Abstract
This article presents the results of the simulation study of the bi-directional DC converter, including the time diagrams of the electric vehicle speed, voltage and current changes in various experiments, Also presented are the results of efficiency change and charge level, when using a bi-directional converter as well as without using it. The HFEDC (Highway Fuel Economy Driving Schedule) model was chosen for the simulation of the electric vehicle drive model using units simulating standardized driving cycles and as an algorithm for changing the vehicle’s control signal. Studies of the operating modes of the electrical equipment and the electric vehicle with the DC voltage conversion device in the power circuit of the DC source have been carried out by computer simulation in specialized programs for the study of dynamic systems. The simulation model of the reversible DC converter in the electrical power equipment of an electric vehicle was constructed on the basis of mathematical models of the individual elements reflecting their real physical properties. The present solution is the use of two-way DC voltage converters in the power conversion systems of modern electric drives, including the electric propulsion systems of prospective vehicles improves the efficiency of these systems.
Highlights
The transport industry, which is one of the main consumers of energy today, due to increased production of vehicles, is faced with problems associated with environmental pollution, due to increasing emissions of greenhouse gases
Despite the great achievements in the field of electric vehicle manufacturing today, one of the main reasons that impedes the mass production of electric vehicles is the low energy consumption, high weight and high cost of existing traction batteries (TB) used as an energy source
The results of the research In order to confirm the theory of improved traction and improved overall dimensions, as well as the possibility of using a lighter battery, three different experiments were carried out: 1.The electric drive is powered by a battery with a nominal voltage of 400 V DC. 2.The electric drive is powered by a battery with a rated voltage of 650 V DC. The purpose of this experiment is to show the advantage of using a high voltage electric drive. 3.The electric drive is powered by a battery with a nominal voltage of 400 V DC, and a bidirectional constant-voltage converter is used in the high-voltage power circuit, the task of which is to increase the voltage of the battery source from 400 V to 650 V
Summary
Series: Materials Science and Engineering 966 (2020) 012111 doi:10.1088/1757-899X/966/1/012111. Research of a bi-directional DC-DC converter integrated in electric car power installation. K H Gulyamov, B N Sharifov, A H Ghulomzoda, M Kh Safaraliev and R M Yunusov
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