PFC????

1
PFC????
????????
???
2
AC/DC?????????
3
??????????
(1)?????????
?????
(2)??????
(3)????????
(4)??????, ???????
THD -Total Harmonic Distortion
???
4
??Boost????PFC??
??????

????? ??????
????????? ?????,PF?1?
???? ?????
?????????, ????????0?
5
???????
???Boost ??????????? ??,???????????????? ?
?,????????,??????? ????Boost???????????
6
Boost PFC????
7
BOOST PFC????CCM
8
BOOST PFC????CRM
9
BOOST PFC????DCM
10
PFC????? ?????????
??????
??????
??????
11
?????
???????????
????????????
12
1??????? ?????????
(U in ?)
(1)??????????
(2)???????????????
1.051.1?
(3)??????????????
??
????220V,50Hz,?????????20(?20), ???????
????????390410V
13
1??????? ?????????
(U in ?)
14
2????????? ?????????

• (1)???????????????
• (2)?????????????,??????????

15
3??????? ?????????
16
4. ????????????????

• (1)??Boost?????,?????????????

?????
??????(??)
17
5???????? ?????????
???????
18
5???????? ?????????
19
5???????? ?????????
???????
????
20
6???AP??????? ?????????
21
6???AP??????? ?????????
22
6???AP??????? ?????????
????B?????
???????
???????? ?????????
23
6???AP??????? ?????????
Boost????
(A)??????
(B)?????????
(C)?????????
B???
????????
24
6???AP??????? ?????????
25
6???AP??????? ?????????
26
6???AP??????? ?????????
?????1kW??,?????????
?????????,?????? ???????????????????,?????
?,???????????
27
7?????
28
??Boost????
29
1??????? CRM????
??????????????.
30
1??????? CRM????
???????????????
31
2??????? CRM????
????????????????
????U o????????U ip,????????????,?????????,???????
????,??????,??????
32
2??????? CRM????
?? ??
?????,?????,??????,?????
33
?? CRM????
???????Ton10µs ????????1.414Uimin/ U
o0.65 ??U oUi/(1-D) ?D0.35
???TTon/D10/0.3528.57µs, ??f1/28.75µs35kHz?
???????20???? ???????2200.8176V ???? U o
1.4142200.8/0.65383V.
34
CRM????
?15?,???12µs,????????83kHz
????????,?????????? T onh(0.8/1.2)2TonL4.444µs,

?????????? TTonh/(1-1.4141.2220/383)176µs, ???
?????5.66kHz?
35
CRM????
??????????410V
(1)????????????25.45µs,?????39.3kHz?
(2)15??11.864µs,?????84.5kHz?
(3)?????????,???49.2µs,?????20.3kHz?
(4)?????????????????????,???????,??????100kHz?????
????????5????383V?????,??18??
36
??
CRM????
(1)??????,?????????,????????
(2)?????????????????,????????????
(3)220V20????,?????????410V??? (4)110V20????,?
?????210V?
37
3??????? CRM????
38
4?????? CRM????
????
(1)??????20kHz??,????? (2)?????????,???????
????????????????50µs?
39
5????? CRM????
40
5????? CRM????
??????
????
???? ?????
??? ???
?AP???????
41
6??????? CRM????
42
7???????? CRM????
43
CRM???? ??
???220V20,????200W, ??????(CRM),?????0.95?
????????
????
44
???????? ??
??????410V,??????????? ?20kHz?????50µs,??,?????
??????????????
45
???????? ??
?????
??????
46
???????? ??
???????,????????
????
??
??77439,??????60.
??????
47
???????? ??
77439???????l10.74cm,?? ???
????60,H21Oe,???????90?,?????????? ???????,?????
?
48
???????? ??
??????H11121/10522.2Oe, µ???0.88,?????
????????????????????1? ???????????????,?????? ???
,?????????,???????? ???80,?????????,?????? (0.81
)/20.9,??0.88?
49
???????? ??
??????j5A/mm2,?????
??
????????
50
???????? ??
51
PFC?????????
(1)?????????? ???????????????????????????
?????????????????????,?????????
(2)???????????????????,???????????,????????????,??
?????????????????
(3)??????????????????, ?????????????????????? ????
?????????????????
52
PFC?????????
(4)???????????????????,???????????????????????????
????????????????BS?
(5)??AP??? ??????????????????,????????????
???????????
53
??1??Boost?????????
54
??2?????????????
55
PFC????
????,?????!