Power management and control strategies for efficient operation of a solar power dominated hybrid DC microgrid for remote power applications
Mendis, N., Mahmud, M. A., Roy, T. K., Haque, M. E. and Muttaqi, K. 2016, Power management and control strategies for efficient operation of a solar power dominated hybrid DC microgrid for remote power applications, in IACC 2016 : Proceedings of the 51st IEEE IAS Industrial Automation and Control Committee Annual Meeting, IEEE, Piscataway, N. J., pp. 1-8, doi: 10.1109/IAS.2016.7731816.
In this paper, a hybrid DC microgrid consisting of a diesel generator with a rectifier, a solar photovoltaic (PV) system, and a battery energy storage system is presented in relation to an effective power management strategy and different control techniques are adopted to power electronic interfaces. The solar PV and battery energy storage systems are considered as the main sources of energy sources that supply the load demand on a daily basis whereas the diesel generator is used as a backup for the emergency operation of the microgrid. All system components are connected to a common DC bus through an appropriate power electronics devices (e.g., rectifier systems, DC/DC converter). Also a detailed sizing philosophy of all components along with the energy management strategy is proposed. Energy distribution pattern of each individual component has been conducted based on the monthly basis along with a power management algorithm. The power delivered by the solar PV system and diesel generator is controlled via DC-DC converterand excitation controllers which are designed based on a linearquadratic regulator (LQR) technique as as proportional integral (PI)controllers. The component level power distribution is investigatedusing these controllers under fluctuating load and solar irradiationconditions and comparative results are presented.
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