⌫⌦
⌫
⌫ ⌫
⌫
⌫
⌦
⌫
⌦
⌫
⌦⌫
⌫
⌫
⌫⌫
⌫⌦
☺ ⌫
⌦⌫⌫
⌫
⌫ ⌦
⌦
⌫
⌫⌦ ⌫
⌫
⌫⌫
⌫
⌫⌫ ⌫
⌫
⌫ ⌫
⌫
⌫
⌫
⌫
⌫⌫⌫ ⌫
⌫⌫
⌫
⌫
☺
⌫
⌫
⌫ ⌫
⌫
∑∞
=
+ +
=
1
0 ( cos sin )
) (
n
n
n n t b n t
a a
t
f ω ω
⌫
⌫
⌧ ⌧
⌫
⌫
1 2
2
THD I
I
N
n n i
∑=
=
∑=
= N
n n
rms I
I
1
2
2
1 1 ( i)
rms I THD
I = +
∑
∑
∑
=
=
= =
N
n n N
n n N
n
n n n
I V
I V PF
1 2 1
2 1
cosθ
⌧
rms
rms i
V I
I THD THD
1 2
2. 1 ( )
) ( 1
1 =
+
+
⌫⌫
⌫⌫
⌫⌫
⌧
⌫ ⌫ ⌫
⌦⌫
⌫ ⌫
⌦⌫
⌫⌦ ⌫ ⌫ ⌦
⌫ ⌫
⌫ ⌫
⌫ ⌫
⌫
⌫⌫⌫
⌫
⌫ ⌫⌫⌦
⌫ ⌫
⌫
⌫ ⌫
⌫ ⌫⌫
μF μF μF
Ω Ω Ω
⌫ ⌫⌫
μF μF μF
Ω Ω Ω
⌫
⌫
⌫
⌫
⌦
⌦⌫⌫ ⌫
⌫ ⌦
⌫ ⌫
⌫
⌫⌫
⌫
⌫
⌫ ⌫
⌦⌫⌫
⌫⌫⌫⌫
⌫⌫⌫
⌫ ⌫⌫⌫
☺
☺
☺
⌦ ⌫
⌫
⌫
⌫
⌫ ⌫ ⌫⌦