摘要
统一电能质量调节器(UPQC)的建模一般将串联单元与并联单元分开建模,并且将串联变压器理想化,也较少有人分析UPQC的串联单元与并联单元之间的相互作用.文中采用等效的变压器模型建立集串联单元、并联单元于一体的精确数学模型,分析串联变换器与并联变换器的相互作用关系,获得UPQC的串联单元、并联单元之间的相互作用机理,进而提出一种基于单位功率因数检测法(UPF)的UPQC协调控制方法.仿真与实验结果表明,所提方法可使UPQC获得较好的补偿效果,从而验证了UPQC数学模型和串联并联相互作用机理的正确性.
In the modeling process of a unified power quality conditioner( UPQC),a series unit model and a parallel unit model are separately constructed in general,and an idealized series transformer is applied. In addition,the interaction between the series unit and the parallel unit has been rarely analyzed. In this paper,a precise mathematical model of the UPQC is constructed by using an equivalent transformer model,which integrates the series unit with the parallel unit. Then,the interaction between a series inverter and a parallel inverter is analyzed,and the corresponding interaction mechanism is obtained. Furthermore,a coordinate control method of the UPQC is proposed based on the unity power factor( UPF) detection method. Simulation and experimental results prove that the proposed method can help the UPQC achieve a better compensation effect,thus verifying the correctness of the constructed mathematical model and the obtained interaction mechanism.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2017年第10期62-70,共9页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(51577074)
中国南方电网有限责任公司科技项目(GDKJXM00000015)~~
关键词
统一电能质量调节器
变压器等效模型
精确数学建模
单位功率因数法
协调控制
unified power quality conditioner
equivalent transformer model
precise modeling
unity power factor detection method
coordinated control
