A comprehensive review on Bidirectional traction converter for Electric vehicles

In this fast-changing environmental condition, the effect of fossil fuel in vehicle is a significant concern. Many sustainable sources are being studied to replace the exhausting fossil fuel in most of the countries. This paper surveys the types of electric vehicle’s energy sources and current scenario of the on-road electric vehicle and its technical challenges. It summarizes the number of state-of-the-art research progresses in bidirectional dc-dc converters and its control strategies reported in last two decades. The performance of the various topologies of bidirectional dc-dc converters is also tabulated along with their references. Hence, this work will present a clear view on the development of state-of-the-art topologies in bidirectional dc-dc converters. This review paper will be a guide for the researchers for selecting suitable bidirectional traction dc-dc converters for electric vehicle and it gives the clear picture of this research field

Design and Analysis of a Sustainable LV Residential Microgrid

AbstractIn the present scenario, power cuts are daily occurrences in many parts of the world. People all over the world would like to avoid these unscheduled power cuts and have a reliable, secure and clean electricity. For an affordable energy usage, sustainable power generation with renewable resources are highly recommended for environment friendly generation of energy with lower carbon footprints. They are isolated from the utility grid in case of any power outage or power blackouts. The key objective of this work is to model a self-sustained microgrid from the existing Indian distribution feeder, which means a small scale interconnected, centralized single controllable system where the particular arena is supplied with distributed energy resources like solar and wind instead of the main grid. The existing system of a particular region supplied with 42 bus system layout connected with 100 KVA transformer. Wind and the solar sources are designed individually and this hybrid energy is interconnected with the layout model to make up a small, modern self-sustained grid called the microgrid. The results are obtained in PSCAD software package with several case studies

Dynamic Analysis of Extendable Hybrid Voltage Lift DC–DC Converter for DC Microgrid

This paper proposes a novel non-isolated high voltage gain dc–dc converter with a boost2 (B2) technique. The derived single-switch hybrid voltage-lift topology generates a higher voltage conversion ratio with less component counts than traditional voltage-lift converters. Furthermore, to show its superiority, the proposed topology is compared with other recent non-isolated dc–dc converters in terms of the number of power components such as inductors, capacitors, diodes, and switches. Moreover, the voltage stress across the power switch is less than the output voltage, which results in using low-rated components and reducing the converter cost. The steady-state analysis of the proposed topology is carried out with the operating modes in continuous and discontinuous conduction modes. The critical inductance for the proposed converter is derived for design considerations. Compared to the other traditional step-up converters, the stresses across the power diodes are highly reduced. The analysis related to the addition of an expander cell with the topology is performed concerning boundary conditions. An efficiency model with loss calculation is presented. Furthermore, the reliability analysis is performed with the military handbook to determine the failure rate of the converter’s components. Finally, the simulation and 50 W prototype model for experimental validation prove the strength of the proposed topology

Performance investigation of 140 kW grid connected solar PV system installed in southern region of India-A detailed case study and analysis

This article focuses on the performance assessment of a grid-connected 140-kW photovoltaic (PV) plant which is installed on the roof of an aerospace hanger block located at the SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India. The installed unit comprises of seven parallel strings, each comprised of 60 modules. Each of the seven strings is separately connected to an individual inverter (Delta RPI-M20A), i.e., a string inverter of 20 kW. An investigation deals with parameters recorded based on the average of daily, monthly, and yearly data such as AC and DC energy generated, reference yield, array yield and final yields, performance ratio and capacity factor. In the year 2020, the total power generated by the proposed project site is 139,125 kW. Further, the average reference yield varied from a minimum of 118.9 (hr/mth) to a maximum of 197.6 (hr/mth). Similarly, the average final yield varies from 86.14 (hr) to 135.61 (hr). The capacity factor and performance ratio are found to have a maximum of 18.83% and 80.29% and a minimum of 11.96% and 64.14%, respectively. Thus, this article helps readers identify the practicability and sustainability of solar-powered PV systems in rural and remote locations.The authors would like to thank the SRM Institute of Science and Technology, Kattankulathur campus for supporting this research work.Scopu