Active Power Transfer Enhancement in VSC using Impedance Compensated DSRF-PLL during Weak Grid Condition
Atul Kunpara1, Vithal N. Kamat2
1Atul Kunpara, Dept. of Electrical Engineering, Gujarat Technological University, Ahmedabad, India.
2Vithal N. Kamat, Managing Director, Baroda Electric Meters Ltd., New Vallabh Vidhyanagar, India.

Manuscript received on November 20, 2019. | Revised Manuscript received on November 26, 2019. | Manuscript published on 30 November, 2019. | PP: 2963-2966 | Volume-8 Issue-4, November 2019. | Retrieval Number: D7134118419/2019©BEIESP | DOI: 10.35940/ijrte.D7134.118419

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Abstract: In last two decades the use of renewable sources has been increased tremendously. This has increased the number of inverters connected to grid for the integration of energy from renewable sources. The stability of grid tied inverter is very much important with increased number of inverters. Especially in weak grid, which leads to voltage fluctuation, stability of inverter needs more attention. For a stable operation of VSC it is very important to detect the phase of grid voltage at point of common coupling (PCC) with proper accuracy. In this paper a Double Synchronous Reference Frame PLL (DSRF-PLL) with grid impedance compensation is presented. It is shown that with grid impedance compensation in phase detection, a VSC can be virtually synchronized at a stronger point of common coupling (PCC) in grid and this will enhance the active power transfer capacity of VSC with stable operation in weak grid condition. MATLAB simulation results are presented to verify the findings.
Keywords: DSRF-PLL, Impedance Compensation, Grid Tied Inverter etc.
Scope of the Article: Wireless Power Transmission.