含市電並聯之太陽能螢光燈照明系統的設計與研製

本文旨在設計含市電並聯之太陽能螢光燈照明系統。發電系統採用零電壓切換式直流轉換器作為充電電路，可減少功率開關的切換損失；並運用最大功率追蹤控制法則作為太陽電池輸出功率的控制，以提升發電的效率。電子安定器由推挽式直流轉換器與D類串並聯諧振式變流器所組成，並採用脈衝模式作為螢光燈的調光方法。在市電並聯方面，採用主動功因校正電路作為前級穩壓電路，以提升市電側的功率因數，降低電流的總諧波失真。由實驗結果顯示，當螢光燈輸出36W時，燈管電流峰值因數約1.41；執行市電並聯時，市電側之功率因數約0.99，整體電路之效率約91%。本文所設計的太陽能螢光燈照明系統，具有節能、高效率、低燈管電流峰值因數及低啟動電壓的優點，能符合綠色照明之實用潮流。

關鍵字

市電並聯；零電壓切換式直流轉換器；最大功率追蹤；脈衝模式；峰值因數

並列摘要

This study designs and develops a solar-powered fluorescent lamp light-dimming system with utility grid-connected. In the electricity generation system, we adopt the maximum-power point tracking (MPPT) control technique and match it with a zero-voltage switching DC-DC converter served as a charging circuit to increase the efficiencies in power generation and charging. The electronic ballast of this study comprises a push-pull DC/DC converter and the class D series-parallel resonant inverter. We adopt the burst mode as the dimming method for the fluorescent lamp. In the utility grid-connected, we also adopt an active power factor-correction circuit as the pre-stage voltage regulator, to raise the power factor of the input AC source and reduce the total harmonic distortion of the input current. The experimental results indicate that the crest factor of the lamp current is 1.41 when the output power of the fluorescent lamp is 36 W. The power factor is 0.99 and the efficiency of the ballast is 91% when the system is in utility grid-connected. The solar-powered lighting system developed in this study possesses a few advantages, including energy conservation, high efficiency, a low lamp-current crest factor and a low starting lamp-voltage, which all conform to the general intention of green lighting.

並列關鍵字

utility grid-connected ； zero-voltage-switching ZVS DC/DC converter ； maximum power point tracking MPPT ； burst mode ； crest factor

國際替代計量

含市電並聯之太陽能螢光燈照明系統的設計與研製

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