دانلود رایگان مقاله انگلیسی اجرای روش کنترل جریان مبتنی بر بردار جدید در تنظیم ولتاژ خازن - IEEE 2017

Abstract

This paper introduces a novel current control method to regulate the capacitor voltage of DStatcom and thereby improve the quality of electrical power in the distribution system continuously. Proportional Integral controller seems to be appropriate in regulation of voltage and that is limited to some extent. The proposed control strategy regulates the capacitor voltage of DStatcom along with elimination of power quality problems. A vector based Hysteresis current controller is used with hysteresis comparators in multilevel integrated with a switching table which shows fast transient response for load parameter variations. An evaluation is carried out with MATLAB/Simulink and it shows excellent performance. The performance of the method is found good for DStatcom with both balanced linear and nonlinear loads.

CONCLUSION

A Quality distribution system has been designed by connecting DStatcom in shunt and made to act as active filter. Pulse Width Modulated techniques is applied to Voltage Source Converter in DStatcom connected to non-linear load along with a balanced resistive load. The performance of the system has been discussed in terms of power quality improvement. Harmonic elimination and voltage profile maintenance of the distribution is done by Multilevel Hysteresis current controller. Further PI controller is found good in maintaining DC Capacitor voltage at the desired level with less overshoots and undershoots caused by the variation in load. Controller coordination and the overall performance of the system found good with these controllers for these loads. Different new controls methods can be employed to test the system under these conditions and various other loading conditions. The same system with the same performance can be implemented in real time in the near future.