摘要
为了解决全数字化UPS并联系统中的各模块存在同步控制精度受限制的问题,文章提出了一种基于再调制SPWM的同步控制策略,并详细分析了其调节精度和谐波特性。仿真和实验证明,该策略实现简单,可有效地提高并联UPS系统的同步控制精度,较好地抑制环流,保证了并联UPS系统的稳定运行。
Considering the limit of the synchronization control precision in the parallel system of fully digital UPS, this paper proposed a synchronization control strategy based on SPWM re-modulation, and analyzed the control precision and harmonics of the technology. Simulation and experimental results are included to show that this method can improve the synchronization control precision, suppress the circulating current well and insure the stability of parallel UPS system.
出处
《电气传动》
北大核心
2004年第2期30-34,共5页
Electric Drive
基金
国家自然科学基金项目(50007004)
