now, I am calculation saturation valume in flyback circuit, to inspection the trasformer if work on safety area,
calculaion formula:
Bmax=Vp*10^8/k*f*Np*Ae
Vp=90VAC k=4.44 f=main switching frequeny
Np=primary turns Ae=active area of core
please give me some advice if have any other
變壓器最大飽和磁通計算,請各位進來大蚊進來討論......
全部回复(15)
正序查看
倒序查看
现在还没有回复呢，说说你的想法
@weal
no!!Iamcalculationthesaturationinfactapplication!!toconfirmdesigningfortrasformer(coreapplicationsituation)!!
This formular is suitable for the discontinueous mode flyback converter. because the Bmax in your formular is actually the B swing(Delta B). for continueous mode should use another formular:
Bmax=Ipeak*L/(N*Ae)
Bmax=Ipeak*L/(N*Ae)
0
回复
提示
@weal
WHY!!pleasemakecorrectanswer!!!
The Volt-Second Product in a coil is equal to its flux linkage:
∫v(t)*dt=ψ=N*Φ=N*B*Ac
In this case,the voltage v(t) is a constant Vi :
∴ N*B*Ac=Vi*d*T
there, d---duty cycle on a period T.
When the converter is operating on its full load or suffering some over load,
N*Bm*Ac=Vimin*dmax*T= Vimin*Tonmax.
∴ Bm=Vimin*dmax*T= Vimin*Tonmax/N*Ac
jockey_lee: /100[第9帖] and wwwwwyyyr: /100 [第12帖] 's answer are right.
∫v(t)*dt=ψ=N*Φ=N*B*Ac
In this case,the voltage v(t) is a constant Vi :
∴ N*B*Ac=Vi*d*T
there, d---duty cycle on a period T.
When the converter is operating on its full load or suffering some over load,
N*Bm*Ac=Vimin*dmax*T= Vimin*Tonmax.
∴ Bm=Vimin*dmax*T= Vimin*Tonmax/N*Ac
jockey_lee: /100[第9帖] and wwwwwyyyr: /100 [第12帖] 's answer are right.
0
回复
提示
@劳同志
TheVolt-SecondProductinacoilisequaltoitsfluxlinkage:∫v(t)*dt=ψ=N*Φ=N*B*AcInthiscase,thevoltagev(t)isaconstantVi:∴N*B*Ac=Vi*d*Tthere,d---dutycycleonaperiodT.Whentheconverterisoperatingonitsfullloadorsufferingsomeoverload, N*Bm*Ac=Vimin*dmax*T=Vimin*Tonmax.∴Bm=Vimin*dmax*T=Vimin*Tonmax/N*Acjockey_lee:/100[第9帖]andwwwwwyyyr:/100[第12帖]'sanswerareright.
THANKS!!!
THANKS FOR ALL FRIENDS TO JOIN THIS DISCUSS!!!
LET ME MAKE MORE CLEAR!!!
THANKS FOR ALL FRIENDS TO JOIN THIS DISCUSS!!!
LET ME MAKE MORE CLEAR!!!
0
回复
提示
