

申请号：EP12844166

申请日：2012-10-25

申请人： SUNPOWER CORP

发明人： JOHNSON LARS ,  PETER WILLIAM B ,  JOHNSON ROBERT

IPC分类号： G05D3/12

CPC分类号： H02J1/00 ,  H02J3/1842 ,  H02J3/383 ,  H02J3/50 ,  Y02E10/563 ,  Y02E40/22 ,  Y10T307/707

摘要： A photovoltaic power plant with master-slave control architecture. The photovoltaic power plant includes slave plant controllers, with each slave plant controller controlling operation of photovoltaic inverters that convert direct current generated by solar cells to alternating current suitable for delivery to a utility power grid at a point of interconnection (POI). A master plant controller controls and coordinates the operation of the slave plant controllers. The master plant controller generates a global inverter real or reactive power setpoint, which is provided to each slave plant controller. In each slave plant controller, the global set point is processed to generate individual inverter real or reactive power setpoints that are provided to corresponding photovoltaic inverters controlled by that slave plant controller. A photovoltaic inverter generates an output based on received individual inverter setpoint to achieve a desired real power, voltage or power factor.

摘要翻译： 一个具有主从控制架构的光伏电站。 光伏发电厂包括从设备控制器，每个从属设备控制器控制光伏逆变器的操作，其将由太阳能电池产生的直流电转换成适于在互连点（POI）处输送到公用电网的交流电。 主站控制器控制和协调从站设备控制器的操作。 主站控制器产生一个全局变频器实际或无功功率设定值，它被提供给每个从站设备控制器。 在每个从站设备控制器中，处理全局设定点以产生提供给由该从站设备控制器控制的相应光伏逆变器的单个逆变器实际或无功功率设定点。 光伏逆变器基于接收到的单个逆变器设定点产生输出，以实现期望的实际功率，电压或功率因数。

公开(公告)号：EP2686933A4

公开(公告)日：2015-05-27

申请号：EP12757340

申请日：2012-02-27

申请人： SUNPOWER CORP

发明人： JOHNSON LARS ,  JOHNSON ROBERT

IPC分类号： H02J3/38 ,  H02J3/16 ,  H02J3/50

CPC分类号： H02J3/383 ,  H02J3/16 ,  H02J3/50 ,  H02M7/42 ,  Y02E10/563 ,  Y02E40/34 ,  Y10T307/707

摘要： A photovoltaic system includes solar cells and photovoltaic inverters configured to convert direct current generated by the solar cells to alternating current. Grid voltage at the point of interconnection (POI) of the photovoltaic system and the power grid is measured and compared to a setpoint. A control signal is generated based on the measured grid voltage. The control signal is provided to the photovoltaic inverters. The control signal is adjusted to cause the photovoltaic inverters to generate or absorb reactive power to respond to transient grid voltage changes.

公开(公告)号：EP2724384A4

公开(公告)日：2015-04-15

申请号：EP12805227

申请日：2012-06-12

申请人： SUNPOWER CORP

发明人： JOHNSON LARS

IPC分类号： H01L31/042 ,  G01R31/40

CPC分类号： H02S10/00 ,  G05B11/42 ,  H02J3/383 ,  H02S50/00 ,  H02S50/10 ,  Y02E10/563 ,  Y10T307/549

摘要： A photovoltaic power plant includes a photovoltaic inverter that converts direct current generated by solar cells to alternating current. The output of the photovoltaic inverter is provided to a point of interconnection to a power grid. A meter at the point of interconnection may be read to detect the output of the photovoltaic inverter at the power grid. The photovoltaic power plant includes a plant controller with a state machine. The plant controller is configured to adjust setpoints of the photovoltaic inverter to control the output of the photovoltaic power plant. The plant controller is also configured to soft start and soft stop automatic voltage regulation (AVR) of the photovoltaic power plant to prevent perturbing the AVR.