PLL based method for control of grid connected inverter for unbalanced grid frequency

  Rutvik Desai,  Smit Patel,  Priyanka Patel

The increase interest in renewable energy production together with higher and higher demand from the energy distribution companies regarding grid energy injection and grid support in case of a failure raises new challenges in terms of control for DC systems. Due to the above mentioned, grid side inverter control is one of the main issues in decentralized power production units. In order to feed power to utility a GCI is required as interfacing equipment. This paper deals with the design and implementation of PLL based control method for the grid connected inverter. The control method should give less THD in inverter O/P current and the inverter O/P current should be in phase with grid voltage so it gives unity power factor operation. The PLL based control technique for grid-connected inverter is simulated using MATLAB software. The case of unbalanced grid frequency is considered and simulated using MATLAB software package. This method works well with variation in grid frequency and give minimum THD and Unity Power Factor.

Keywords- Phase Lock Loop (PLL), Grid Connected Inverter (GCI), Unbalance Frequency

Unique Identification Number - IJEDR1702163
Page Number(s) - 969-974
Pubished in - Volume 5 | Issue 2 | May 2017
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Rutvik Desai,  Smit Patel,  Priyanka Patel,   "PLL based method for control of grid connected inverter for unbalanced grid frequency", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.5, Issue 2, pp.969-974, May 2017, Available at :http://www.ijedr.org/papers/IJEDR1702163.pdf