Abstract
Electric car does not supply all the electric energy, obtained from the electric network, to the wheels in the form of mechanical energy. During such a transformation, a part of this energy is lost. The article endeavours to determine the energy efficiency of selected electric car. The electric car used for measurements is not from the batch production since that is a vehicle designed at University of Zilina. The efficiency has been observed while driving under the conditions of amended methodology of New European Driving Cycle (NEDC). The measured value of electric car's efficiency is being analyzed from the energy consumption, as well as emission production, points of view.
Highlights
Energy input to an electric car in the form of electric energy obtained from the electric network is regulated before being supplied to the wheels in the form mechanical energy; there is a change in the value of electric current and voltage and it is further stored in the accumulator and transformed into mechanical energy in the electric motor
Efficiency of the transmission energy from the electric socket on the dynamometer’s cylinders has been 45% within the electric car used for the measurement
Under these conditions, only 5 kWh from every 10 kWh of energy taken from the electric socket is being delivered to wheels in the form of electric energy
Summary
Energy input to an electric car in the form of electric energy obtained from the electric network is regulated before being supplied to the wheels in the form mechanical energy; there is a change in the value of electric current and voltage and it is further stored in the accumulator and transformed into mechanical energy in the electric motor. These processes are connected to energy losses [1]. Every single kWh of electric energy consumed is connected with a certain amount of emissions produced, certain amount of nonrenewable energy resources consumed as well as certain amount of money spent on electric energy purchase [8,9]
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