R. Narayanamoorthi ¹, A. Vimala Juliet ¹, G. Santhoshkumar ¹, K. Selvakumar ¹

Affiliations
1 Faculty of Engineering and Technology, SRM University, Kattankulathur - 603203, Tamil Nadu, IN

Abstract

Objective: The main theme of this paper is to eliminate the frequency split in short range Wireless Power Transfer (WPT) system by magnetic resonance coupling. Analysis: The common basic two coils based magnetic resonance WPT system is taken for the analysis; the frequency and transfer coefficient are plotted for different dimensions of the coil. Using genetic algorithm, the lumped impedance parameters are determined, which is used for the tuning of the active matching circuit. Based on the experimental results it has been observed that the frequency split can be eliminated by tuning the matching circuit properly for the corresponding distance and higher efficiency can be achieved for short range. Findings: The frequency split elimination techniques can be used in dynamic transmitter and receiver wireless charging system. Application: This system can be employed in short range wireless power transfer such as neural implants, capsule robots, micro-robots and electric vehicle charging and so on.

Keywords

Maximum Energy Efficiency, Magnetic Resonance, Wireless Charging.

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Monica P. Suresh ¹, A. Vimala Juliet ²

Affiliations
1 Department of EEE, St Peter’s University, Chennai - 600054, Tamil Nadu, IN
2 Department of ICE and EIE, SRM University, Katankalathur, Chennai - 603203, Tamil Nadu, AX

Abstract

Objectives: Unlike conventional micro-pumps which have valves that fail as they keep flapping twice during each pumping cycle and a separate micro-needle array, through which drug is injected. The design here uses a micro-pump without moving valves and with the micro-needles integrated with the micro-pump itself. Method/Statistical Analysis: The dimensions for the micro-pump and the micro-needles are chosen based on the physical characteristics of the fluid that needs to be pumped (in this case insulin density, viscosity, size of the particles in the fluid etc). The model is constructed and simulated using COMSOL multi-physics software. Findings: The model is simulated to check the volume of liquid pumped during each cycle and to see if the model constructed remains stable when potential is applied to the actuating membrane. The simulation results showed that the micro-pump model constructed is stable under various levels of applied potential (+200V to -200V), results of which are presented in the following sections. It was also observed that the dead volume of fluid that is left in the pumping chamber is less as compared to the conventional model. Application/Improvement: This micro-pump was designed especially for insulin delivery. The actuation method being piezo-electric, the volume of fluid pumped can be altered by varying the frequency of the applied potential or the amplitude of the applied voltage. This model can still be improved if it can be integrated with a glucose sensor. Based on the level of the glucose measured the insulin to be delivered can be altered.

Keywords

Diffuser, Micro Pump, Micro Needles, Nozzle, Piezo-Electric Actuator, Valveless.

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R. Narayanmoorthi ¹, A. Vimala Juliet ¹, Omkar Mohapatra ¹, A. Dominic Savio ¹

Affiliations
1 Faculty of Engineering and Technology, SRM University, Kattankulathur - 603203, Tamil Nadu, IN

Abstract

Objective: The motivation of the work is to track the maximum efficiency of magnetic resonance based wireless power transfer system which uses either two, three or four coils. Analysis: The system consists of two sections namely transmitter side and receiver side, where the supply is given to the transmitter side and when any receiver is connected to the load by tracking the maximum energy efficiency operating point of the system and controlling the duty cycle ratio. The analysis is carried out for 2, 3 and 4 coil system in simulation and experimental test setup. Findings: This paper implements the maximum energy efficient tracking method for the 2, 3 and 4 coil wireless power transfer system. Applications: This system can be employed in electric vehicle charging, Bio implants, micro robots and so on.

Keywords

Magnetic Resonance, Maximum Energy Efficiency, Wireless Charging.

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R. Narayanamoorthi ¹, A. Vimala Juliet ¹, G. Santhoshkumar ¹, K. Selvakumar ¹

Affiliations
1 Faculty of Engineering and Technology, SRM University, Kattankulathur-603203, IN

Abstract

Objective: The main theme of this paper is to analyze the wireless power transfer system efficiency in real time with different medium, distance and angle between the source and load coil. Analysis: The transmitter side of Wireless Power Transfer (WPT) system connected to the supply and receiver side is connected with load. The analysis is carried out for 2, 3 and 4 coil system in experimental test setup. Based on the experimental results it has been observed that the 4 coil WPT system gives better performance as compared with other two. Also it shows higher efficiency, if the angle of orientation of the load coil is small with the source coil.Findings: The four coil WPT system can be used in low power wireless charging devices with the distance of 3 to 15c.m between transmitter and receiver. Application: This system can be employed in electric vehicle charging, Bio implants, microrobots and so on.

