Optimal Control of the Switched Reluctance Motor of High-Speed Rail Transport with an On-Board Energy Source

The article is devoted to the development of an algorithm for optimal control of a switched reluctance drive (SRD) for high-speed ground transport (HSGT). The further development of HSGT is associated with solving a number of tasks, including ensuring independence from an external energy source, since the transmission of energy using a sliding contact of hundreds of kilowatts to a vehicle moving at a speed of more than 350 km/h does not have a satisfactory solution. The placement of a traction battery on high-speed transport will eliminate sliding contact and all costs associated with the electric traction power supply network. The article considers the power supply circuit of the HSGT traction electric drive. A switched reluctance machine (SRM) is proposed as an electromechanical converter. To ensure the energy efficiency of the traction electric drive and create favorable conditions for the placement of the traction battery on the HSGT, an optimal SRD control algorithm was developed. The square of the input supply voltage was chosen as the optimization criterion. This made it possible to significantly reduce the electrical losses in the SRM winding. The optimal control problem was solved using the maximum principle. Based on the calculations performed, a quantitative assessment of electrical losses in the engine was presented and a comparison of the optimal control algorithm with traditional SRD control methods was given. Information is provided on the method of practical implementation of the optimal control algorithm and the practical significance of the proposed technical solutions.