摘要
本文介绍了一种基于频率和电压下垂均流控制的无互联线并联UPS系统。采用有功和无功功率作为控制变量,从理论上分析了输出功率与两台UPS输出电压的相位差和幅值差之间的关系,给出了系统的数字控制方案,在采用TMS320F240控制的两台3kVA的UPS上进行了实验验证。
A load sharing control base on the frequency and voltage droop concept for parallel operation of two UPS system with no control interconnection lines is presented in this paper. Firstly, active power and reactive power are used as control variates, the relationship between the output power and phase and amplitude differences of output voltages of two UPS Systems are theoretically analyzed. Secondly, the digital control algorithm is presented. Finally, experiments are presented to verify the theoretical discussion by means of two 3KVA UPS system is controlled by TMS320F240.
出处
《电气自动化》
北大核心
2003年第6期23-26,共4页
Electrical Automation
基金
国家自然科学基金项目(50007004)
