4.43 ḹBoost PFCϢӴ㒳Boost PFC 偠 ↨ (3)
broadcasterѨゴ ゟ⬉ ḹBOOST PFCⱘ䇤 ⦄䈵ⷨお (3)
5.1䇤 ⦄䈵ⱘ䅵ㅫ ӓⳳ (3)
5.2䇤 ⦄䈵⧚䆎 ⱘ 偠偠䆕 (3)
5.3PFC⬉ 䜡㕂 䇤 ӊⱘ (3)
5.4 ゴ 㒧 (3)
ゴ ḹBOOST PFC⬉䏃⬉⺕ ⡍ ⷨお (3)
6.1Ӵ EMIⱘ Нǃ⌟䆩 ⊩ (3)
6.2Ӵ EMIⱘ䅵ㅫ ӓⳳ (3)
6.2.1Ӵ EMIӓⳳὖ䗄 (3)
6.2.2 ѢSIMPLISⱘӴ EMIӓⳳ (3)
6.2.3Ӵ EMIӓⳳ㒧 ↨ ㅔ (3)
6.3Ӵ EMIⱘㄝ ⬉䏃 (3)
鼹鼠的英文6.3.1 ㄝ ⬉䏃 (3)
母亲节是国际节日吗6.3.2 ㄝ ⬉䏃 (3)
6.4 ḹB OOST PFC⬉䏃EMI⡍ 㒧 (3)
ϗゴ㒧䆎 (3)
7.1 乒 㒧 (3)
7.2䖯ϔℹⷨお䞡⚍ (3)
㗗 ⤂ (3)
㟈䇶 (3)
䇏⸩ ԡ 䯈 㸼ⱘ䆎 (3)
䰘 (3)
ϔゴ㒾䆎
学化妆的基本步骤1.1 㚠
䱣ⴔ ㉏⬉ Ң⬉㔥≆ ⱘ⬉㛑䍞 䍞 ҹ 䰙㒘㒛 Ѣ⬉㛑䋼䞣ⱘ㾘㣗䍞 䍞ϹḐˈ ⥛ ℷ˄Power Factor Correction ˈPFC ˅ 㒣 Ў⬉ ⬉ 㸠ϮЁⱘ⛁⚍DŽ 1-1㒭 њӴ㒳ḹ ⌕ǃ ⬉ Ⓒ⊶ⱘ ⬉⑤ ⥛ ℷ⦃㡖ⱘ ⬉⑤ⱘЏ㽕⊶ DŽӴ㒳ḹ ⌕ ⬉⑤Փ⫼ 乥Ѡ ㅵḹ ㋻䱣 ⱘ ⬉㾷⬉ 乥⥛Ў50Hz/60Hz ⱘ㔥 䕀 Ⳉ⌕⬉ 䕧 㒭 㑻 DŽ䖭⾡ ⱘ䕧 ⬉⌕ 䴲ℷ ⱘˈ㗠Ϩ䇤⊶ 䞣 ˄ 1-1a ˅DŽ ⱘ ⥛ ϔ㠀 0.5 DŽ ⥛ ⦃㡖ⱘ ⬉⑤ˈ 䕧 ⬉⌕⊶ Ϣ䕧 ⬉ ⊶ Ⳍ ˈ ϨⳌԡϔ㟈˄ 1-1b ˅DŽ䖭ḋ Փ Ң⬉㔥≆ ⱘ ⥛䰡Ԣˈ䕧䗕⬉㛑ⱘ 㗫 ˈ㛑 ⱘՓ⫼⬉㛑DŽ
+
-(a) (b)
1-1Ӵ㒳ḹ ⌕䕧 ⱘ Ϣ PFC 㑻ⱘ П↨䕗
(a)Ӵ㒳ḹ ⌕䕧 ⱘ ; (b) PFC 㑻ⱘ
Fig.1-1 Comparison of converters with and without PFC stage
