电气工程及其自动化
指导教师
摘要：随着电力电子技术的发展，一种全新的UPS拓扑被提出，即Delta变换型UPS。这种UPS由两个变换器构成，既保留了传统在线式UPS的全部在线功能和输出电压高质量，又使得很多关键性能指标得到改善，不仅消除了对电网的污染，更重要的是输出能力高、可靠性强，可以说是目前比较理想的UPS系统。首先分析了UPS 电源的现状和发展趋势，针对传统在线式UPS存在的问题，研究了Delta交换型UPS的总体设计方案，将其从功能和结构上分成Delta逆变器和主逆变器两部分，分析了Delta逆变器和主逆变器的工作机理。接着对Delta变换型UPS的工作特征和技术性能特点进行了分析，并与其他类型UPS进行了对比。最后，列举了几种市电常见情况，实例分析，进一步体现了Delta变换型UPS的良好性能。
关键词： 逆变技术；UPS；Delta逆变器；主逆变器
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.
