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Lecture 04 Basic circuit concept Meiling CHEN 2005
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Power system: 12W 13W 34W a. YY 33W a. Y b. (1).12W
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(2).13W 13W Meiling CHEN 2005
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正相序(順時針) Phase voltage Line voltage Meiling CHEN 2005
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負相序(逆時針) Phase voltage Line voltage Meiling CHEN 2005
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Example Case1: Case2: case1 case2 Meiling CHEN 2005
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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
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Y Meiling CHEN 2005
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example source load line Single phase model: Meiling CHEN 2005
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Transformer Meiling CHEN 2005
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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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士林電機油浸式變壓器 Meiling CHEN 2005
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士林電機油浸式變壓器特性表 Meiling CHEN 2005
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Equivalent Circuit Meiling CHEN 2005
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渦流損 磁滯損 Leakage reactance 忽略鐵損 忽略銅損 Meiling CHEN 2005
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DC Motor 玩具馬達 Meiling CHEN 2005
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Induction Motor Meiling CHEN 2005
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三相二極鼠籠式交流感應馬達之結構 Meiling CHEN 2005
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Subtransient reactance
Equivalent Circuit Subtransient reactance Meiling CHEN 2005
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2-pole permanent magnet synchronous motor
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A Four Pole synchronous Generator
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Equivalent circuit Meiling CHEN 2005
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