1
????????????

• ??? ???????
• (????)

2
? ?

• ??
• 5-3 ??????
• 5-3.1 ????????
• 5-3.1.1 ???????
• 5-3.1.2 ???????????
• 5-3.2 ????????
• 5-3.3 ????????
• 5-3.3.1 ??????????
• 5-3.3.2 ?????
• 5-3.3.3 ??????????PWM??
• 5-3.3.4 ?????PWM??
• ????

3
? ?

• ?????????
• ??????????????,??????????????
• ??????,???????
• ?????
• ????????????
• ??????????

4
5-3.1.1 ???????

• ???
• ????????????????????????
• ???????????????
• ???
• ??????????????????,???????????,??????????
• ????????????
• ??????????????
• ????
• ??????S???Lr?Cr?????,?????????????????????????????
  ????????,???S???????????????

5
5-3.1.2 ???????????

• ?????
• ??????????????????,????????????????,?????????????
  ,????????

?5-1 ????????????? a)??? b)????? (?????)
6
5-3.1.2 ???????????

• ????????????????,????????????????,?????????????,?
  ???????

?5-2 ???????? a)??? b)????? (?????)
7
5-31.2 ???????????

• ???????????????????????
• ??????????????????????????,????????,?????????????
  ???
• ???????????????????????????,???????,???????????
• ??????????????????????????????????????????????????
  ??????,?????????

8
5-3.2 ????????

• ??????????????????,?????????????????
• ???????????????????????????????PWM??????PWM???
• ?????????????????????????,????????????????

9
5-3.2 ????????

• ? 5-3 ?????????(?????)
• a)?????? b)?????????????
• c)????????????? d)??????????????

10
5-3.2 ????????

• 1. ?????
• ???????????????????,?????????
• ???????????,????
• ??????????(Zero-Voltage-Switching Quasi-Resonant
  ConverterZVS QRC)

? 5-4 ????????????(?????) a)?????????????????
b)????????????????? c)?????????????????
11
5-3.2 ????????

• ??????????(Zero-Current-Switching Quasi-Resonant
  ConverterZCS QRC)
• ??????????(Zero-Voltage-Switching Multi-Resonant
  ConverterZVS MRC)
• ????????????(Resonant DC Link)?
• ??
• ????????,??????????
• ?????????,??????????????,????????
• ?????????????????,??????????????(Pulse Frequency
  ModulationPFM)??????

12
5-3.2 ????????

• 2. ???PWM??      
• ?????????????????,??????????????
• ???PWM??????
• ?????PWM??(Zero-Voltage-Switching PWM
  ConverterZVS PWM)
• ?????PWM??(Zero-Current-Switching PWM
  ConverterZCS PWM)?
• ??
• ???????????,???????????,???????????
• ?????????????PWM?????

?5-3 ???PWM????????? a)?????PWM?????????
b)?????PWM????????? (?????)
13
5-3.2 ????????

• 3. ???PWM??
• ???????????????,??????????????
• ???PWM??????
• ?????PWM??(Zero-Voltage-Transition PWM
  ConverterZVT PWM)
• ?????PWM??(Zero-Current Transition PWM
  ConverterZVT PWM)?
• ??
• ????????????????????????????????
• ????????????????,???????????????

? 5-6 ???PWM????????? a)?????PWM?????????
b)?????PWM????????? (?????)
14
5-3.3.1 ??????????
?5-7 ????????????? (?????)
?7-8 ???????????????? (?????)
15
5-3.3.1 ??????????

• ????      
• t0t1??t0????,??S???,???VD???,uCr0,iLrIL
• t0??S??,???????Cr?S?????????,??S????????S???,VD???
  ????LrL?Cr??, uCr????,??VD????uVD????,??t1??,uVD
  0,VD???????uCr????
• (7-1)

?5-9 ???????????t0t1??????(?????)
16
5-3.3.1 ??????????

• ????
• t1t2??t1?????VD??,??L??VD??,Cr?Lr?Ui???????t2??
  ,iLr????,uCr???????
• t2t3??t2???,Cr?Lr??,??t3??,uCrUi,iLr?????????

?5-10 ???????????t1t2??????(?????)
17
5-3.3.1 ??????????

•  
• t3t4??t3????,Lr?Cr????,uCr????,??t4??uCr0?
• t1?t4????????????
• (7-2)
• t4t5??VDS??,uCr?????,iLr????,??t5??,iLr0???????
  S??????,????????????S??,??????????
• t5t6??S???,iLr????,??t6??,iLrIL,VD???
• t4?t6????iLr?????
• (7-3)
• t6t0??S???,VD????

18
7.3.1 ??????????

