• 作者： 黃慶連; 鄭健隆; 林清一
• 作者服務機構： 國立成功大學電機工程學系; 國立成功大學航空太空學系
• 中文摘要： 本文提出一數值方法，模擬非正弦情況下變壓器磁滯曲線。首先將電流、磁通之間的磁滯曲線，視為圖形辨認問題，以分段曲線配適（piecewise curve fitting）進行模擬，所提數學模型並可直接計算變壓器損失。待測變壓器外加SIN（wt）訊號代表非正弦電源，所得實驗結果與理論分析相當吻合。本方法同時簡化演算過程與實驗手續，所得結果也相當準確。
• 英文摘要： This paper presents a numerical expression for a hysteresis loop of a transformer. The i-ψhysteresischaracteristic model for transformers and reactors is treated as a shape identification problem and is solvedby the use of a piecewise curve fitting technique. The studied transformer is magnetized by forcednon-sinusoidal voltage. The distorted excitation is represented by the function SIN(wt). This model alsoallows direct calculation for hysteresis losses. Experimental results are in agreement with the developedtheory. The proposed technique improves the computation procedures, required measurements, and thesolution accuracy.
• 中文關鍵字： transformer hysteresis loop; non-sinusoidal excitation; harmonics; numerical analysis
• 英文關鍵字： --