CAJ | 학술논문

电动汽车充电机是非线性很强的负载，接入系统会给电网带来较大的谐波污染，研究充电机的谐波治理装置对今后大规模充电站的建设具有重要意义。针对6脉波不控整流充电机的谐波分析模型，提出一种基于基波谐振原理、基波磁通补偿原理和传统无源滤波器相结合的滤波改进方法，该方法将基波谐振电路和基波单绕组变压器串联在电源与无源滤波器之间。 MATLAB/Simulink仿真结果表明，改进的滤波方法在充电站负荷较大的情况下也能使电网电流和电压波形正弦化，大大提高了传统滤波器的滤波效果。
전동기차충전궤시비선성흔강적부재，접입계통회급전망대래교대적해파오염，연구충전궤적해파치리장치대금후대규모충전참적건설구유중요의의。침대6맥파불공정류충전궤적해파분석모형，제출일충기우기파해진원리、기파자통보상원리화전통무원려파기상결합적려파개진방법，해방법장기파해진전로화기파단요조변압기천련재전원여무원려파기지간。 MATLAB/Simulink방진결과표명，개진적려파방법재충전참부하교대적정황하야능사전망전류화전압파형정현화，대대제고료전통려파기적려파효과。
As a kind of strongly nonlinear load, electric vehicle charger brings harmonic pollution to the grid when it is connected to the grid. Therefore, the study on harmonic suppression device is of great significance for future large-scale chargerconstruction. Considering the harmonic simulation model of 6-plus uncontrolled rectifier, the paper proposesa new improved filtering method, whichis based on the combination of fundamental resonance principle, fun-damental magnetic flux compensation principle and traditional passive filter. In the method, fundamental resonance circuit and fundamental single-winding transformer are connected in series between the power supply and the passive filter. MATLAB/Simulink simulation results show that the improved filtering method can achievesinusoidal grid current and grid voltage waveforms evenwhen charging station load is very high, thereforegreatly improves the filtering effect of the traditional filter.