一种基于氮化镓功率器件和超级电容的台区融合终端电源系统设计  

Design of a Substation Integrated Terminal Power Supply System Based on Gallium Nitride Power Devices and Supercapacitors

作　　者：马胜国 赵玉珂 古展基 黄康生 陈文 曹才具 占兆武 Ma Shengguo;Zhao Yuke;Gu Zhanji;Huang Kangsheng;Chen Wen;Cao Caiju;Zhan Zhaowu(China Gridcom Co.,Ltd.,Shenzhen,Guangdong 518109,China)

机构地区：[1]深圳市国电科技通信有限公司,广东深圳518109

出　　处：《机电工程技术》2024年第4期293-296,共4页Mechanical & Electrical Engineering Technology

基　　金：深圳市国电科技通信有限公司科技项目(546808220007)。

摘　　要：传统的配电终端电源系统由主电源模块和后备电源模块组成。主电源模块普遍采用基于硅基功率器件的开关电源,功率开关器件损耗较大,温升明显。后备电源采用电池组或者大电容组,面临寿命短、功率密度低、受温度影响的放电性能和受限制的充放电电流等问题。为了解决这个问题,提出一种基于氮化镓功率器件和超级电容的台区融合终端电源系统,设计了包括主、后备电源的整体电路架构。在主电源侧,提出了适用于配电台区场景,基于氮化镓功率器件的功率开关管的额定电压电流的选型方法,基于Cascode级联型氮化镓功率器件的驱动电路设计方法;在后备电源侧,提出了后备电源工作电压、容量设计方法。最后,开发出一款基于上述关键技术的电源系统,并采用电能质量测试仪和数字录波器搭建试验环境,对电源系统进行输出稳定性、能效、主后备电源模块切换特性进行试验。试验结果表明,所设计的电源系统在异常工况下,仍具有电压稳定输出和高转换效率特性,有一定工程实用性。The traditional distribution terminal power system consists of a main power module and a backup power module.The main power module commonly adopts a silicon-based power device based switching power supply,which has significant loss and temperature rise.The backup power supply adopts battery packs or large capacitor banks,which face problems such as short lifespan,low power density,discharge performance affected by temperature,and limited charging and discharging current.To address this issue,a power supply system for substation integrated terminal based on gallium nitride power devices and supercapacitors is proposed,and an overall circuit architecture including main and backup power supplies is designed.On the main power supply side,a type selection method for the rated voltage and current of power switching tubes based on gallium nitride power devices suitable for distribution station scenarios is proposed,and a driving circuit design method based on cascode cascaded gallium nitride power devices is proposed.On the backup power supply side,a design method for the working voltage and capacity of the backup power supply is proposed.Finally,a power supply system based on the key technologies mentioned above is developed,and an experimental environment is built using a power quality tester and a digital wave recorder to test the output stability,energy efficiency,and switching characteristics of the main and backup power supply modules of the power supply system.The experimental results show that the designed power supply system has stable voltage output function and conversion efficiency under abnormal operating conditions and has certain engineering practicality.

关 键 词：氮化镓 功率器件 融合终端 配电台区 电源 

分 类 号：TM91[电气工程—电力电子与电力传动]