能馈型交流电子负载直流电压分析及控制技术研究  

Research on the DC Voltage Analysis and Control Technique of Energy-feedback AC Electronic Load

作　　者：安巧静[1] 朱长青[1] 赵月飞[2] 严雪飞[1] 杨清熙[3] 侯立健 

机构地区：[1]军械工程学院车辆与电气工程系,河北石家庄050003 [2]军械工程学院无人机工程系,河北石家庄050003 [3]军械工程学院静电与电磁防护研究所,河北石家庄050003

出　　处：《华北电力大学学报（自然科学版）》2015年第2期15-22,共8页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(50977091);国防科技重点实验室基金项目(9140C870103120C87028)

摘　　要：能馈型交流电子负载结构为交直交两级结构,直流部分稳定是两级解耦的前提,为达到负载模拟及实时逆变并网的要求,直流电压稳定控制研究十分必要。从整体角度建模,分析了交直交电参数耦合关系以及动态功率平衡问题,根据直流电容等效电路图,着重分析直流电压波动的原理,提出了直流电压外环控制策略,并通过仿真进行了验证,结果表明该控制策略可行,对交直交系统稳定具有重要意义。AC / DC / AC as a two-stage structure system is the basic structure of power electronic load with energy feedback,and the stabilization of DC part is the premise of decoupling. In order to meet the requirements of load simulation and grid-connected inverter in real time,the research of DC voltage stability is necessary. In this paper,the coupling of AC / DC / AC parameters and the condition of dynamic power balance are analyzed. The theory of DC voltage fluctuations based on the dc capacitance equivalent circuit is emphatically narrated,so a DC voltage as outer loop control strategy is adopted in this paper,and the simulation test are verifed. The result indicates the strategy is feasible and significant for AC / DC / AC system steady.

关 键 词：交流电子负载 能量回馈 直流电压波动 逆变并网 双闭环控制 

分 类 号：TM46[电气工程—电器]