摘要
光伏并网发电系统能被应用于虚弱电网末梢,为减小负载的无功和谐波对电网的影响,提出将光伏并网发电与无功补偿一体化,构成光伏并网功率调节系统,以提高供电质量和减少功率损耗。分析了系统的工作模式、瞬时无功检测方法、光伏最大功率跟踪及并网功率的合成控制,以数字信号处理器DSP为主控制芯片,研制了工程化样机,并给出相应的实验结果。
Photovoltaic grid-connected system can be installed at the end of net. To decrease the effect of reactive power and harmonic current of power loads, a photovoltaic grid-connected power conditioner system is proposed, which combines PV grid-connected generate and reactive power compensation . The system can enhance the of power quality and reduce power wasting. The work mode of system, instantaneous reactive and harmonic current detecting principle, searching the maximum power point and the control algorithm of grid-net power are discussed. Some experiment results are also presented. Some experiment results are given in the prototype of 30kVA photovoltaic grid-connected power conditioner based on digital signal processor （DSP）.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2007年第2期75-79,共5页
Proceedings of the CSEE
基金
国家863高技术基金项目(2002AA513040)
教育部科学技术研究重大项目(306004)~~
关键词
光伏并网
功率调节
瞬时无功检测
最大功率跟踪
数字信号处理器
photovoltaic grid connected
power conditioner
instantaneous reactive detection
maximum power point tracking
digital singnal processor
