现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2015年
12期
159-162
,共4页
光伏并网系统%光伏阵列%并网逆变器%SVPWM
光伏併網繫統%光伏陣列%併網逆變器%SVPWM
광복병망계통%광복진렬%병망역변기%SVPWM
photovoltaic grid connected system%photovoltaic array%grid connection inverter%SVPWM
为了真实地模拟光伏发电并网系统,针对光伏发电并网的最大功率点追踪,给出了基于电导增量法的控制方法,提高了光伏电池阵列的工作效率。利用Boost电路实现MPPT控制,以SVPWM变换形成PWM波,在此基础上分别从光伏发电并网系统的各重要组成部分出发,建立了一套两级式三相光伏并网发电系统模型。最后,通过仿真对所搭建模型的动态性能进行验证。仿真结果表明,该模型能够真实地反映三相光伏发电并网系统的实际运行特性,具有较好的动态性能。
為瞭真實地模擬光伏髮電併網繫統,針對光伏髮電併網的最大功率點追蹤,給齣瞭基于電導增量法的控製方法,提高瞭光伏電池陣列的工作效率。利用Boost電路實現MPPT控製,以SVPWM變換形成PWM波,在此基礎上分彆從光伏髮電併網繫統的各重要組成部分齣髮,建立瞭一套兩級式三相光伏併網髮電繫統模型。最後,通過倣真對所搭建模型的動態性能進行驗證。倣真結果錶明,該模型能夠真實地反映三相光伏髮電併網繫統的實際運行特性,具有較好的動態性能。
위료진실지모의광복발전병망계통,침대광복발전병망적최대공솔점추종,급출료기우전도증량법적공제방법,제고료광복전지진렬적공작효솔。이용Boost전로실현MPPT공제,이SVPWM변환형성PWM파,재차기출상분별종광복발전병망계통적각중요조성부분출발,건립료일투량급식삼상광복병망발전계통모형。최후,통과방진대소탑건모형적동태성능진행험증。방진결과표명,해모형능구진실지반영삼상광복발전병망계통적실제운행특성,구유교호적동태성능。
A control method based on incremental conductance method is given For realistic simulation and maximum power point tracking of the photovoltaic grid?connected system. With the method,the efficiency of the photovoltaic cell array was improved and MPPT control was achieved by utilizing Boost circuit. In this method,PWM wave is formed by the transform of SVPWM. On this basis,a model of two?stage three?phase PV grid?connected system is built. The dynamic performance of the built model is verified by simulation. The simulation results show that the model is able to reflect the real operating characteris?tics of three?phase PV grid?connected system and has better dynamic performance.