Control of Dynamic Voltage Restorer Using Novel Fast Two Vector Phase-Locked Loops Regulator
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PLL Controller (PLL), 48 Pulse Dynamic Voltage Restorer, Two Vector Control, Voltage Sag
Abstract
A fast two-vector Phase-locked loops (PLL) control has been proposed to control the phase and frequency of the grid voltage using 48-pulse switching. The novel controller senses the phase shift of the grid voltage as a frequency deviation by the load and locks to the positive sequence. The controller was designed to track the grid voltage angle and keep the grid frequency within the satisfying range at all times. The PI controller was proposed to obtain the desired performance of the PLL. The fast PLL phase shift of the grid voltage. The test results show that the new design of the controller can control the response of the positive sequence between -1.75p.u to 1.75p.u. With in-phase compensation. The proposed PLL controller has been simulated by using PSCAD/EMTD software package.
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References
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