• ????????
• ???(7-2)??uCr(???S???uS)????
• (7-4)
• uCr????????(???S???????)
• (7-5)
• ??????????????????
• (7-6)
• ???????????????Ui?2?,??????????????

19
7.3.2 ?????

• ????????????-??-?????????????(DC-Link)????????????
  ?,???????????????????????

? 5-11 ?????????? (?????)
20
5-3.3.2 ?????

• ??????????????7-12?
• t0t1??t0????,??S????,iLrgtIL,?
  t0??S??,????????iLr?Cr??,t1??,uCrUi?
• t1t2??t1??,????iLr?????
  t1????,iLr???Cr??,??t2??iLrIL,uCr???????

? 5-12 ???????????? (?????)
? 5-13 ????????????? (?????)
21
5-3.3.2 ?????

• t2t3??uCr?Lr?L??,iLr??,?????,??t3??uCrUi?
• t3t4??t3??,iLr????????,????,uCr????,
  t4??,uCr0,S???????VDS??,uCr??????
• t4t0??S??,??iLr????,??t0??,S?????
• ??????????,??????????????

? 5-12 ????????????(?????)
? 5-13 ?????????????(?????)
22
5-3.3 ??????????PWM??

• ??????????,??????????,?????????????
• ?????????????
• ?????TS?,????????????TS/2,?????????TS/2
• ????????????????,??????????????????????????
• ?????????S1-S4?S2-S3,S1????S4??0TS/2??,?S2????S3?
  ?0TS/2??,???S1?S2??????,??S3?S4???????

23
5-3.3.3 ??????????PWM??
? 5-14 ?????????PWM??(?????)
? 5-15 ????????????(?????)
24
5-3.3.3 ??????????PWM??

• ????
• t0t1??S1?S4??,??t1??S1???
• t1t2??t1????S1???,??Cs1?Cs2???Lr?L??????,
  uA????,??uA0,VDS2??,??iLr??VDS2???
• t2t3??t2????S2??,???????????VDS2???????,??S2????
  ???

?5-16 ???????t1t2????????(?????)
25
5-3.3.3 ??????????PWM??

• t3t4??t4???? S4???,??????VD1?VD2????,???????????
  ????,?????,??Cs3?Cs4?Lr???????Lr???????,B???????,?
  ?S3???????VDS3??????????t4??S3?????S3???????
• t4t5??S3???,Lr????????iLr?????????,t5??iLrIL/kT
  ,??????VD1??????????,??IL?????VD2??

?5-17 ???????t3t4??????? (?????)
26
5-3.3.4 ?????PWM??

• ?????PWM????????????????

?5-18 ????????PWM?????? (?????)
27
7.3.4 ?????PWM??

• ????????S1??????S??,S???S1???
• t0t1??,S1??,VD?????,??Lr?????Uo,??iLr????,
  VD?????????????t1??,iLrIL,VD???????,???
• t1t2??Lr?Cr??????,Lr??????Cr?????,t2??uCr0,
  VDS??,uCr?????,???iLr?????

? 5-20 ????????PWM???t1t2??????? (?????)
28
7.3.4 ?????PWM??

• t2t3??uCr?????,???iLr????,?????????t3??S???S1???
  
• t3t4??t3??S???,???????S?????S1??,Lr??????VD1????
  ??,???????,???S?????????t4??iLr0,VD1??,???S????iS
  IL,???????????
• t4t5??t5??S???Cr???S??????,???S??????

?5-19 ????????PWM????????(?????)
29
????

• ??????
• 1)?????????????????????????,??????????????????????
  ???
• 2)???????????????????????????????,?????????????PWM
  ????PWM???????????????????????
• 3)????????????????PWM????????PWM?????????????????
  ???????????????????????

30
?7-1 ?????????????
a)??? b)?????
31
?7-2 ????????
a)??? b)?????
32
? 7-3 ?????????
a)?????? b)????????????? c)?????????????
d)??????????????
33
? 7-4 ????????????
a)????????????????? b)????????????????? c)??
???????????????
34
?7-5 ???PWM?????????
a)?????PWM????????? b)?????PWM?????????
35
? 7-6 ???PWM?????????
a)?????PWM????????? b)?????PWM?????????
36
?7-7 ?????????????
37
?7-8 ????????????????
38
?7-9\10?????????
?7-10 ???????????t1t2??????
?7-9 ???????????t0t1??????
39
? 7-11 ??????????
40
? 7-12 ????????????
41
? 7-13 ?????????????
42
? 7-14 ?????????PWM??

43
? 7-15 ????????????
44
?7-16 ???????t1t2????????

45
?7-17 ???????t3t4???????
46
?7-18 ????????PWM?????
47
?7-19 ????????PWM????????
48
? 7-20 ????????PWM???t1t2???????