Study of methods of energy efficiency improvement considering operation modes of traction electric drive with use of the methods of virtual mathematical modelling

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Abstract

BACKGROUND: Currently, the problem of making wheeled vehicles more environmentally-friendly is one of the most relevant, as using electric vehicles with on-board traction batteries becomes the most popular technical solution. However, the batteries capacity remains relatively low, so efficiency of using them depends on selection the most optimal components of traction electric equipment and implementing the most advanced algorithms of traction electric drive control. Therefore, development of the methods helping to achieve maximal energy efficiency at all stages of design, manufacturing and operation is highly important.

AIM: Development of fundamentals and methods of improvement of wheeled vehicles energy efficiency at the design stage with the use of virtual mathematical modelling.

METHODS: The study was conducted with the MATLAB/Simulink software package.

RESULTS: Theoretical basis of the improvement methods with the use of mathematical modelling of virtual operation of the vehicle’s digital twin in the MATLAB/Simulink is given in the paper.

CONCLUSIONS: The practical value of the study lies in ability of using the proposed methods in development of prosperous wheeled vehicles.

About the authors

Aleksander V. Klimov

KAMAZ Innovation Center; Moscow Polytechnic University

Author for correspondence.
Email: klimmanen@mail.ru
ORCID iD: 0000-0002-5351-3622
SPIN-code: 7637-3104

Cand. Sci. (Engineering), Head of the Electric Vehicles Service, Associate Professor of the Advanced Engineering School of Electric Transport

Russian Federation, 62 Bolshoy boulevard, Skolkovo Innovation center, 143026 Moscow; Moscow

References

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Supplementary files

Supplementary Files
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1. JATS XML
2. Fig. 1. Main view of the vehicle (a) and the drivetrain diagram (b).

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3. Fig. 2. The simulation model of vehicle motion in the MATLAB/Simulink: 1 — ground surface; 2 — the vehicle dynamics block; 3 — traction electric motors; 4 — a driving cycle; 5 — inverters; 6 — drivetrain; 7 — climatic conditions; 8 — an electricity storage system; 9 —a wheel; 10 — front suspension; 11 — rear suspension; 12 — a control system; 13 — a rear axle.

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4. Fig. 3.

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5. Fig. 3. Time-domain motion velocity of a wheeled vehicle.

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6. Fig. 4. Probability density distribution of motion velocity.

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7. Fig. 5. Probability density distribution of wheel rotation velocity.

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8. Fig. 6. Probability density distribution of torque at wheels.

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9. Fig. 7. Distribution of operation points of torque at driving wheels.

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10. Fig. 8. Typical electromechanical performance diagram of a traction electric motor and areas of the highest efficiency of various types of electric motors: SPM — permanent-magnet synchronous motors; IPM — internal permanent magnet motors; IM — induction motors; SR — switched reluctance motors.

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11. Fig. 9. The operating points combined with the typical performance diagram of electric motors.

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