?7? AC-AC????

1
?7? AC-AC????

• 7.1 ?????
• 7.2 ?????

??
2

• AC-AC ?????????,????(direct conversion)?????(indir
  ect conversion )?
• ???????????????????????,???????????,??????????????
  ?????????????????????????????????????????????(cyc
  loconverter),?????????????????,??????????1/n,n????
  ??????????(??100Kw)?????
• ???????????,?AC-DC-AC,????AC-DC???DC-AC???????????
  ??????POWEMOSFET?IGBT??????????????????,?????????,
  ???????????????????????????,????????????,??????DC-
  AC????????

3
7.1 ?????

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

4

• 1 ????(ON-OFF CONTROL)
• ??????????7-1??,?????????,??????????????????,?????
  ??????????,???????????????????????n???,??m???,????
  ????nm,?????? ?
• ??????????,????n???????,??????,?????T1??,????,????
  ?T2??,????m???????,??????????????????????mn??????
  ??

5
a ???? b ????? ?7-1 ????
?7-2 ??????????
6

• ?????????,??????????,????,????????Z,????n?????????
  ????????????nm???????????????
• ?????
• ????????220V,D0.6,n6(?m4)?,???????7-2??????????
  ?????????,?????????????

7

• 2 ?????
• ?????????????????????????????????,?????????????,??
  ??????????????????????????????7-1???
• 1)???????
• ?????????,??????,????????,????? ,?
  ??????T1,? ???????T2,T1?T2????
  ??7-3??????????????????220V,????10,??? ?
• ?????
• ?????

8

• ?7-4????????????,??????,?????,???????,??????????,?
  ??????????????????,?????1???2.5?????????,????????,
  ?????????????????????,????????????90????????,?????
  ???

7-4???????????
9

• R-L??,????????,??????????????????,?????
  ,????????????,??????????? ???????T1??,?
  ??,???T1????,T1????, ???????????
• ??

10

• ???????220V, , , ,
  ,?????????7-5???

7-5 ??????????????(??)
11

• L??,????????(???R???)???? ?, ??????
• ? ,???????
• ???T1? ????,???????????????,???????????,?????????
  ,?????????,? ??,??????????,??????
• ???????? ?????,????? ???????T2,??T1????,??
  ????,?T2??????,?????T2????,????????????

12

• ??????????????
• ???????220V,50Hz, ,L0.005H,?????????7-6???

?7-6 ????????????( )
13

• ?????90??,???? ,?? ?????T1??????
  ????????, ???????T2,????? ,??
  ?????T2????,????????????220V,50HZ,
  ,L0.005H,?????????7-7???

14
?7-7 ????????????( )
15

• 2) ???????
• ?????????????????,????????????????????????????????
  ????,?????????????????,???????,????7-8??,????????,
  ?????????????????????
• ??,????????????,?????????????????,????6????,??????
  ????????????????????7-9???

16
?7-8 ???Y??????????
17
?7-9 ???????????
18

• ????????????????????????????,????????,????????????
  ???????T1?T3?T5???????( ? ? )????????,T4
  ?T6?T2???????( ? ? )?????????
• T1?T3?T5 ???,???????? ? ? , T4
  ?T6?T2???????? ? ? ,???
  ?
• ?????,???????????????????? ??

19

• ??????,???????,?????????,???????????,???????,?????
  ??,????????????????????????????(
  )??????,?????????7-10???

?7-10 ????????
20

• T1?????? ???,T5??????,??????
  ??,??????(a,b),??????
• ? ??,T2????????,T6??????,??????
  ??,??????(a,c),??????

21

• ??

22

• ????,??????,??????????????????????????
  ?,???????????? ?? ??,??????????
  ,????????
• ?????????????????????, ???????????7-11???
• ?????????????????,??????????deltal??(????????)????
  ???,?????????????

23
?7-11 ????????
24

• 3 PWM??
• ????,???????????,??????,???????????,PWM????????PWM
  ????????,?????????????????,???????????????,???????
  ????????????????????(??????)???,??????????????????
  7-12??,??????7-13???

?7-12 PWM??
?7-13 PWM????????
25

• ?????????2n?????,n???3????,???d,?i???????????
  ,??????? ,???i??????????? ? ,
  ?
• ?????????????????,??????????,????????????,????????
  ?????????????????,?GTR??,??????7-14????7-14a?????,
  ?7-14b????????,???????????????????,?????????GTO???
  ???????

26
a b
c ?7-14 ?????????????
?????? ,?????????????? ??7-13????
??????,????????????????(?),?????????
??
27
7.2 ?????

• ??????????????????????????????????(cycloconverter)
  ,????????(????100Kw)????????????????????,???????,?
  ???????????????????????????????????1/3,?????????,?
  ????,????????,????????

28

• 1 ???????
• ??-????????????7-15????????????????1/3,?????VO????
  ?( ),???T1?T3 ???? ?
  ????,???T2?T4???? ????,???T1?T3?T2?T4?????
  ?
• ?????????,???T1?T3???? ????,???T2?T4 ????
  ????,???T1?T3?T2?T4?????
• ???????????,???????7-16???????
  ?????????????????7-16???? ??,????,?????????????,?
  ???????????

29
?7-15 ??-??????????
?7-16??-??????????????( )
30

• 2 ???????
• ??-???????????7-17??,???,???????,????18????,??????
  ?,??????????, ??????????????,?????????????????????
  ??
• ??-?????????18????????????(1?3?5)??????(4?6?
  2),??????????(T1?T3?T5),???????????(T4?T6?T2)?1?
  4??a??,3?6??b??,5?2??c????????????????????????
  ???

31
?7-17 ??-?????????
32

• ?????????????TO,??????????? (???TO/3),????
  (???TO/3 )??,??????????? (???TO/6 )???
• ??????
  ,??-???????????????7-18???

?7-18??-?????????????
33

• ?7-18??TO/30??????????
• ??????????120?????

34

• ?????-???????????????????????,??????-????(?)?????,
  ???36????,???????????-????????????,??????7-19???
• ???????????-???????,????????????????,?????????????
  ?????????????????

35
?7-19 ????-??????????
36

• ???
• 1 ????(??????)?????,???????????,?????????????
• 2 ?????(R10),??????,?????220V/50Hz,???????15?,
• ?????????2.4KW,???????
• ???????????10,?????????
• 3 ????220V??????(??????),?????0.5,??????????????9?
  ,????????????????
• 4 ??7-3????????,?????(??)?530V,????,R20,????30??
• ????????
• ?????????
• ????????

37

• 5 ????????????????????????
• 6 PWM?????,???7-14???????,??????
• 7 ????????,?????????????????,??????????????????
• 8 ???7-14b??PWM???,????????(????0.5?PWM????????12?
  )?
• 9 ???????????????
• 10 AC-AC??????????DC-AC?????????

??