Digital Delta Type UPS Design And Research

This paper studies the Delta type UPS and traditional UPS compared performance increased significantly. It can solve the existing UPS low efficiency, poor stability, load ability is limited, etc. Through the application of the embedded technology also greatly improved human-computer interaction of UPS and communication ability. Make UPS full digital become possible.Firstly, a detailed analysis on the Delta type the working principle, then UPS are given respectively Delta converter and Lord in three-phase converter static coordinates (ABC) under the mathematical model. After the coordinate transformation were obtained in two-phase rotating coordinates (DQ) under the mathematical model. Then this paper UPS existing control approach compared, what choose finally direct current control as a Delta converter control method, choose the instantaneous comparison with repetitive control as the main circuit and control method. And in PSIM simulation software of simulation model established respectively, observe different control method of control effect.Finally, this paper fully utilizing laboratory existing condition built hardware experiments platform on the Delta type UPS done the experiment. Through the experiment further demonstrates the selected control method of the correct type, and Delta type UPS excellent performance.