CH 4 AC Generator Pg215
AC Generator 1. 交流發電機原理 2. 交流發電機相位原理 3. 交流發電機磁場控制 4. 交流電機頻率與轉速 5. 損失 5. 損失 6. 電壓調整率
DC machine basics X South pole North pole X X X Force Angular velocity Zero Force
AC Generator
Phasor 相量 phasor
Sin
AC Machinery Fundamentals Frequency:
4.1 A Simple Rotation Loop Fig.4-1
Tangential velocity v: The voltage is a sinusoid magnitude .
The Torque Induce in a Current-Carrying Loop
4.2 Rotating Magnetic Field Fig.4-8
Rotating Magnetic Field
Frequency & Rotational Speed
Frequency & Rotational Speed
4.7 Losses 1. Copper Losses: 2. Core losses a. hysteresis loss b. eddy current loss 3.Mechanical Losses 4.Stray Losses (Miscellaneous Losses )
Losses Generator Motor
4.8 Voltage Regulation
Speed Regulation