输出电压恒定的电力电子变压器仿真  

SIMULATION STUDY OF A POWER ELECTRONICS TRANSFORMER WITH CONSTANT OUTPUT VOLTAGE

作　　者：赵剑锋[1] 

机构地区：[1]东南大学电气工程系,江苏省南京市210096

出　　处：《电力系统自动化》2003年第18期30-33,46,共5页Automation of Electric Power Systems

基　　金：国家自然科学基金(50207002)

摘　　要：介绍了电力电子变压器的优点、目前的研究状况;指出了用电力电子变压器解决电能质量问题是今后的发展趋势;着重讨论了电力电子变压器的工作原理,推导了高频变压器中的磁链关系式,比较了采用基于有效值和瞬时控制的电力电子变压器的动态响应,并用仿真验证了理论推导的正确性和所采用的控制策略的有效性。结果表明,电力电子变压器体积小、重量轻,不但可以实现电能传输、电压隔离、匹配等功能,还能抑制电压跌落、上升和间变等动态电能质量对输出电压的影响,是建设“绿色电网”、“数字电网”的关键设备之一,对其进行研制和使用可以取得巨大的经济和社会效益。The advantages and research status of power electronics transformer (PET) are reviewed. It is indicated that using PET to improve power quality is the trend of development in this field. Operation principles are mainly discussed and flux relationship of high frequency transformer is derived. Dynamic responses of root mean square control and instantaneous control based PET are compared. The correctness of theory and effectiveness of control strategy are validated by simulation. The results show that PET can not only realize the functions of energy conversion and isolation, but also prevent from dynamic power quality problems infecting output voltage.

关 键 词：电力电子变压器 电能质量 电压跌落 电压上升 电压闪变 

分 类 号：TM41[电气工程—电器]