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Design and implementation of a digital automatic high frequency battery charger for HEV application

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4 Author(s)
Chandrasekar, V. ; Power Electron. Group, Centre for Dev. of Adv. Comput., Thiruvananthapuram, India ; Joseph, S.C. ; Chacko, R.V. ; Lakaparampil, Z.V.

The Hybrid Electric Vehicles (HEV) are in the market today, overcoming the limitations of Electric Vehicles (EV) in range as well meeting the stringent emission regulations. Most of the commercial HEVs are designed to have a minimum of six hour halt period to take care of daily maintenance and steady battery charging. A requirement of a compact, cheaper and efficient battery charger has become vital in the development of HEVs. Here an attempt has been made to develop an offline charger and meet the above requirements for a three wheeler series HEV implementation. This is an off board portable charger suitable for lead acid batteries that are extensively used in the HEV implementations in India. The charger is of 350W rating which has taken care of constant current (CC), taper current (TC), constant voltage (CV) & equalizing charging requirements suitable for lead acid batteries through a digital controller and high frequency isolated power hardware. This offline charger is a 25kHz MOSFET based soft switching full bridge converter with gating from DSP & CPLD based digital controller charging a 60V, 60AH battery, has been implemented as per the specifications of Automotive India Standards (AIS) followed by Automotive Research Association of India (ARAI).

Published in:

Electric Vehicle Conference (IEVC), 2012 IEEE International

Date of Conference:

4-8 March 2012