Qualification: 
M.Tech, B-Tech
ashaca@am.amrita.edu

Asha C. A. currently serves as Assistant Professor at the Department of Electrical and Electronics Engineering at Amrita School of Engineering, Amritapuri. Asha C. A. has completed  B. Tech. in  EEE  from Lourdes Matha College of Science and Technology  in the year 2009 and  M. Tech. in Electrical Machines from College of Engineering, Trivandrum in the year 2012.

Publications

Publication Type: Conference Paper

Year of Publication Title

2017

A. H. Aswathy, Sukumar, G. M., Swapnil, M. S., V. A. Kumar, A. Krishna, C.A. Asha, and Dr. V. Ravikumar Pandi, “Solar powered intelligent electric wheel chair with health monitoring system”, in 2017 International Conference on Technological Advancements in Power and Energy ( TAP Energy), Kollam, India, 2017.[Abstract]


Physically disabled persons face many difficulties associated with their mobility problem. The solar powered electric wheel chair with health monitoring system is proposed in this work to ensure more comfortable in travel and life for the physically challenged people. The electric wheel chair is integrated with pulse sensor which measures the heart beat of the person and the load cell attached to it ensures the presence of the person sitting on the wheel chair. The ultrasonic sensor implemented in the wheel chair informs the obstacle around the person and the LDR attached to it provides emergency lighting when it senses the darkness. These features make the solar electric wheel chair an intelligent one and are very useful for the physically disabled people who want to be independent. The patients staying in the urban and rural areas can be remotely monitored with the help of health monitoring system incorporated in to this electric wheel chair and thus saving costs.

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2014

P. K. Vineeth Kumar and C.A. Asha, “An efficient solar power converter with high MPP tracking accuracy for rural electrification”, in 2014 International Conference on Computation of Power, Energy, Information and Communication, ICCPEIC 2014, 2014.[Abstract]


This paper introduces a high step up voltage gain DC-DC converter for dc microgrid applications. The dc microgrid can be utilized for rural electrification. The whole system includes a Photovoltaic panel (PV), High step up DC-DC converter with Maximum Power Point Tracking (MPPT) and a dc microgrid. The MPP can be tracked by Incremental Conductance (IC) MPPT technique modified with D-Sweep (Duty ratio Sweep). D-sweep technique reduces the problem of multiple local maxima. In this paper a high step up DC-DC converter which comprises of both coupled inductor and switched capacitors is used. This increases the gain up to twenty times with high efficiency. The Simulink model of the system has input voltage range of 30V to 40V and maximum PV output power of 250Watts/400V. The maximum power conversion efficiency of the system is 95.85%. © 2014 IEEE.

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2012

C.A. Asha, “An Induction Motor Speed Control for Batteryless photovoltaic pumping ”, 2012.

Publication Type: Journal Article

Year of Publication Title

2014

P. K. Vineeth Kumar, C.A. Asha, and Sreenivasan, M. K., “An Efficient Design, Simulation and Hardware Implementation of Solar power converter with High MPP tracking Accuracy for DC microgrid Applications”, IJRET: International Journal of Research in Engineering and Technology, vol. 3, no. 7, 2014.[Abstract]


This work includes a high step up voltage gain DC-DC converter for DC microgrid applications. The DC microgrid can be utilized for rural electrification, UPS support, Electronic lighting systems and Electrical vehicles. The whole system consists of a Photovoltaic panel (PV), High step up DC-DC converter with Maximum Power Point Tracking (MPPT) and DC microgrid. The entire system is optimized with both MPPT and converter separately. The MPP can be tracked by Incremental Conductance (IC) MPPT technique modified with D-Sweep (Duty ratio Sweep). D-sweep technique reduces the problem of multiple local maxima. Converter optimization includes a high step up DC-DC converter which comprises of both coupled inductor and switched capacitors. This increases the gain up to twenty times with high efficiency. Both converter optimization and MPPT optimization increases overall system efficiency. MATLAB/simulink model is implemented. Hardware of the system can be implemented by either voltage mode control or current mode control.

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