对于电感器，如选用金属磁粉芯，就需要面对磁导率的选择问题。现在以一个22uH@3A 的设计理论计算下选择不同磁导率的区别1，输入条件 磁芯KS068特性
AE 0.232104
-⋅:=Le 4.14:=Ve 0.96:=AL_2619109-⋅:=
I 3
:=ΔI 0.6
:=Fsw 300
:=AL_6043109-⋅:=AL_7553109-⋅:=AL_906410
9-⋅:=AL_12589109
-⋅:=D 0.7:=2计算圈数,
N_choose2635
:=
N_choose6024木盒制作
:=
N_choose7523
:=
N_choose9021
:=
3核算设计
,
L0_26AL_26N_choose262
⋅ 2.32810
5
-⨯=:=
L0_60AL_60N_choose602⋅ 2.47710
5
-⨯=:=
L0_75AL_75N_choose752
⋅ 2.80410
5
-⨯=:=
L0_90AL_90N_choose902
⋅ 2.82210
5
-⨯=:=
气门摇臂L0_125AL_125N_choose1252⋅ 2.88410
5
-⨯=:=
结论：选用不同的磁导率，通过绕制不同的圈数，都可以满足电性能要求
4，计算漆包线损耗MLT 24.63:=
P_cu_26I 2
R_26⋅0.015
=:=
P_cu_60I 2
R_60⋅0.01
=:=
P_cu_75I 2R_75⋅9.88410
3
-⨯=:=
P_cu_90I 2R_90⋅9.02410
3
-⨯=:=
P_cu_125I 2R_125⋅7.73510
3
-⨯=:=
P_cv60ΔB_6010⋅2⎛ ⎝⎫
生物化粪池⎪
⎭
2.225
4.584Fsw ⋅0.0238Fsw
新风控制系统
1.966
+(
)⋅27.301
=:=P_core60P_cv60Ve ⋅103
-⋅0.026=:=P_60P_core60P_cu_60+0.037
=:=
P_core75P_cv75Ve ⋅103
-⋅0.029=:=P_75P_core75P_cu_75+0.039
=:=
P_core90P_cv90Ve ⋅103
马胶配方的大全
-⋅0.035=:=P_90P_core90P_cu_90+0.044
=:=
P_core125P_cv125Ve ⋅103
-⋅0.05=:=P_125P_core125P_cu_125+0.057
=:=6，设计总结
22uH@3A 100KHz 的应用条件，相关参数对比如下
磁芯
圈数L_0A(uH)L_3A(uH)P_cu(W)P_core(W)
P(W)KS068-263523.322.580.0150.0050.02KS068-602424.722.970.010.00550.0155KS068-752328.124.610.00980.00610.0159KS068-902128.224.420.00910.00740.0165KS068-1251828.824.140.00770.010.0177
22uH@3A 200KHz 的应用条件，相关参数对比如下
磁芯圈数L_0A(uH)L_3A(uH)P_cu(W)P_core(W)
不用充电的手电筒P(W)KS068-263523.322.580.0150.0140.029KS068-602424.722.970.010.0140.024KS068-752328.124.610.00980.0160.0258KS068-902128.224.420.00910.0190.0281KS068-1251828.824.140.00770.0270.0347
22uH@3A 300KHz 的应用条件，相关参数对比如下
磁芯圈数L_0A(uH)L_3A(uH)P_cu(W)P_core(W)
P(W)KS068-263523.322.580.0150.0270.042KS068-602424.722.970.010.0260.036KS068-752328.124.610.00980.0290.0388KS068-902128.224.420.00910.0350.0441KS068-1251828.824.140.00770.050.0577
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