A line interfaced inverter with active control of the output current waveform
A line interfaced inverter with active control of the output current waveform
复制标题
具有输出电流波形主动控制功能的线路接口逆变器
DOI：
10.1109/pesc.1980.7089454
复制
发表时间：
1980
期刊：
影响因子：
--
通讯作者：
M. Schlecht
中科院分区：
文献类型：
--
作者：
M. Schlecht
介绍了一种用于光伏发电系统的线接口逆变器。该逆变器采用高频直流斩波器对输出电流进行整形，提供单位功率因数操作，并使输出滤波器的尺寸最小化。太阳能电池阵列与公用事业的隔离是通过高频Transformer实现的，从而消除了对大型60 Hz磁性元件的需要。分析功率电路的动态以确定输出电流控制环路的适当补偿。该分析表明，需要一个小回路来稳定电源电路，并且系统响应在60 Hz周期内变化。电源电路/控制系统的奇偶性仿真进行验证这一分析。该仿真的结果，并从测试逆变器的波形进行比较。适当加载光伏阵列与线接口逆变器所需的特殊考虑进行了讨论。
A line interfaced inverter for photovoltaic systems is presented. This inverter employs a high frequency dc-chopper for shaping the output current, providing unity power factor operation and minimizing the size of the output filter. The isolation of the solar array from the utility is accomplished with a high frequency transformer, eliminating the need for large, 60 Hz magnetics. The dynamics of the power circuit are analyzed to determine proper compensation of the output current control loop. This analysis shows that a minor loop is required to stabilize the power circuit and that system response varies during the 60 Hz cycle. A Parity Simulation of the power circuit/control system is performed to verify this analysis. The results of this simulation are presented and compared to waveforms from a test inverter. The special considerations required for properly loading a photovoltaic array with a line interfaced inverter are discussed.