Escalation in electricity consumption and environmental pollution worldwide necessitates the need for alternative and sustainable energy sources other than conventional sources. Therefore, in this article, renewable energy-based microgrid is presented to cater such needs. Different feasible microgrid topologies are determined and analyzed to meet the demand of the proposed site. The feasibility evaluation of the different microgrid configurations is performed based on the cost factors and carbon dioxide (CO 2 ) emissions. The optimum configuration is selected based on the minimum cost of annual operating charges, annual energy charges and annual social cost of CO 2 emissions taken altogether. Besides this, the comparison of the various configurations is also performed on the basis of net present cost, capital expenditure and cost of energy. For analysis, the site profile and load profile of Jamia Millia Islamia University, India, are taken. The optimization is performed in HOMER. It is obtained from the simulation results that the microgrid configuration comprising grid-solar photovoltaic-wind turbine is found to be best suited for the proposed site based on various parameters. Furthermore, the efficacy of the proposed system is compared with conventional grid-only system.

Access to reliable electricity is one of the key enablers of social and economic development. Smart energy and electricity network are one of the key factors in making a city smart; a detailed analysis considering aspects like environmental, energy, economic and societal impacts have to be done for their harmonized inclusion in the smart city design. Increasing energy demand and environmental concerns has led the way for cost effective microgrids with energy storage and backup generation which helps in minimizing energy imbalance, reducing losses and carbon emission, enhancing the overall reliability and resilience of the system. This paper first discusses the main impact of deployment of microgrids in smart cities considering different aspects like societal, economic and environmental. In the later stages of the paper a benefit analysis of microgrids adoption in one of the smart city located in the state of Uttar Pradesh is presented in terms of reliability enhancement and reduction of system losses.

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Environmental issues and the depletion of fossil fuel resources cause increased demand for electric vehicles. An electric vehicle consists of two main components: a propulsion system and a battery charger. The design of an efficient, fast and economical charger is key to its success. Therefore, this paper presents a novel design of a dual active bridge‐based bidirectional converter with logical control for an electric vehicle application. The logical control of the converter enables the power flow between the grid and the electric vehicle and vice versa. The power flow is based on the single‐phase shift method. The converter selects the mode of operation based on the battery's state of charge and the user command using a binary switch. The power requirement influences the design of the circuit's parameters of the electric vehicle battery. A 50 V, 100 Ah, and 5 kW Li‐ion battery and AC power source of 230 V, 50 Hz are used in the simulation work. The circuit performance is verified in the SIMULINK/MATLAB environment. The analysis of the converter gives better control for various state‐of‐charge levels of electric vehicle batteries.