能量回馈型电子负载DC/AC并网变流器  

Energy Feedback Type Electronic Load DC/AC Grid-connected Converter

作　　者：张江涛 何晋 杨观赐 何玲[3] ZHANG Jiang-tao;HE Jin;YANG Guan-ci;HE Ling(Guizhou University,Guiyang 550025,China;不详)

机构地区：[1]贵州大学,机械工程学院,贵州贵阳550025 [2]振华研究院贵阳有限公司,贵州贵阳550025 [3]贵州大学,现代制造技术教育部重点实验室,贵州贵阳550025

出　　处：《电力电子技术》2024年第8期20-25,共6页Power Electronics

基　　金：贵州省科技计划(黔科合平台人才[2020]6007-2,黔科合支撑[2023]一般124)。

摘　　要：为实现负载能量回馈,完成负载和电源间可靠和高效的电能回收,构建了能量回馈型电子负载的DC/AC并网变流器硬件电路及其控制算法。首先设计了包含功率因数校正(PFC)升压模块、DC/DC隔离模块、DC/AC转换模块和输出滤波器模块在内的DC/AC并网变流器硬件电路,然后建立了DC/AC并网变流器级联控制模型,随后提出了包含同步锁相环、电流内环和电压外环在内的DC/AC并网变流器PID控制策略,以实现交流电子负载中的能量回馈。最后,研制并测试了能量回馈型电子负载的DC/AC并网变流器,测试结果表明所研制设备能实现低总谐波畸变率(THD)并网,能量回收效率达到95%。In order to realize load energy feedback and reliable and efficient energy recovery between load and power supply,a DC/AC grid-connected converter hardware circuit with energy feedback type electronic load and its control algorithm are constructed.Firstly,the hardware circuit of a DC/AC grid-connected converter is designed,which in-cludes a power factor correction(PFC)Boost module,a DC/DC isolation module,a DC/AC conversion module and an output filter module.Then,the cascade control model of the DC/AC grid-connected converter is established.Next,a PID control strategy for the DC/AC grid-connected converter with a synchronous phase-locked loop,current inner loop,voltage outer loop is proposed to achieve energy feedback in AC electronic load.Finally,a DC/AC grid-connected converter with an energy feedback type electronic load is developed and tested.The test results demonstrate that the device achieves low total harmonic distortion(THD)grid-connected function and it exhibits an energy recovery effici-ency up to 95%.

关 键 词：变流器 能量回馈 电子负载 

分 类 号：TM46[电气工程—电器]