(a) Converter without PFC stage; (b) Converter with PFC stage
ѢϔϾ ⥛ ℷ⦃㡖ⱘ ⬉⑤ 䇈ˈ 䆒䋳䕑 ⥛Ў1kW ˈ ⱘ ⥛Ў98%ˈ ⥛ Ў0.55DŽ Ң⬉㔥≆ ⱘ⬉㛑Ў˖
1000185598%0.55
W W u (1.1) 㢹䆹 Փ⫼њ ⥛ ℷ ˈ 䆒 ℷ PF Ў0.99ˈ ḋЎ1kW 䋳䕑կ⬉ˈҢ⬉㔥≆ ⱘ⬉㛑 䰡ԢЎ:
1000103198%0.99
W W u (1.2) Ϟ䗄䅵ㅫЁⱘ⬉㛑 Ң⬉㔥≆ ⱘ ⥛ ⥛П ˈ ⥛ 催 Ң⬉㔥≆ ⱘ ⥛ 㛑䰡Ԣˈ䖭 催⬉㛑 ⬉㔥ЁⱘӴ䕧 ⥛ ⴔ䞡㽕ⱘ Н[1]DŽ在家办公
2012年高考数学试题Ⳃ ⬉⑤Ё 㺙 ⥛ ℷ⦃㡖ⱘ ϔϾЏ㽕 Ўњ⒵䎇 䰙㾘㣗 ⬉⑤䇤⊶ 䞣 ⥛ ⱘ㽕∖DŽ ⲳⱘEN61000-3-2ϢEN60555ҹ Ϣ
Ⳍ ⱘ 䰙 IEC1000-3-2 IEC555ˈ
䛑 ⬉կ⬉䆒 Ёⱘ䕧 ⬉⌕䇤⊶ 䞣˄Ң ⊶ 40䇤⊶˅䖯㸠њ䰤 DŽԢ ⥛ ⬉㔥 ⥛ ⱘ㟈 䍋 Ϫ⬠ⱘ催 ⊼DŽⲳ⥛ њ ⥛ ˈЁ ⱘ 䅸䆕(CCC)ǃ ⱘJIC-C-61000-3-2 ҹ 㕢 ⦃ 㕆(EPA)ⱘ㛑⑤П (Energy Star)䅵 䛑㸼 ⥛ ℷ Ўϔ乍 ⧗ ⱘ 㾘 DŽ㗠Ϩˈ ⥛ ⱘ㽕∖ϡ 䰤Ѣ ⥛䆒 ˈ ⱘ 㾘㣗㹿䖤⫼ ҙ⍜㗫75W ҹϟⱘ✻ 䆒 ㄝ⬉ ѻ ЁDŽ
1.2 ⥛ ℷ ὖ䗄
1.2.1 ⥛ Ϣ䇤⊶ 䞣
⥛ ҹㅔ ⱘ НЎ ⥛Ϣ㾚 ⥛ⱘ↨⥛˖
PF= ⥛/㾚 ⥛ (1.3)
Ё ⥛ ҹ НЎ⬉⌕Ϣ⬉ ⱘⶀ Ь⿃ 乥 ⱘ ˈ ⥛ ⍜㗫 ⬉䏃Ёⱘˈ䕀 ⾡ Ҫ ⱘ㛑䞣Փ⫼DŽ㗠㾚 ⥛Ў⬉䏃Ё⬉⌕Ϣ⬉ ⱘ ПЬ⿃DŽ㢹⬉⌕Ϣ⬉ Ўℷ ⊶ˈϨⳌԡϔ㟈ˈ ⥛ Ў1DŽ㢹⬉⌕Ϣ⬉ Ўℷ ⊶ˈԚⳌԡ ЎT ˈ ⥛ Ўcos T DŽ
䆒䕧 ⬉ Ўℷ ⊶ˈ ⥛ ҹ㸼䖒Ў⭌ d k Ϣԡ⿏
k T П⿃˖
(1)(1)cos cos rms rms rms d rms rms rms V I I PF k k V I I T
