電氣工程及其自動化
指導教師
摘要：隨著電力電子技術的發展，一種全新的UPS拓撲被提出，即Delta變換型UPS。這種UPS由兩個變換器構成，既保留了傳統在線式UPS的全部在線功能和輸出電壓高質量，又使得很多關鍵性能指標得到改善，不僅消除了對電網的污染，更重要的是輸出能力高、可靠性強，可以說是目前比較理想的UPS系統。首先分析了UPS 電源的現狀和發展趨勢，針對傳統在線式UPS存在的問題，研究了Delta交換型UPS的總體設計方案，將其從功能和結構上分成Delta逆變器和主逆變器兩部分，分析了Delta逆變器和主逆變器的工作機理。接著對Delta變換型UPS的工作特征和技術性能特點進行了分析，并與其他類型UPS進行了對比。最后，列舉了幾種市電常見情況，實例分析，進一步體現了Delta變換型UPS的良好性能。
關鍵詞： 逆變技術；UPS；Delta逆變器；主逆變器
Research Based on Series-parallel Compensating Online UPS in Delta Inverter
Student majoring in Electical Engineering and Automation WangShaoyong
Tutor LiKun
Abstract： With the development of power electronics technology, a new UPS topology is proposed，that is Delta conversion type UPS．This UPS include two converters，not only retain online features of the traditional full-time UPS but also make a lot of improvement in key performance indicators．It eliminates the pollution of power grid，more importantly；it has strong output capacity and high reliability．So it can be said the ideal UPS system．The paper analyses firstly current situation and development trends of UPS．In connection with the disadvantage of traditional on-line UPS，this article researches the design of Delta transforms type UPS，dividing it into two parts in accordance with its function and structure：Delta inverter and main inverter .It also researches the work mechanism of Delta converter and main converter.Then this paper expound on the operation characteristics and technical properties and make comparison between Delta conversion type UPS and other type of UPS.At last,the paper lists common cases in the grid and shows the effective performance of Delta conversion type UPS by the analysis in these cases.
