公开(公告)号：US20120230066A1

公开(公告)日：2012-09-13

申请号：US13041585

申请日：2011-03-07

申请人： Ching-Ming LAI ,  Ching-Tsai Pan ,  Chih-Hsing Fang ,  Wen-Wei Chan ,  Ming-Chieh Cheng

发明人： Ching-Ming LAI ,  Ching-Tsai Pan ,  Chih-Hsing Fang ,  Wen-Wei Chan ,  Ming-Chieh Cheng

IPC分类号： H02M5/45

CPC分类号： H02M7/4807 ,  H02J3/385 ,  H02M3/337 ,  Y02E10/58

摘要： A photovoltaic powered system and an alternating current (AC) module thereof are disclosed. The photovoltaic powered system provides a direct current (DC) power through a photovoltaic module and converts the DC power into an AC power, which is grid-connected to an AC utility power. The AC module of the photovoltaic powered system produces a continuous quasi-sinusoidal current and the quasi-sinusoidal current is converted into a sinusoidal current. The high-frequency harmonic components of the sinusoidal current are filtered to produce a sinusoidal output current in phase with the AC utility power, thus realizing the maximum power point tracking (MPPT) of the photovoltaic module and feeding unity-power-factor power into the AC utility power.

摘要翻译： 公开了一种光伏动力系统及其交流（AC）模块。 光伏电力系统通过光伏模块提供直流（DC）电力，并将直流电力转换为与电力公司电力并网的交流电。 光伏电力系统的AC模块产生连续准正弦电流，准正弦电流转换为正弦电流。 对正弦电流的高频谐波分量进行滤波以产生与交流电力同相的正弦输出电流，从而实现光伏模块的最大功率点跟踪（MPPT），并将单位功率因数功率馈送到 交流电源。