T T u (1.4) Ё(1)d rms rms k I I ˈcos k T T DŽ
ada chan⭌ d k НЎ ⊶⬉⌕ Ϣ ⬉⌕ П↨DŽԡ⿏ НЎ⬉
⌕Ϣ⬉ Ⳍԡ ⱘԭ ˈ cos T DŽϟ ⥛ Ϣ 䇤⊶⭌ 䞣˄Total
Harmonic Distortion ˈTHD
˅㘨㋏䍋 ˖
d k (1.5) ℸ 䕧 ⬉⌕ⱘ ⊶ ӑϢ䕧 ⬉ Ⳍԡϔ㟈ˈ 1k T
:
PF (1.6) ⬅Ϟ ˈ㢹 䇤⊶⭌ 䞣Ў10%ˈ ⥛ Ў0.995DŽ
1.2.2 ⥛ ℷ⬉䏃ⱘ ㉏
word技巧⥛ ℷ ⾡ ㉏⊩ˈҢ ⬉⬉㔥䕧 ҹ Ў ⳌPFC ⬉䏃 ϝⳌPFC ⬉䏃DŽҹ ⦄PFC ⱘ ⊩Ϟ Ў ⑤PFC ⬉䏃 ⑤PFC ⬉䏃DŽ ⥛ ℷ 䑿ⱘ㒧 㗠㿔ˈ ⥛ ℷ Ў 㑻PFC ϸ㑻PFC ϸ⾡DŽϟ䴶ҙ ϸ⾡ ㉏ ⊩ ㅔ㽕ҟ㒡DŽ
1.2.2.1 ⑤PFC ⬉䏃 ⑤PFC ⬉䏃
1-2a 㒭 њϔϾ 䕧 ⬉ 㣗 䗝 ⱘ ⑤PFC ⬉䏃 ⊶ DŽ ⑤PFC ⬉䏃 䗮䖛 ⌕ḹ ϔϾ ⬉ 䖒 PF ǃ 䇤⊶ 䞣ⱘⳂⱘDŽ 㽕䆹⬉ 䎇 ˈ 㛑 䕧 ⬉⌕ⱘ ˈ ḹ ⌕⬉䏃ⱘ 䗮㾦ҹ 䰡Ԣ䇤⊶ 䞣ҹ⒵䎇㽕∖DŽ 1-2b Ёⱘ⊶ Ў䞛⫼ ⑤PFC ⬉䏃 ⱘ䕧 ⬉⌕⊶ Ϣ PFC ⬉䏃ⱘ䕧 ⬉⌕⊶ П↨䕗DŽ⬅ 㾕䞛⫼ ⑤PFC ˈ䕧 ⬉⌕ 䰡Ԣˈ 䗮㾦 ˈ ϔ ⱘ ⥛ ℷ⫼DŽ
(a) (b)
1-2 ⑤PFC ⬉䏃㒧 ⊶
(a)⬉䏃㒧 ˗(b)⊶
Fig.1-2 Structure of Passive PFC and its waveforms
(a) Circuit diagram; (b) Waveforms
⑤PFC ⬉䏃 ϔѯ䅵ㅫ ⬉⑤ЁՓ⫼ˈ Ў䅵ㅫ ⬉⑤ 䞡䞣 ԧ⿃
ϡ DŽ Ў ⑤PFC⬉䏃㱑✊ Ԣǃ㒧 ㅔ ˈԚ 䳔㽕ー䞡ⱘPFC⬉ DŽ ⥛䍙䖛250Wҹ ˈ ⑤PFC⬉ ⱘԧ⿃ 䞡䞣 ⊩ њDŽ ҹ ⑤PFC ⬉䏃 㛑䗖⫼Ѣ ⥛ǃԢ ǃ ԧ⿃ 䞡䞣㽕∖ϡ催ⱘ DŽ䖭⾡ ℷ⬉䏃 㛑䖒 ⱘ ⥛ 0.6̚0.8П䯈DŽ ϨЎњ䗖 ⧗ ⬉ 䖬䳔⏏ 1-2a ⼎ⱘ䕧 ⬉ 㣗 [2]DŽ
