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Lecture 04 Basic circuit concept Meiling CHEN 2005.

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Presentation on theme: "Lecture 04 Basic circuit concept Meiling CHEN 2005."— Presentation transcript:

1 Lecture 04 Basic circuit concept Meiling CHEN 2005

2 Power system: 12W 13W 34W  a. YY 33W  a. Y b.   (1).12W
Meiling CHEN 2005

3 (2).13W 13W Meiling CHEN 2005

4 正相序(順時針) Phase voltage Line voltage Meiling CHEN 2005

5 負相序(逆時針) Phase voltage Line voltage Meiling CHEN 2005

6 Meiling CHEN 2005

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9 Example Case1: Case2: case1 case2 Meiling CHEN 2005

10 Single phase model Transfer Y (load and source)
How to get single phase model? Transfer Y (load and source) Get A phase circuit to solve V, I, S, z Get the others phase by Meiling CHEN 2005

11 Y Meiling CHEN 2005

12 example source load line Single phase model: Meiling CHEN 2005

13 Transformer Meiling CHEN 2005

14 常用配電用變壓器的分類可歸納如下:  ★按相數分:  (1)單相變壓器:用於單相負荷和三相變壓器組。  (2)三相變壓器:用於三相係統的升、降電壓。  ★按冷卻方式分:  (1)樹脂型乾式(模鑄)變壓器:依靠空氣對流進行冷卻,一般用於局部照明、電子線路等小容量變壓器。  (2)油浸式變壓器:依靠油作冷卻介質、如油浸自冷、油浸風冷、油浸水冷、強迫油循環等。 ★按鐵芯形式分:  (1)鐵芯式變壓器:用於高壓的電力變壓器。  (2)非晶質合金變壓器:非晶質合金鐵芯變壓器是用新型導磁材料,空載電流下降約80%,是目前節能效果較理想的配電變壓器,特別適用於農村電網和發展中地區等負載率較低的地方。    Meiling CHEN 2005

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18 Meiling CHEN 2005

19 士林電機油浸式變壓器 Meiling CHEN 2005

20 士林電機油浸式變壓器特性表 Meiling CHEN 2005

21 Equivalent Circuit Meiling CHEN 2005

22 渦流損 磁滯損 Leakage reactance 忽略鐵損 忽略銅損 Meiling CHEN 2005

23 Meiling CHEN 2005

24 DC Motor 玩具馬達 Meiling CHEN 2005

25 Induction Motor Meiling CHEN 2005

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29 Meiling CHEN 2005

30 三相二極鼠籠式交流感應馬達之結構 Meiling CHEN 2005

31 Subtransient reactance
Equivalent Circuit Subtransient reactance Meiling CHEN 2005

32 2-pole permanent magnet synchronous motor
Meiling CHEN 2005

33 A Four Pole synchronous Generator
Meiling CHEN 2005

34 Equivalent circuit Meiling CHEN 2005


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