陕西科技大学学报(自然科学版)
陝西科技大學學報(自然科學版)
협서과기대학학보(자연과학판)
Journal of Shaanxi University of Science and Technology (Natural Science Edition)
2015年
6期
158-161,166
,共5页
LCL型滤波器%无源阻尼方法%分裂电容方法
LCL型濾波器%無源阻尼方法%分裂電容方法
LCL형려파기%무원조니방법%분렬전용방법
LCL filter%passive damping scheme%split-capacitor scheme
针对LCL型滤波器的传统无源阻尼方法存在阻尼电阻功率损耗较大的缺点,提出了分裂电容方法。该方法将传统无源阻尼方法的电容支路分为两部分,只在其中一个电容上串联阻尼电阻。从阻尼效果和阻尼电阻的功率损耗两个方面分析了新方法。结果表明,选择合适的阻尼电阻后,采用新方法能够获得与传统方法基本相同的阻尼效果,并且能够降低阻尼电阻的功率损耗。同时应用 Matlab/Simulink对所提出的方法进行仿真,仿真结果验证了理论分析的正确性。
針對LCL型濾波器的傳統無源阻尼方法存在阻尼電阻功率損耗較大的缺點,提齣瞭分裂電容方法。該方法將傳統無源阻尼方法的電容支路分為兩部分,隻在其中一箇電容上串聯阻尼電阻。從阻尼效果和阻尼電阻的功率損耗兩箇方麵分析瞭新方法。結果錶明,選擇閤適的阻尼電阻後,採用新方法能夠穫得與傳統方法基本相同的阻尼效果,併且能夠降低阻尼電阻的功率損耗。同時應用 Matlab/Simulink對所提齣的方法進行倣真,倣真結果驗證瞭理論分析的正確性。
침대LCL형려파기적전통무원조니방법존재조니전조공솔손모교대적결점,제출료분렬전용방법。해방법장전통무원조니방법적전용지로분위량부분,지재기중일개전용상천련조니전조。종조니효과화조니전조적공솔손모량개방면분석료신방법。결과표명,선택합괄적조니전조후,채용신방법능구획득여전통방법기본상동적조니효과,병차능구강저조니전조적공솔손모。동시응용 Matlab/Simulink대소제출적방법진행방진,방진결과험증료이론분석적정학성。
There is a defect in the traditional passive damping scheme of LCL filter that the power loss of damping resistor is high .In allusion to it ,a split‐capacitor scheme is proposed . In the proposed scheme the capacitor branch of LCL filter is divided into two parts and the damping resistance is only connected to one of the two parts .The damping effect and the power loss are theoretically analyzed by using the proposed scheme .Comparison results show that selecting appropriate damping resistance almost can achieve the same damping effect as by traditional scheme and the power loss of damping resistor can be reduced .At the same time ,when using Matlab/Simulink simulation of the proposed method ,the correctness of theoretical analysis is verified by simulation results .