⥛乚 ˈ ⑤PFC⬉䏃 Т ϔⱘ䗝 DŽ ⑤PFC⬉䏃 ҹ䖒 䖥1ⱘ ⥛ ҹ ԢⱘTHD Ϩ ҹ䗖 㣗 ⬉ 䕧 DŽ ⑤PFC⬉䏃䕧 ⬉ ϔ㠀Ў催 400V ˈ ҹՓ⫼䕗 ⱘ⬉㾷⬉ ⒵䎇䕧 ⬉ 䯈ⱘ㽕∖DŽ г Ѣ 㑻DC/DC⬉䏃ⱘ 㗫DŽ ⷨおⱘ ḹBoost PFC ⬉䏃 Ѣϔ⾡催 ⥛ǃԢ 㗫ⱘ ⑤PFC⬉䏃DŽ ⑤PFC⬉䏃㱑✊ Ӭ⚍ˈԚ 䳔㽕 䕗催ⱘ 㢃⠛ ⱘ ⬉䏃DŽ㗠Ϩ⬅Ѣ㒧 ⑤PFC⬉䏃г њ㑺5̚10%ⱘ 㗫DŽ ⑤PFC⬉䏃䖬䳔㽕 ⱘEMIⒸ⊶ 䖒 ⬉⺕ ⱘ㽕∖DŽ亮堂堂
1.2.2.2 㑻PFC ϸ㑻PFC
㑻PFC PFC㑻 DC/DC㑻 ϔ䍋ˈ ⫼ϔ㑻 㛑 ⦄䕧 ⥛ ℷǃ䕧 䕧 ⱘ䱨⾏ 䕧 ⬉ ⱘ䇗㡖 㛑DŽ⬅Ѣ 㑻PFC ⱘPFC㑻ϢDC/DC㑻 ⫼ϔϾ ㅵˈ ҹ ⱘ 䕗Ԣǃ㒧 ㅔ DŽԚ 㑻PFC ⱘ䯂乬 㛑⬉ Ϟⱘ⬉ Ϣ䕧 ⬉ ⱘ ℷ↨ ˈ㗠Ϩ䕧 ⬉⌕ⱘTHD䕗 DŽ 㑻PFC ⫼ѢԢ ⥛ǃ 䕧 ⬉ ㊒ 㽕∖ϡ催ⱘ ⫼ DŽ
ϸ㑻PFC Փ⫼ϸϾ⣀ゟⱘ ⥛ ℷ DC/DC㑻䕧 ⬉ 䇗 ⱘ 㛑ˈ ЎϔϾ⣀ゟⱘ ⥛ ℷ⦃㡖 ϔϾDC/DC ⱘϸ㑻 DŽPFC㑻䗮 Փ⫼ⱘ Boost ˈ ѢBoost ⱘPFC㑻 ϞⳌ ❳DŽϸ㑻PFCⱘӬ⚍Ў˖PFC㑻㛑 ⦄催 ⥛ ǃԢ䕧 ⬉⌕䇤⊶ 䞣ˈPFC䕧 ⬉ ҹ կ䕗〇 ⱘ催 Ⳉ⌕䕧 䕗䭓ⱘ 䯈DŽ⣀ゟⱘDC/DC㑻 㛑 կ㊒ ⱘ䕧 ⬉ 㒭䋳䕑DŽ ҹⳂ ⱘ⬉⑤ Փ⫼ϸ㑻PFC DŽԚ ⬅Ѣ⬉㛑 ϸ㑻PFC Ё㹿 ⧚њϸˈ 㗫↨ 㑻PFC DŽ㗠Ϩ↣㑻⬉䏃 䳔㽕⣀ゟⱘ ㅵǃ ㄝ ӊˈ њ DŽ
1.2.3 ⑤ ⥛ ℷ ⊩ 乒
䆎 ⑤PFC⬉䏃Փ⫼ԩ⾡ ˈ䛑㟇 䳔㽕 ϔϾPFC⬉ ԡѢ↡㒓䕧 ջDŽ⬅Ѣ⬉ ⬉⌕ϡ㛑さ ˈPFC⬉ 䕧 ⬉⌕䍋 њ ⫼DŽ ⾡ ⥛ ℷ ⊩䗮䖛ϡ ⱘ ⬉ ⬉⌕ⶀ ⊶ ˈՓ ⬉ ⬉⌕ 乥 ⊶ 䞣Ϣ䕧 ⬉ ⱘ⊶ ϔ㟈 Ϩ Ⳍԡˈҹℸ ⦄ ⥛ ℷⱘ 㛑DŽ ✻lami
