Title :
Modeling microgrids with active loads
Author :
Bottrell, Nathaniel ; Green, Timothy C.
Author_Institution :
Control & Power Res. Group, Imperial Coll. London, London, UK
Abstract :
It is known that active rectifier loads present a negative incremental resistance and have control loop dynamics similar to inverters that may supply a microgrid. To investigate this, a small-signal model of an active rectifier load within a microgrid is developed. The active rectifier load and microgrid are modeled in the synchronous (DQ) reference frame. A participation analysis of the model is performed and modes of the system are identified. The model is verified in a laboratory using rapid prototyping power converters where a set of load perturbations are performed to identify the modes predicted by the participation analysis.
Keywords :
approximation theory; distributed power generation; distribution networks; eigenvalues and eigenfunctions; invertors; rectifying circuits; active loads; active rectifier loads; control loop dynamics; distributed generation; eigenvalue analysis; inverter-based microgrid distribution networks; linear approximation; load perturbations; microgrid modeling; negative incremental resistance; participation analysis; rapid prototyping power converters; small-signal model; synchronous reference frame; Bridge circuits; Equations; Inverters; Load modeling; Mathematical model; Switches; Voltage control; active loads constant power loads; microgrids; rectifier; rectifier model; small-signal stability; state-space model;
Conference_Titel :
Control and Modeling for Power Electronics (COMPEL), 2012 IEEE 13th Workshop on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4244-9372-2
Electronic_ISBN :
1093-5142
DOI :
10.1109/COMPEL.2012.6251748
