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Development of Hydrogen Fuel Cell Bus Technology for Urban Transport in India

Tata Motors Ltd.-Yogesha S A, Smitan Brahmbhatt, Munusamy Raja, Suresh Arikapudi, Bhaveshkumar Bhut, Jaikumar V
Published 2019-01-09 by SAE International in United States
Polymer Electrolyte Membrane Fuel Cell (PEMFC) technology is considered for automotive applications due to rapid start up, energy efficiency, high power density and less maintenance. In line with National Hydrogen Energy Roadmap of Govt. of India that aims to develop and demonstrate hydrogen powered IC engine and fuel cell based vehicle. TATA Motors Ltd. has designed, developed and successfully demonstrated “Low Floor Hydrogen Fuel Cell Bus” which comprises of integrated fuel cell power system, hydrogen storage and dispensing system.The fuel cell power system, converts the stored chemical energy in the hydrogen to DC electrical energy. The power generated is regulated and used for powering the traction motor. The development of fuel cell bus consists of five stages: Powertrain sizing as per vehicle performance targets, fuel cell stack selection and balance of plant design and development, bus integration, hydrogen refueling infrastructure creation and testing of fuel cell bus. Fuel cell stack integrated with balance of components, which includes air subsystem, hydrogen subsystem, and thermal management system and water recovery unit. Integrated fuel cell power system tested…
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Development of a Polymer Electrolyte Membrane Fuel Cell Stack for a Range Extender for Electric Vehicles

Indian Institute of Technology-Prakash Ghosh
Tata Motors, Ltd.-Yogesha S A, Munusamy Raja, Suresh Arikapudi
Published 2019-01-09 by SAE International in United States
Severe air pollution in cities caused largely by vehicular emissions, which requires urgent remedial measures. As automobiles are indispensable modes of personal and public mobility, pre-emptive efforts are necessary to reduce the adverse effects arising from their operation. A significant improvement in air quality can be achieved through large-scale introduction of vehicles with extremely low emission such as hybrid-electric and zero emission vehicles. Range extension of electric vehicles (EVs) is also of utmost importance to alleviate the handicap of restricted mileage of purely plug-in EVs as compared to conventional vehicles.This paper presents development of a polymer electrolyte membrane (PEM) fuel cell stack used for the range extender electric vehicles. The Fuel cell stack for range extender vehicle operated in a dead end mode using hydrogen and air as open cathode. Stack is to design to meet various performance requirements such as frequent start-stop, ramp-up rate, drive cycle conditions, vehicle dynamics and a longer operation life. Air-cooled stack development employs cell flow channels design analysis(anode and cathode), membrane selection, gasket design and leak analysis, bipolar plate…
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Refurbished and Repower: Second Life of Batteries from Electric Vehicles for Stationary Application

Sardar Vallabhbhai National Institute of Technology-Deshant Sharma
Tata Motors, Ltd.-Bishnu Sanghai, Kapil Baidya, Munusamy Raja
Published 2019-01-09 by SAE International in United States
Rising environmental concerns and depleting natural resources have resulted in faster adoption of green technologies. These technologies are pushed by the government of states through certain schemes and policies as to make the orbit shift ensuring greener environment in near future. Major actions can be easily seen in transportation sector. Hybrid Electric Vehicle (EV), EV and Fuel cell EV are being deployed on roads rapidly but even though some challenges are still unsolved such as battery cost, fast charging and life cycle of the automotive battery. Automotive batteries (Lithium ions) are declared as unfit for automotive usage after the loss of 20% to 15% of their initial capacity. Still 80% to 85% of battery capacity can be utilized in stationary applications other than automotive. Stationary application doesn’t demand high current density or energy density from the battery pack as of automotive requirements. This paper discuss about the methods that needs to be followed while refurbishing of used battery pack for second life which can be used in various application. An economic analysis of second life…
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