摘要
在能源转型背景下,电动汽车的应用呈爆发式增长,电动车集中式充电站的需求量也随之增长。由于汽车直流充电桩的整流装置,其开关模式使系统产生谐波,同时无功功率增加,功率因数降低。针对某电动汽车充电站,传统并联电容器补偿无法解决谐波干扰,提出通过降阶广义积分原理提取指定次谐波,结合静止同步补偿器在同步坐标系下双闭环补偿控制,加入锁频环节自适应跟踪电网频率,综合补偿谐波与无功功率。通过建模分析,结果补偿系统THD指数由28.65%降至3.64%,功率因数提高至0.95以上。
In the context of energy transition,the application of electric vehicles has exploded,and the demand for centralized charging stations for electric vehicles has also increased.Due to the rectifying device of dc charging pile,the system produces harmonics,while reactive power increases and power factor decreases.On electric vehicle charging station,the traditional parallel capacitor compensation cannot solve the harmonic interference,a reduced order generalized integral principle put forward by extract specified harmonics,combined with static synchronous compensator in the synchronization system double closed loop compensation control,add lock frequency link adaptive tracking power grid frequency,the comprehensive compensation of harmonic and reactive power.Through mod eling analysis,the results verify that the THD index of the compensation system decreases from 28.65%to 3.64%,and the power factor increases to more than 0.95.
作者
黄晓伟
李宏杰
郭冉
陈思同
王安红
HUANG Xiao-wei;LI Hong-jie;GUO Ran;CHEN Si-tong;WANG An-hong(School of Electronic and Information Engineering Taiyuan University of Science and Technology,Taiyuan 030024,China;Shanxi Province Internet+3D Printing Collaborative Innovation Center,Taiyuan 030024,China)
出处
《太原科技大学学报》
2024年第3期292-298,305,共8页
Journal of Taiyuan University of Science and Technology
基金
山西省重点研发计划(201903D121117)
山西省互联网+3D打印协同创新中心项目(CiCi3DP)
山西省1331工程重点创新团队项目(2018001)。
关键词
电动汽车
无功补偿
指定次谐波
降阶广义积分器
锁频环
electric vehicles
reactive power compensation
specified harmonic
reduced order generalized integrator
frequency lock loop
