A Traction Electric Drive of for a Gazelle-Next Electric Vehicle

In the article, the task of expanding the range of work in speed and moment of traction electric drive of an agricultural tractor is considered. We propose to achieve this goal through the use of a two-stage gearbox based on a three-row planetary gear. It is proposed to shift gear ratio by eliminating one row of the gearbox from the process of converting mechanical energy. Evaluation of the effect of the proposed solution was tested on a refined mathematical model, in which the electric drive is presented as a complex “frequency converter with vector control - motor - working body. The obtained simulation results allow us to argue that with the correct operation of the system in long-term operation, energy savings of up to 12% can be achieved (for various types of soil and operating modes: arable land, driving), and for transient processes - 7-8%.

Electric traction drive of an agricultural tractor

Deryabin¹,

Zhuravleva

2020

Comparative analysis of electric drive control systems for technological facilities in the agricultural sector

Platonov

Tulegenov

2020

The article provides a comparative analysis of the most common electric drive control systems: scalar control, vector control and direct torque control DTC. The analysis is carried out according to the criteria for the performance of the torque loop, the robustness of the systems, the level of torque ripple and overshoot in the torque loop. Comparison is made by subjectively assigning points for each of the criteria based on a qualitative assessment. The simplified mathematical models are used for analysis, that taking into account the pulsating moment pulsations. In conclusion, it is concluded that it is advisable to use one or another control system for electrical equipment in various fields of agricultural use.

Electric drive of the generator of the diesel-electric tractor DET-250M2 on the basis of a Field Regulated Reluctance Machine

Kornienko¹,

Fediakov²,

Golykov³

et al. 2020

The diesel electric tractor DET-250M2 was the first tractor in the USSR with an all-electric transmission. This tractor usually works in agriculture as a cultivator and a bulldozer. However, it is often used in the railway sector, in industry, in large construction projects. Since the tractor’s electrical installation developed in the 1950s on the basis of DC collector machines is now obsolete, difficult to maintain, it was decided to upgrade the traction electric drive. The article presents the calculations of an electric machine: optimization of the rotor geometry, selection of the optimal ratio of the pole and interpolar gap, selection of the optimal number of poles of the machine, selection of the current shape, type of rotor. As an electric machine, a FRRM, which characterized by high overload capacity, a wide range of work in terms of torque and speed, was selected.