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 Publication Type Title

2014

Conference Paper

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

Conference Paper

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

Publication Type: Journal Article

Year of Publication Publication Type Title

2014

Journal Article

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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