Modeling and control of a solar-thermal dish-stirling coupled PMDC generator and battery based DC microgrid in the framework of the ENERGY NEXUS

• Published in: Energy nexus Vol. 5; p. 100048
• Main Authors: Dhaked, Dheeraj Kumar, Birla, Dinesh
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 16.03.2022; Elsevier
• Subjects: Battery; DC-DC converter; Microgrid; Solar PV; State of charge (SOC); DC-DC converter; Microgrid; State of charge (SOC); Solar PV; Battery
• ISSN: 2772-4271; 2772-4271
• DOI: 10.1016/j.nexus.2022.100048

•STDS with battery storage in an islanded microgrid for feeding the variable load is used.•A control scheme and power management for proposed islanded DCMG system has been also developed.•PMDC has efficiency ≈30%, supply energy in steady state and in transient time battery fulfils it.•SOC variation and irradiance change with dynamic load is considered for feasibility analysis.•Unidirectional & bidirectional converter used with PMDC & battery respectively to connect with DC grid . In this paper a control scheme and power management technique for solar-thermal dish-Stirling and battery based islanded DC microgrid system has been developed for the nexus of energy. This paper has used the solar-thermal dish-Stirling with battery storage in an islanded microgrid for charging purpose of battery for the first time which is also feeding the variable load. The PMDC generator provides the energy in steady state and transient time energy is fulfilled with connected battery storage. Here a charging strategy based on the PMDC generator output that alters with irradiance and temperature mostly and a battery integrated DC microgrid is developed. Unidirectional DC-DC converter is employed with solar-thermal dish-Stirling coupled PMDC generator and a bidirectional DC-DC converter connected to battery and DC grid with controller and power management strategy in varying state of charge and irradiance. A Matlab model of microgrid structure is implemented to check the feasibility along with dynamic load and irradiance.