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Hardware Implementation of Direct Load Angle Controlled Induction Motor Drive

机译:直接负载角控感应电动机驱动器的硬件实现

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摘要

In this article, a direct load angle (DLA) control method for induction motor drive is proposed to reduce the torque and flux ripple. It is based on control of incremental change in load angle. The torque control is achieved without losing the benefits of conventional direct torque control (DTC) by reference stator flux angle, which is the sum of load angle and rotor flux angle. In this proposed DTC scheme, coordinate transformation is not required in torque control unit and reference voltage sector number and angle are not required in PWM unit, which reduces the control complexity. Proposed DTC control method is applied to two level voltage source inverter fed induction motor drive and hardware results are presented. From the hardware results, it is found that the proposed DTC control scheme impressively reduces the torque and flux ripples when compared with conventional space vector modulation (SVM) DTC.
机译:在本文中,提出了一种用于感应电动机驱动的直接负载角(DLA)控制方法,以减少转矩和磁通波动。它基于控制负载角增量变化。通过参考定子磁通角(即负载角和转子磁通角之和),可以在不损失传统直接转矩控制(DTC)优势的情况下实现转矩控制。在该提出的DTC方案中,转矩控制单元中不需要坐标变换,PWM单元中不需要参考电压扇区数和角度,这降低了控制复杂度。提出的DTC控制方法应用于感应电动机驱动的两电平电压源逆变器,并给出了硬件结果。从硬件结果可以发现,与传统的空间矢量调制(SVM)DTC相比,提出的DTC控制方案显着降低了转矩和磁通波动。

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