應用一新型高升壓轉換器於遮蔽效應下之光伏系統

Applying a Novel High Step-Up Converter to PV System Under Shading Conditions

曾柏勳(Bo-Xun Zeng)

指導教授 ： 胡國英

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2013年)

摘要

一般來說，太陽能光電轉換系統為了能夠有效的將太陽能電池陣列之輸出功率保持在最大功率點上，需要一直流/直流轉換器來實現最大功率追蹤。另外，太陽能電池陣列輸出為一變動之功率，若要可提供更廣泛的負載需求，則需要具有高電壓增益之轉換器來達到此目的。因此，本論文提出一具有高電壓增益之轉換器，其架構具有簡單且控制容易的優點，並藉由模擬軟體Powersim來模擬所提之電路架構的可行性。緊接著，以實驗結果來驗證所提之電路架構之有效性，以確保可將所提之轉換器應用於太陽能光電轉換系統中。此外，本論文針對太陽能電池陣列於遮蔽效應下，提出了一最大功率追蹤方法，並採用Altera公司所生產之現場可程式邏輯閘陣列晶片EP1C3T100C8N來做為整體電路之控制核心，搭配所提之硬體電路架構，以實現所提之最大功率追蹤方法及全數位化系統控制。最後，藉由Kernel公司所生產之太陽能模擬器PVS01203來驗證所提之最大功率追蹤法搭配所提之電路架構之有效性。

關鍵字

太陽能光電能源轉換系統 ； 升壓型轉換器 ； FPGA ； 最大功率追蹤 ； 擾動觀察法 ； 遮蔽效應 ； 全數位化控制

並列摘要

Generally speaking, in order to effectively keep the output power of the solar cell array at the maximum output power, a DC-DC converter is indispensable for achieving the maximum power point tracking (MPPT). In addition, the output power created from the solar cell array is varied, and hence the DC-DC converter with a high voltage conversion ratio is needed to meet the requirements for the wide range of load. Therefore, a high step-up coverter is presented herein, which possesses simple structure and easy control and is demonstrated by some simulated results based on Powersim and some experimental results so as to make sure that such a converter can be applied to the solar PV system. Above all, the maximum power point tracking method with shading conditions considered is presented. Besides, the field-programmable gate array, named EP1C3T100C8N made by Altera Co., is used as a system control kernal so as to realize the proposed the maximum power point tracking method and the full didgital control of the solar PV system. Finally, the PV simulator, named PVS01203 made by Nippon Kernel System Co., Ltd., is used to verify the effectiveness of the proposed maximum power point tracking method along with the proposed converter.

並列關鍵字

Solar Photovoltaic Energy Conversion System ； High Step-Up Converter ； FPGA ； Maximum Power Point Tracking ； Perturbation and Observation Method ； Shading Conditions ； Full Digital Control

參考文獻

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