新型工业化
新型工業化
신형공업화
New Industrialization Straregy
2014年
4期
45-50,57
,共7页
肖伸平%曾钰%赵培哲
肖伸平%曾鈺%趙培哲
초신평%증옥%조배철
光伏%最大功率追踪点%干扰观测法%PSCAD
光伏%最大功率追蹤點%榦擾觀測法%PSCAD
광복%최대공솔추종점%간우관측법%PSCAD
Photovoltaic(PV)%Maximum power point tracking(MPPT)%Perturbation and observation method%Power Systems computer aided design(PSCAD)
基于光伏电池组件的电压/功率曲线特性,提出了一种能快速实现光伏电池组件MPPT的改进干扰观测方法。在考虑电网对光伏发电系统功率输出增长速率的条件下,该方法针对光伏电池组件开路电压与最大功率点电压比相对稳定的特性,在Uoc到85%Uoc之间设置大步长实现了光伏发电系统的MPPT快速粗跟踪,再在80%Uoc到85%Uoc之间减小步长实现了MPPT动态精确跟踪。此方法克服了干扰观测法跟踪速度和跟踪精度的矛盾。通过PSCAD仿真模型验证了该方法的有效性。
基于光伏電池組件的電壓/功率麯線特性,提齣瞭一種能快速實現光伏電池組件MPPT的改進榦擾觀測方法。在攷慮電網對光伏髮電繫統功率輸齣增長速率的條件下,該方法針對光伏電池組件開路電壓與最大功率點電壓比相對穩定的特性,在Uoc到85%Uoc之間設置大步長實現瞭光伏髮電繫統的MPPT快速粗跟蹤,再在80%Uoc到85%Uoc之間減小步長實現瞭MPPT動態精確跟蹤。此方法剋服瞭榦擾觀測法跟蹤速度和跟蹤精度的矛盾。通過PSCAD倣真模型驗證瞭該方法的有效性。
기우광복전지조건적전압/공솔곡선특성,제출료일충능쾌속실현광복전지조건MPPT적개진간우관측방법。재고필전망대광복발전계통공솔수출증장속솔적조건하,해방법침대광복전지조건개로전압여최대공솔점전압비상대은정적특성,재Uoc도85%Uoc지간설치대보장실현료광복발전계통적MPPT쾌속조근종,재재80%Uoc도85%Uoc지간감소보장실현료MPPT동태정학근종。차방법극복료간우관측법근종속도화근종정도적모순。통과PSCAD방진모형험증료해방법적유효성。
Based on the characteristics of the voltage and power of photovoltaic cells,an improved perturbation and observation method which achieves the maximum power point quickly is investigated in this paper. This method completes the rough maximum power point tracking(MPPT)by pre-setting the tracking steps from Uoc to 85%Uoc and dynamic tracking by reducing the step size from 80%Uoc to 85%Uoc. Compared with the traditional methods,simulation results show that this new method reaches the maximum power point in a shorter time with a more accurate maximum power and can overcome the contradiction between the speed and precision in MPPT.