负载可调的变压器式电抗器控制系统的设计  

The Design of Control System for the Reactor of Transformer Type with Controllable Load

作　　者：林泽科[1] 刘和平[1] 江渝[1] 郑群英[1] 

机构地区：[1]重庆大学,重庆400044

出　　处：《电力电子技术》2010年第8期71-74,共4页Power Electronics

基　　金：国家自然科学基金资助项目(50777066)~~

摘　　要：负载可调的变压器式电抗器因其较好的特性而具有广泛的应用前景。但有效控制是实现其功能的基础,逆变桥直流侧的电容电压对电抗器的性能也有较大影响。提出了基波分量的提取模型,能实时地提取初级电压和电流的基波分量,进而实现电抗器电感的在线监测。在线测量的电感作为次级电流同相分量的调节依据,因此在无需测量变压器本体参数的情况下控制器能有效地控制电抗器的电感。分析了次级电流垂直分量与电抗器性能的关系,提出了直流侧电容电压的滞环控制方式。在设计的控制系统中,次级电流的同相分量和垂直分量均为基波电流分量,这样能减小电抗器初级电流的谐波分量对电抗器的性能影响。最后通过实验证明该控制器能有效、快速地控制电抗器的电感以及直流侧的电容电压。The reactor of transformer type with controllable load（RTCL）may have a good application in power electronic field because of its better characteristic.However,RTCL should be controlled effectively during the period of its operation and the performance of the reactor depends on the voltage of capacitor in the converter greatly.The fundamental component filter is used to filter the fundament components of primary current and voltage of the transformer.So the inductance of the reactor can be measured on-line.Without the transformer parameters,the inductance can be controlled exactly because the component of the secondary current in phase with the primary current is adjusted according to the measured inductance.The voltage of the capacitor can be controlled by adjusting the component of the secondary current that is vertical to the primary current because the component effects on the voltage of the capacitor in the converter.However,the component of secondary current also effects on the performance of the reactor.The hysteresis controller can adjust the voltage of capacitor effectively.At the same time,the effect of the current component on the performance of the reactor may be decreased in great.The filter model is verified by the simulation.The controller of the reactor also can control the inductance of the reactor and the voltage of the capacitor effectively in the experiment.

关 键 词：可调电抗器 基波提取模型 在线控制电感 滞环控制 

分 类 号：TM55[电气工程—电器]