US 11,742,666 B2
Method for synchronizing an active load with a microgrid using a proportional integral controller
Mohammed Ali Ali Hassan, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Jan. 24, 2019, as Appl. No. 16/256,392.
Prior Publication US 2020/0241489 A1, Jul. 30, 2020
Int. Cl. G05B 13/04 (2006.01); H02J 3/38 (2006.01); H02J 3/40 (2006.01); H02J 3/06 (2006.01); H02J 3/46 (2006.01)
CPC H02J 3/381 (2013.01) [G05B 13/042 (2013.01); H02J 3/06 (2013.01); H02J 3/40 (2013.01); H02J 3/46 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for synchronizing an active load with a microgrid having a plurality of distributed generators, comprising:
obtaining a dq reference frame for the active load and dq reference frames for each of the plurality of distributed generators,
wherein each respective reference frame rotates at a respective angular frequency,
selecting the dq reference frame of a first distributed generator as a common dq reference frame for the microgrid;
determining a phase angle of a d component and a phase angle of a q component of the active load with respect to the common dq reference frame of the microgrid;
determining a phase angle of each d component and a phase angle of each q component for each of the distributed generators of the plurality of distributed generators with respect to the common dq reference frame of the microgrid:
determining controller parameters of a proportional integral controller of the active load and controller parameters of proportional integral controllers of each of the plurality of distributed generators by performing a particle swarm optimization to solve a weighted objective function of the active load and the plurality of distributed generators; and
tuning the proportional integral controller parameters of the active load and the proportional integral controller parameters of each of the plurality of distributed generators based on the solution to the weighted objective function so that the phase angle of the d component and the phase angle of the q component of the active load and the phase angle of each d component and the phase angle of each q component for each of the distributed generators of the plurality of distributed generators are synchronized to the common dq reference frame;
wherein the proportional integral controller gain parameters are adjusted based on at least one droop controller gain of the microgrid.