摘要
并网发电系统是太阳能光伏系统的发展趋势,针对光伏并网发电系统的典型特点,设计了5 k W额定功率级的光伏逆变器。采用TMS320F240为DSP核心,构成了DC-DC、DC-AC的两级式并网逆变器。通过串联多晶硅光伏电池阵列进行实验,可以实现最大功率点的跟踪,以及对反孤岛效应的控制功能。结果表明,采取基于DSP的电流跟踪控制策略,正弦电流的基波分量约占输出电流总量的99.6%,实现了与电网电压的同频率同相位。
Grid-connected system is the trend of development of solar energy photovoltaic system. According to the typical characteristics of the photovoltaic power generation system, a photovoltaic inverter of 5 k W level rated power is designed.Using TMS320F240 as the DSP core, constitutes the two stage grid-connected inverter, i.e. DC-DC and DC-AC. Through the experiment carried out by a series of polycrystalline silicon PV array, maximum power point tracking（MPPT） is realized, as well as the control function of anti-islanding effect. The results show that, based on DSP current tracking control strategy, the fundamental component of the sine-wave current is about 99.6 percentage of the total output current, which achieve the same frequency and phase with the grid voltage.
出处
《电子设计工程》
2016年第6期152-154,共3页
Electronic Design Engineering
基金
北京市教委科技计划面上项目(KM201510858004)
北京电子科技职业学院重点课题(YZKB2014008)
关键词
光伏系统
太阳能
并网逆变器
最大功率点跟踪
孤岛效应
photovoltaic system
solar energy
grid-connected inverter
maximum power point tracking
islanding effect
