全数字滞环电流控制可控电流源研究  

Research on Full-Digital Hysteresis Current Controlled Controllable Current Source

作　　者：单任仲[1] 沈沉[1] 陈来军[1] 刘锋[1] 黄秀琼[2] 

机构地区：[1]清华大学电机工程与应用电子技术系,北京市海淀区100084 [2]广西电网公司,广西壮族自治区南宁市530023

出　　处：《电网技术》2012年第12期112-118,共7页Power System Technology

基　　金：国家863高技术基金项目(2012AA050217);中国南方电网公司重点科研项目(KGX2011006)的资助~~

摘　　要：提出了一种基于现场可编程门阵列(field-programm-able gate array,FPGA)控制的全数字滞环电流控制型可控电流扰动源,选取单相全桥拓扑作为可控电流源的主电路结构。对两态滞环和三态滞环电流控制进行了仿真分析和对比,利用PSCAD软件中的自定义模块,采用Fortran语言对2种不同控制策略进行编程实现,仿真结果表明两态滞环电流控制策略更加适合于可控电流源。最后设计制作了一台原理样机,利用FPGA控制器实现了对电流源的控制,采用VHDL语言实现滞环电流控制,实验结果表明滞环电流控制技术对可控电流源的实现是有效的。Based on field-programmable gate array （FPGA）, a full-digital hysteresis current controlled controllable current disturbance source, in which the single-phase full-bridge topology is chosen as the main circuit of the controllable current source, is proposed. Simulation analysis of bi-level and tri-level hysteresis current control is performed and simulation results are compared. Utilizing self-defined module in PSCAD software two different control strategies are programmed by Fortran language, and simulation results of the two control strategies show that the bi-level hysteresis current control is more suitable to controllable current source. Finally, a principle prototype is designed and made, and then the control of current source is implemented by FPGA controller and the hysteresis current control is implemented by VHDL programming. Experimental results show that the hysteresis current control technique is effective for the implementation of controllable current source.

关 键 词：电能质量 电流源 滞环电流控制 现场可编程门 阵列 

分 类 号：TM76[电气工程—电力系统及自动化]