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Scalar Control Systems for a Traction Induction Motor

机译：牵引感应电动机的标量控制系统

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摘要

A brief review and comparative characteristics of scalar control systems for traction induction motors for using in the traction electric drive are presented. It is shown that, despite the obvious advantages of the systems of vector control and direct torque control, scalar control systems have found wide application. The operation features of scalar control systems with stability0 of absolute slip and a minimum of stator current are considered. Based on the equivalent circuit of an induction motor taking into account the stator and rotor iron loss, a comparative evaluation of the considered scalar control systems based on the criterion of the efficiency coefficient taking into account the temperature of the stator and rotor windings is presented. Simulation results in the MATLAB environment for an 11-kW induction motor are presented. It is established that scalar control systems operating under the principle of a stator current minimum have an advantage, as this maintains the desired torque value with higher values of efficiency coefficient, which decreases electromagnetic loads and power loss. It is shown that it is necessary to take into account the influence of windings temperature on the stator voltage and the parameters of the control system in connection with its affect on the minimum stator current and optimal absolute slip ensuring extremal control by current minimum.
机译：介绍了用于牵引电驱动的牵引感应电动机的标量控制系统的简要回顾和比较特性。结果表明，尽管矢量控制和直接转矩控制系统具有明显的优势，但标量控制系统已得到广泛应用。考虑具有绝对滑差稳定性和最小定子电流的标量控制系统的工作特性。基于考虑定子和转子铁损的感应电动机的等效电路，基于考虑定子和转子绕组温度的效率系数标准，对所考虑的标量控制系统进行了比较评估。给出了在MATLAB环境中针对11 kW感应电动机的仿真结果。可以确定的是，在最小定子电流的原理下运行的标量控制系统具有优势，因为它以较高的效率系数值保持了所需的转矩值，从而降低了电磁负载和功率损耗。结果表明，有必要考虑绕组温度对定子电压的影响以及控制系统的参数及其对最小定子电流和最佳绝对滑差的影响，以确保通过最小电流进行极端控制。

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