摘要
通过公共直流母线集成可再生能源发电单元和储能设备等的混合供能系统,可以有效提高分布式电源的利用率和控制灵活性。该文针对包含锂电池、超级电容器及光伏的混合供能系统,介绍了该系统的2种基本运行模式及直流母线电压控制方式,并对不同运行模式下暂态时直流母线电压冲击产生的机理进行了理论和实验分析,提出了分别采用死区补偿及稳态占空比控制信号补偿等解决措施。在基于30 kVA双级式变流器的混合供能系统实验平台中验证了该文所提方法的有效性。
The hybrid power supply system with its renewable energy generation units and energy storage devices integrated through a common DC bus can effectively improve the utilization and control flexibility of distributed generations. In this paper, a hybrid system containing lithium battery energy storage system, ultra-capacitors and PV was considered. After a brief description of two basic operation modes and DC-bus voltage control strategies of the system, the mechanism of the DC bus voltage transient impact in different Control mode had been analysed via theoretical and experimental methods. Consequently, the solutions such as dead time compensation and the steady state duty cycle control signal compensation had been proposed, which eventually validated on the hybrid system based on a 30 kVA two-stage power converter.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2012年第25期60-69,11,共10页
Proceedings of the CSEE
基金
国家重点基础研究发展计划项目(973项目)(2009CB219700)
国家自然科学基金项目(50837001)~~
关键词
双级式变流器
混合供能系统
直流母线控制
死区补偿
爬坡时间
two-stage power converter
hybrid powersupply system
DC bus voltage control
dead-timecompensation
climbing time
