A high-performance digital controller for high-power three-phase UPS by using one DSP

2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia) Pub Date : 2016-05-22 DOI:10.1109/IPEMC.2016.7512438

Zhi Zhang, Chang Liu, Yuan Yao, L. Kang

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引用次数: 3

Abstract

This paper focuses on the key technologies and its industrialization of high-power three-phase uninterruptible power supply(UPS) system. Firstly, the mathematical model of three-phase three-level VIENNA rectifier and three-phase two-level inverter were established respectively. The multiloop control method was realized based on the DQ coordinates, and a simplified three-level space vector pulse width modulation method which could simplify the calculation was proposed for the VIENNA rectifier. A composite control method of PI control and synchronous-frame repetitive control strategy was proposed to improve the quality of output inverter waveform. In order to improve the dynamic response of DC-bus, a power forward control strategy was proposed for the whole system. The whole system keeps unit power factor in the input side and pure sine voltage in the output side. The modulation and control method of three-phase three-level UPS was implemented in one DSP(digital signal processor). Experimental results of the 200kVA UPS system show that the proposed modulation and control method was correct and effective.

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采用单DSP实现大功率三相UPS的高性能数字控制器

本文主要研究大功率三相不间断电源(UPS)系统的关键技术及其产业化。首先，分别建立了三相三电平VIENNA整流器和三相两电平逆变器的数学模型。基于DQ坐标实现了多环控制方法，并针对VIENNA整流器提出了简化计算的三电平空间矢量脉宽调制方法。为了提高逆变器输出波形的质量，提出了PI控制和同步帧重复控制的复合控制方法。为了改善直流母线的动态响应，提出了一种针对整个系统的功率前向控制策略。整个系统的输入端为单位功率因数，输出端为纯正弦电压。在一个DSP(数字信号处理器)上实现了三相三电平UPS的调制控制方法。200kVA UPS系统的实验结果表明，所提出的调制控制方法是正确有效的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)

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