Hybrid DERs enabled residential microgrid system with MVDC and LVDC bus layout facilities

Abstract

In last few decades, the environmental, social and technical reforms have undoubtedly changed the way energy is produced and consumed. World eco-forum regulations have pressurized the government agencies to initiate and promote renewable energy. A consistent support is offered by the Ministry of New and Renewable Energy (MNRE), India, to install distributed energy resources (DERs) within the residential consumer premises. Integration of multiple DERs within the premises raises various technical issues related to voltage control and power balancing of hybrid DC/AC residential microgrid system. This paper proposes the hybrid solar and wind energy DERs integrated residential premises. A sophisticated multi-terminal converter controller helps in integrating hybrid DERs along with the battery storage stack for operation in both grid connected and islanded modes. Proposed controllers are self adaptive to the frequent islanding situations and ensure system stability during such transients. Further, medium voltage DC (MVDC) = 380.0 V and Low Voltage DC (LVDC) = 48.0 V, bus layouts are proposed for hassle free rectifier-less DC load integrations, in addition to the single phase AC buses lying within the residential premises.