具低電壓穿越能力之市電併聯PV換流器

Abstract

本文主旨在提出一個最大電流振幅控制策略，使太陽光電系統具有低電壓穿越的能力。而本文所提出的最大電流振幅控制策略能依據太陽能電池輸出功率的條件以及市電併聯換流器的額定輸出功率來產生實功及虛功之命令。本文所提出的最大電流振幅控制策略能夠簡單的符合各種不同的低電壓穿越法規。本論文，將會詳細的介紹太陽光電系統最大電流振幅控制略之分析推導，且經由電腦模擬來驗證本文所提出的控制法則的效果。

The objective of this thesis is to propose a maximum current amplitude control (MCAC) for the Photovoltaic (PV) power system with the low-voltage ride-through (LVRT) capability. The proposed MCAC strategy can generate the demanded active and reactive power depending on the output power condition of the PV array and the power rating of the grid-tied inverter. It can be adapted to meet different LVRT grid codes, easily. In this thesis, the analytical derivation of the proposed MCAC for the PV power system will be introduced in detail. Computer simulations are shown to verify the performance of the proposed MCAC.