The history, culture, current and future socio-economic status and environmental sustainability of India and its people are intricately linked to the water resources which are available from dams. These water resources available through dams are one of the main sources available for the usage to industries, livestock, irrigation etc. and there is a critical need to ensure the safety of the water level at these dams against any natural or anthropogenic threats and to develop an effective Water Level Management system using IoT. This paper gives an outline for the development of an information system based on the existing systems with the utilization of some sensors and IoT. This paper also proposes a novel idea of collecting and sharing real-time information about water levels to an authorized central command center through far field communication. The authorized central command center then takes a call whether to release the water by opening dam gates or keep them closed. By doing so, the operation of dams all over the country is centralized and automatized.

Super capacitors have the ability of high power densities for longer charging (or) discharging cycles. Material used in the super capacitors effects the performance of the device. It is obvious that the material used in super capacitors shall increase the energy density for smaller volumes while maintain the cycle stability. The right structure of super capacitors should exhibit best mechanical and electrical properties. The analysis of the above properties can be discussed by looking into the microstructure, elemental structure, etc. of the materials used. In this paper, scanning electron microscopy and energy dispersive X-ray analysis are performed on a super capacitor to study the microstructure and elemental parameters. This analysis will help in determining the electrical and mechanical properties of the super capacitors.

This paper deals with the design and modelling aspects of hybrid energy storage system (HESS) used in Electric vehicles. Modelling of HESS includes modelling of battery, Ultra-capacitor and the vehicle load modelling for Light electric vehicle used in the work. A detailed analysis for vehicle load is carried out to find out capacity of motor, battery and ultra-capacitor in both acceleration and in regenerative braking. This paper also discusses different types of converters used in HESS for electric vehicle application along with its suitability to the light electric vehicles. The HESS in this work uses a bidirectional dc/dc converter along with battery and ultra-capacitor. A simple power sharing algorithm based on heuristic approach is presented to ensure the different modes of operation of electric vehicles. From the performance analysis at different speeds and at different gradients it is concluded that HESS reduces the size of the battery, weight of the system. Due to this the range of the vehicle can be improved in a single charge.

Magnetic resonance coupling (MRC) based wireless power transfer (WPT) system is recognized as an efficient and promising technology for safe, convenient and elegant charging solution for various electronic portable devices. MRC technology helps in transferring power wirelessly from transmitter to receiver over larger distances. However in such loosely coupled systems, low power transfer efficiency is the major issue in comparison to conventional wired charging systems. The paper presents detailed analysis of power transfer efficiency between two independent coils separated by distance of 15 cm. The analysis involves an effect of coil geometrical dimensions on power transfer efficiency and mutual inductance between transmitter (T_X) and receiver coils (R_X). In addition, the investigations are further extended to analyze the role of shielding and effect of shielding geometry on power transfer efficiency and mutual inductance between the two coils.

Wireless transfer of power is an ever growing field of technology which has a wide array of applications ranging from charging of electric vehicles (EVs) to small devices such as medical implants. This can be implemented through highly resonant near field coupling of electromagnetic resonators. This work primarily focuses on the development of a wireless power transformer for implanted medical devices having low power requirement such as implantable pulse generators and pacemakers. This is accomplished by designing and implementing a four coil system consisting of a high efficiency wireless power transformer that can transfer sufficient energy to charge small devices from a reasonable distance up to 25 mm. Wireless charging can provide a safer and hassle free alternative to the conventional wired biomedical devices.

Wireless power transfer (WPT) is the technology which enables transfer of electric power without wires. It is based on the principle of electromagnetic induction. There are two main modes of WPT, inductive and resonance based coupling. In either of these methods, for the highest possible efficiency to be achieved, the transmitter and receiver coil should be aligned perfectly with each other, but in real world WPT applications, there is always some amount of misalignment between the transmitting and receiving coils. Therefore, it is important to study the effects of coil misalignment to identify and make the necessary design changes to maintain the efficiency of power transfer. This paper presents a simulation analysis on the effect of coil misalignments in a resonance coupled four coil WPT system and the effects of lateral misalignment have also been analyzed and documented.