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China Machinery Industry Standard (CMIS) GB/T 12326-2008 prescribed in the islanded operation mode, microgrid inverter (MGI) output voltage dynamic transient range is less than 10% when the resistive load is switched rapidly between 0% and 100%. The three-loop power virtual synchronous generator (VSG) control methods are commonly used in MGI units to share the loads among the parallel MGIs. However,...
Microgrid should be operated in both grid-connected and islanded mode to ensure high voltage quality and reliability. In the case of continuous uninterrupted power supply, seamless transfer is important between the two modes,and synchronization of the voltage of the point of common coupling (PCC) and utility grid should be finished first to achieve the goal. In this paper varies of synchronization...
Compared to L-type filter, LCL-type filter have resonance frequency point, consequently reduce the reliability of the VSC converter. The general control strategy with passive damping or active damping can improve the stability of the converter, but it will bring extra loss, and need more sensors. This paper compare and analysis the performance of LCL converter controller with different feedback variables...
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