This paper investigates the decoupling and fast torque response for induction motor drives during vehicle operation with variable flux. A torque control method considering flux transient information is proposed, which takes the electromagnetic torque and reactive torque as state variables for modeling and feedback linearization control. Since the electromagnetic torque is aligned with the active power, and the reactive torque is aligned with the reactive power and perpendicular to the electromagnetic torque, the stator dq-axis current control of the field-oriented control (FOC) is replaced by the simultaneous control of the electromagnetic torque and reactive torque. The physical concept of the inner loop changes from the current to the torque, and the modulation signals from the voltage-type to the power-type. This strategy improves the decoupling performance under variable flux, and the fast response capability of the torque. In addition, it eliminates the complex rotation coordinate transformation. A comparative experiment was carried out between the proposed method and the FOC. Both methods have good steady-state performance. However, the proposed method has better torque response and decoupling.

本文研究了在可变磁通车辆运行期间感应电机驱动的解耦和快速转矩响应。提出了一种考虑磁通暂态信息的转矩控制方法，将电磁转矩和无功转矩作为状态变量进行建模和反馈线性化控制。由于电磁转矩与有功功率对齐，而无功转矩与无功功率对齐并垂直于电磁转矩，因此定子dq磁场定向控制（FOC）的轴电流控制被电磁转矩和反作用转矩的同时控制所取代。内环的物理概念由电流型变为转矩型，调制信号由电压型变为功率型。该策略提高了变磁通下的解耦性能，以及转矩的快速响应能力。此外，它消除了复杂的旋转坐标变换。在所提出的方法和FOC之间进行了对比实验。两种方法都具有良好的稳态性能。然而，所提出的方法具有更好的扭矩响应和解耦。