Keywords

Magnetic Resonance, Maximum Energy Efficiency, Wireless Charging.

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Sanchanna Ganesan ¹, A. Vimala Juliet ¹, C. Likith Kumar Reddy ¹

Affiliations
1 Department of Electronics and Instrumentation, SRM University, Kattankulathur, Chennai - 603203, Tamil Nadu, IN

Abstract

Objectives: To design a Sensor for the detection of bacteria in water and food like unpasteurized milk, undercooked beef, juices, soft cheeses made from raw milk etc. Methods: COMSOL 4.4 simulation tool is used to design the micro post array that captures the bacterial cell (E.coli) in the food samples. Findings: We propose a new approach in MEMS sensor design on paper substrate for the detection of bacteria in water and food. Paper based MEMS sensor are said to be less cost easily used and disposable, on sight implemented, bio compatible and easily fabricated. Application: The paper based MEMS is a raising technology particularly in the field of food quality control and food testing, health diagnostic, environmental monitoring.

Keywords

Biosensor, E.coli, Food Safety, Micro Electrical Mechanical System (MEMS), Micro Fluidics, Paper.

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P. Ramani Ranjan Senapati ¹, J. Sam Jeba Kumar ², A. Vimala Juliet ³

Affiliations
1 Department of Electronics and Control Engineering, SRM University, Chennai - 603203, Tamil Nadu, IN
2 Department of Instrumentation and Control, SRM University, Chennai - 603203, Tamil Nadu, IN
3 Department of Electronics and Instrumentation, SRM University, Chennai - 603203, Tamil Nadu, IN

Abstract

Objective: Proper site selection of an electric vehicle to transfer the optimal power from grid to vehicle in a car park infrastructure. Analysis: In this sense, Fuzzy Logic Controller is designed in NI based LabVIEW platform. The controller is simulated through the graphical designing software, which has the capability of easy data acquisition, processing, monitoring and controlling. After that the practical application of this software in automobile industry provides a better performance of the respective unit which can reduce the cost and save the time. Findings: In this near future, electric and hybrid electric vehicles will play an important role in Intelligent Transportation Systems (ITS). Since these vehicles use electricity as their primary fuel, it provides one of the most anticipating approaches towards the reduction of exhaust gas pollution. It has more or less impact on local or global emission profiles. Inductive charging station is a form of wireless charging workplace which uses electromagnetic field to transfer the energy from charging station to vehicle. This advanced technology needs a proper place alignment to park the vehicle in car park infrastructure. In this study, the most sustainable site selection method for this specific type of charging is investigated in an optimal way. This advanced controller will give a precise place alignment for car parking. The controller will be activated depending on the availability of parking slot. Improvement: For this kind of system, when a large parking area will be considered at that time some intelligent controllers should be designed for constant supply and distribution of power from grid to vehicle in a continuous manner.

Keywords

Car Park Infrastructure, Fuzzy Logic Controller, Inductive Charging, LabVIEW, Vehicle.

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G. Jegan ¹, A. Vimala Juliet ², M. Florence Silvia ³, G. B. V. Sai Krishna ⁴

Affiliations
1 Department of ECE, Sathyabama University, Chennai 600119, Tamil Nadu, IN
2 Department of EIE, SRM University, Chennai 603203, Tamil Nadu, IN
3 Department of ECE, SRR Engineering College, Chennai 603103, Tamil Nadu, IN
4 Department of ECE, Sathyabama University,Chennai 600119, Tamil Nadu, IN

Abstract

Objectives: This paper deals with a new design approach for achieving reconfigurable function in Microstrip Patch Antennas. Methods/Analysis: Initially, the antennas are designed on three independent substrates for three individual resonant frequencies such as 2.45GHz (Wi-Fi, Bluetooth, and RF-ID), 5.5GHz (Wi-Fi, WLAN, and Wi-Max) and 7.5GHz (Indoor UWB wireless applications, Satellite and Marine Radar) using line feed technique for various wireless communications. And then, a new frequency reconfigurable rectangular Microstrip Patch Antenna is designed with three patches which are installed on a single substrate using the same feeding technique, where RF power is fed directly to the center patch. The integration of patches on the substrate is made possible with RF switches. Findings: The performance parameters such as return loss, bandwidth and radiation pattern of the reconfigured antenna were measured based on the RF switch on/off conditions. Applications/Improvements: Based on the return loss and bandwidth, the performances of both the reconfigurable and non-reconfigurable antenna designs are compared, tabulated and presented using ANSOFT HFSS 13.0.

Keywords

HFSS, Microstrip Patch Antenna, Radiation Pattern, Return Loss, Wireless Applications.

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