Abstract
The article presents a process of designing the photovoltaic (PHV) converters system for an electric vehicle, shows the scheme of photovoltaic converters usage, the results of electric vehicle motion modeling with photovoltaic converters, and the results of road tests of an electric vehicle with an additional power source based on photovoltaic converters. The photovoltaic converters system and low-voltage system of an electric vehicle have a shared low-voltage battery, which allows the implementation of two schemes of electric vehicle power supply. Initially, the aggregate base was selected, then, taking into account the efficiency of each device included in the design of the new electric vehicle, mathematical modeling was carried out and showed good efficiency results of the photovoltaic converters system. Then, the prototype was manufactured and tested. The aggregate base included the battery of photovoltaic converters assembled in a certain way on the vehicle roof, the MPPT (maximum power point tracking) controller, the buffer storage device in the form of a 12 V battery, and the DC (direct current) converter that allows transmitting electricity from the buffer battery to the high-voltage system. Modeling of the electric vehicle motion considered typical operating modes, including energy costs for the operation of assistant systems of the electric vehicle, as well as including the consumption of low-voltage components. The tests were carried out according to the NEDC (New European Driving Cycle). As a result, implementation of photovoltaic converters with 21% efficiency allowed for the power reserve of the electric vehicle to be increased by up to 9%.
Highlights
Nowadays, there are a large number of vehicle projects that use solar energy
After studying factors associated with charging the electric vehicles and taking into account thedevelopment development photoelectric converters, ititisisrelevant to to equip account the development of photoelectric or photovoltaic converters, it is relevant to equip an an electric into account the ofofphotoelectric or photovoltaic photovoltaic converters, relevant equip an electric vehiclewith withphotoelectric photoelectric converters that of are capable charging battery electric vehicle converters that arecharging capableaofof charginga ahigh-voltage high-voltage battery vehicle with photoelectric converters that are capable high-voltage battery (HVB)
The mathematical description of each element used in the electric vehicle system makes it possible to create a mathematical model of the electric vehicle with a system of photovoltaic converters, which was implemented in the Simulink environment and allowed for the motion to be simulated according to a certain cycle in different conditions
Summary
Some of them use energy in order to increase the power reserve, others use energy for cooling and ventilation of the cabin Some of these projects were implemented more than 5 years ago, when the efficiency of PHV (photovoltaic) elements or cells was about 10%. In the field of development of photovoltaic converters, there have been many discoveries that have gradually led to in the efficiency ofconverters, solar cells, firsthave in the laboratory, and in real. Research have gradually increases in the efficiency of solar Headquarters, cells, first in theChicago, laboratory, and in real company developed photovoltaic converters had 41.6%. 2011, was Junction set acompany new mark in PHV efficiency converters in laboratory conditions, as an efficiency.
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