Design of Synchronization Controller for Reconnection between Microgrid and Utility Electric Power System
| Autor: | Zhao-Xian Chen, 陳昭憲 |
|---|---|
| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 This paper is aimed to design a synchronization controller for microgrid, which control the microgrid to operate in islanding mode, resynchronize with and reconnect to the grid. Estimate the phase angle through the phase locked loop(PLL) by measuring the three-phase voltage on both sides of the point of common coupling(PCC). Then, utilize the synchronization controller to reduce the phase difference between grid and microgrid, conforming the standard in IEEE 1547 std. Synchronization control is necessary to avoid the unstable situation causing by two system are not synchronized. The accuracy of the phase detection may be affected by the poor power quality. To overcome the situation such as imbalance, harmonic distortion, dual second order generalized integrator PLL(DSOGI-PLL) is adopted for a basis of synchronization controller. Through the Matlab/Simulink, an inverter is simulated as microgrid. Discussing the process of resynchronizing with the grid, thus confirm the feasibility of the proposed synchronization controller. The hardware is based on a three-phase four-wire half-bridge converter as an inverter, using the Renesas RX62T microprocessor to implement the controller design. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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