Modelling, Design, and Control of Smart DC Microgrid for Integration of Various Non-conventional Distributed Generators

In this chapter, the architecture of “smart DC microgrid” has been described for integrating various non-conventional distributed energy resources, both renewable and non-renewable distributed generators (DGs), using power electronic converters. The proposed ring-type smart DC microgrid (DCMG), based on DC power pool, is able to supply the power to both DC and AC loads simultaneously and can operate in islanded and grid-connected modes under various operating scenarios. The proposed smart DCMG consists of wind turbine (WT), solar photovoltaic (SPV), and solid oxide fuel cell (SOFC) DGs, battery energy storage system, and various DC and three-phase as well as single-phase AC loads. The objective of this chapter is to describe the smart DCMG, modelling, and design of various components of the DCMG, such as DGs and their associated voltage source converters (VSCs), and control strategies for the satisfactorily operation of the proposed DCMG under autonomous coordinated controlled mode. A control strategy of the bidirectional three-phase VSC for integrating the WT DG has also been presented in this chapter. The performance analysis of the smart DCMG along with the developed control strategies is also carried under different operating scenarios in this chapter.