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Back-to-back three-level double-fed induction motor control system for mine hoist

机译:提升机背靠背三电平双馈感应电动机控制系统

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The stator-flux-oriented vector control strategy for double-fed induction motor was investigated in this paper. Three phase three-level rectifier was used as AC/DC block. This rectifier worked with low harmonic distortion in the grid side. Besides, it maintained a high power factor while the energy flows in bidirectional way. For the DC/AC converter, three-level inverter was adopted. Using stator-flux oriented vector control, the double-fed induction gained a high dynamic performance when the stator side was controlled operating in a unite power factor condition. In this paper a novel simplified space vector pulse width modulation (SVPWM) method was proposed to simplify the calculation. The neutral-point potential balance can be easily realized with this method. The control strategy was verified by experiments.
机译:研究了双馈感应电动机的定子磁通矢量控制策略。三相三电平整流器用作AC / DC模块。该整流器在电网侧的谐波失真较低。此外,它在能量双向流动时保持了较高的功率因数。对于DC / AC转换器,采用三电平逆变器。使用面向定子磁通的矢量控制,当控制定子侧在统一功率因数条件下运行时,双馈感应获得了很高的动态性能。为了简化计算,本文提出了一种新颖的简化空间矢量脉宽调制(SVPWM)方法。用这种方法可以容易地实现中性点电位平衡。通过实验验证了该控制策略。

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