Stability and control of ad hoc dc microgrids
Author(s)Belk, Julia A.; Inam, Wardah; Perreault, David J; Turitsyn, Konstantin
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Ad hoc electrical networks are formed by connecting power sources and loads without pre-determining the network topology. These systems are well-suited to addressing the lack of electricity in rural areas because they can be assembled and modified by non-expert users without central oversight. There are two core aspects to ad hoc system design: (1) designing source and load units such that the microgrid formed from the arbitrary interconnection of many units is always stable and (2) developing control strategies to autonomously manage the microgrid (i.e., perform power dispatch and voltage regulation) in a decentralized manner and under large uncertainty. To address these challenges we apply a number of nonlinear control techniques-including Brayton-Moser potential theory and primal-dual dynamics-to obtain conditions under which an ad hoc dc microgrid will have a suitable and asymptotically stable equilibrium point. Further, we propose a new decentralized control scheme that coordinates many sources to achieve a specified power dispatch from each. A simulated comparison to previous research is included.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Department of Mechanical Engineering
2016 IEEE 55th Conference on Decision and Control (CDC)
Institute of Electrical and Electronics Engineers (IEEE)
Belk, Julia A. et al. “Stability and Control of Ad Hoc Dc Microgrids.” 2016 IEEE 55th Conference on Decision and Control (CDC), December 12-14 2016, Las Vegas, Nevada, USA, Institute of Electrical and Electronics Engineers, December 2016: 3271-3278 © 2016 Institute of Electrical and Electronics Engineers (IEEE)