变流负荷供电线路电压暂降的治理研究  

Voltage Sag Governance for Load Power Converter Line

作　　者：王易平[1] 

机构地区：[1]西安铁路职业技术学院,陕西西安710014

出　　处：《现代电子技术》2011年第12期148-151,共4页Modern Electronics Technique

基　　金：科技部中小企业技术创新基金项目(08C2622601562)

摘　　要：以变流装置驱动的敏感负荷对供电质量要求较高,供电电压质量中存在的电压暂降,可造成调速电机群停事故,所带来的经济损失常在数以百万元以上。结合某拉丝生产工艺线治理电压暂降,消除生产隐患的需求研制出一种采用分相补偿结构,分相控制,三组逆变单元相互独立运行的动态电压恢复器。研制过程中对此设备主电路构成、参数计算、控制方法等方面进行了研究和探讨,通过现场运行验证了设计的正确性。The supply quality is critically required for the sensitive load driven by converter devices.The voltage sag existing in power supply line may make the frequency conversion motors stop,which often causes economic loss by millions of dollars.A dynamic voltage restorer was developed in combination with the governing experience for voltage sag of a wire drawing production line and the requirement of eliminating the hidden danger.The restorer adopts a split-phase compensation structure to carry out split-phase control and mutual independence operation mode of three inverter modules.The main circuit structure,parameter calculation and control method were studied and discussed in the development process of this equipment.

关 键 词：动态电压恢复器 电压暂降 DVR IGBT 逆变器 

分 类 号：TN911-34[电子电信—通信与信息系统] TP23[电子电信—信息与通信工程]