日光燈是我們最常用的照明設備。傳統的日光燈是屬於電感性的負載,接上電源後其電壓與電流的波形會產生異相位的問題,造成無效功率。本研究是以簡單而且經濟的方法在日光燈的兩端並聯電容器以改善其電流落後電壓的情形,減少無效功率,降低電力的消耗。研究中測量日光燈的等效阻抗,並加以相應的補償電容,從電路實驗中觀察,得到功率修正的結果。Fluorescent lamps shine our lives everywhere. However, traditional fluorescent lamps are inductive loads and produce a phase angle between voltage and current when connected to an alternating power supply, which leads to considerable electricity losses. This project uses parallel capacitors with the fluorescent lamp to compensate the phase difference between current and voltage, and thus reduces power consumption. In the study the impedance of a CFL (Compact Fluorescent Lamp) bulb has been measured and compensated with corresponding capacitance. Finally, the power consumption reduction is verified with experimental results.
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