Abstract—Among the various power quality problems, the voltage sags, are attracting a large amount of attention of researchers from industry. Dynamic Voltage Restorer(DVR) gives the solution to the above mentioned problem. The main function of DVR is to mitigate the voltage sag. It controls voltage applied to the load by injecting voltage of compensating amplitude, frequency and phase angle to the distribution line. The DVR is primarily responsible for restoring the quality of voltage delivered to the end user when the voltage from the source is not appropriate to be used for sensitive loads. Usage of DVR enables consumers to isolate and protect themselves from transients and disturbances caused- by sags. DVR is simulated using Matlab and it is implemented using microcontroller 89C2051. The experimental results are compared with the simulation results.

Index Terms—DVR, Matlab, Microcontroller 89C2051

N. S. Sakthivel Murugan is research scholar of Anna University, Chennai.(Phone: +914285 228361; Mobile: +90 9003555134).
A. Nirmalkumar was with N. S. S. College of Engineering, Palakkad, Kerala, India. He is now with Bannari Amman Institute of Technology, Sathyamangalam, 638476 Erode(Dt.), Tamilnadu, India.
T. Vijayakumar was with Kumaraguru College of Technology, Coimbatore and is now with Karpagam college of Engineering, Coimbatore, Tamilnadu. India.

Cite: N. S. Sakthivel Murugan, A. Nirmalkumar, and T. Vijayakumar, "Implementation of H Bridge Inverter Based DVR Using Atmel 89c2051," International Journal of Computer and Electrical Engineering vol. 1, no. 4, pp. 443-448, 2009.