MPPtrackIref.m.txt
上传用户:liuztt
上传日期:2019-06-09
资源大小:15k
文件大小:1k
- % ECEN2060 DM 2/19/08
- % Simple MPP "perturb and observe" tracking algorithm
- % using Boost DC-DC input current Iref as the control variable
- % Pold, Iref and Increment are initialized in InitializeMPPtrackIref.m
- %
- % Input: power P to be maximized
- % Output: reference current
- function y = MPPtrackIref(P)
- global Pold;
- global Iref;
- global Increment;
- IrefH = 5; % upper limit for the reference current
- IrefL = 0; % lower limit for the reference current
- DeltaI = 0.02; % reference current increment
- if (P < Pold)
- Increment = -Increment; % change direction if P decreased
- end
- % increment current reference
- Iref=Iref+Increment*DeltaI;
- % check for upper limit
- if (Iref > IrefH)
- Iref = IrefH;
- end
- % check for lower limit
- if (Iref < IrefL)
- Iref = IrefL;
- end
- % save power value
- Pold = P;
- % output current reference
- y = Iref;