终端无功补偿与自适应电容调节技术  

Terminal Reactive Power Compensation and Adaptive Capacitance Adjustment Technology

作　　者：毛书凡 MAO Shufan(Engineering Training Center,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]天津理工大学工程训练中心,天津300384

出　　处：《电气传动》2022年第10期32-36,共5页Electric Drive

基　　金：天津市高等学校国家级大学生创新创业训练计划项目(201410060012)。

摘　　要：通过阐述自适应电容调节技术暨控制电容器充放电电压原理,提出了对终端负载功率因数的自动补偿新方法。利用自关断器件的可关断性,将反向并联二极管的两只自关断器件组成的开关电路,通过逻辑驱动电路、脉宽调制电路、零点检测电路和功率因数检测电路,控制开关电路内自关断器件的通断,以控制补偿电容器的充放电电压的高低,进而控制了电容器补偿电流的大小,等效实现了可调节电容器的功能,并对负载的功率因数补偿进行自动控制。对电路的原理、工作过程和主要器件参数的选择,通过实验检测数据进行了分析和阐述。用该方法制造的自关断器件功率因数自动补偿控制装置,实现了无电容器组投切,而且具有结构简单、体积小、效率高等特点,对可变负载用电设备进行现场随机功率因数补偿。An automatic compensation method was presented based on adaptive capacitance regulation technology and the principle of controlling capacitor charging and discharging voltage.Based on the turn off ability of the self-turn off device,a switch circuit composed of two self-turning off devices connected in reverse parallel with diodes was connected in reverse parallel.Through the logic drive circuit,pulse width modulation circuit,zero point detection circuit and power factor detection circuit,the on-off of the self-turning off device in the switch circuit was controlled to control the charging and discharging voltage of the compensation capacitor,and then the capacitor compensation current was controlled.It was equivalent to realize the function of the adjustable capacitor,and the power factor compensation of the load was automatically controlled.The principle of the circuit,the working process,and the selection of the main device parameters were analyzed and elaborated though experimental data.The power factor automatic compensation control device of the self-turning off device manufactured by this method has the characteristics of simple structure,small volume and high efficiency,and can automatically carry out random power factor compensation for the electric load on site.

关 键 词：电容器 自动补偿 自关断器件 零点开关 

分 类 号：TM28[一般工业技术—材料科学与工程]