风力机输出的机械功率与风力机转速的曲线

air=1.184;%空气密度典型值为：1.184千克/立方米25摄氏度?R=40;%直径为80米?S=pi*R*R;%S为风轮扫略面积?Cpmax=0;lamd=0;%lamd=v_rotate/v_wind?Cp=0;v_wind=3;forn=1:10v_wind=1+n;fornum=1:138lamd=lamd+0.1;lamd1=1/(1/lamd-0.035);Cp=0.5176*(116/lamd1-5)*(2.71828^(-21/lamd1))+0.0068*lamd;x1(num)=lamd;y1(num)=Cp;Cp_m(num)=Cp;ifnum1ifCp_m(num)Cp_m(num-1)Cpmax=Cp_m(num);%Cpmax为最佳风能利用系数??????????????????????x(n)=lamd*v_wind/R;endendP=0.5*air*Cp_m(num)*v_wind^3*S;x2(num)=lamd*v_wind/R;y2(num)=(P/1000);endlamd=0;ifn5plot(x2,y2);xlabel('风力机转速ω');ylabel('风力机输出的机械功率Pout/KW');title('风力机输出的机械功率与风力机转速的曲线');endholdon;%plot(x1,y1);?%xlabel('叶尖速比?λ');ylabel('风能利用系数?Cp');?%title('风力机的风能利用系数曲线');?P1=0.5*air*Cpmax*v_wind^3*S;y(n)=(P1/1000);%disp('此时风机的功率为：');?%disp(P1);?endplot(x,y);holdoff;