Experimental nonlinear torque control of a permanent-magnet synchronous motor using saliency
Experimental nonlinear torque control of a permanent-magnet synchronous motor using saliency
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DOI：
10.1109/41.633471
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发表时间：
1997-10-01
影响因子：
7.7
通讯作者：
LePioufle, B
中科院分区：
文献类型：
--
作者：
Grenier, D;Dessaint, LA;LePioufle, B
本文提出了一种新的永磁凸极同步电动机非线性控制策略，该控制策略在不需要电流内环和前馈补偿的情况下，同时实现了精确的转矩控制和铜损最小化。它通过允许电流（i（d））具有非零值来利用转子凸极。这反过来又允许我们增加机器的功率因数并提高最大容许扭矩。我们应用输入输出线性化技术，输入是定子电压和输出是转矩和一个明智地选择新的输出。这个新的输出确保了一个明确定义的相对程度，并以这样一种方式与铜损相关联，即当强制为零时，它会导致最大的机器效率。我们的非线性控制器的性能证明了通过使用数字信号处理器（DSP）芯片上的永磁凸极同步电机的正弦磁通分布的实时实现。将结果与用迫使i（d）电流为零的方案获得的结果进行比较。
In this paper, a new nonlinear control strategy is proposed for a permanent-magnet salient-pole synchronous motor, This control strategy simultaneously achieves accurate torque control and copper losses minimization without recurring to an internal current loop nor to any feedforward compensation. It takes advantage of the rotor saliency by allowing the current (i(d)) to have nonzero values. This, in turn, allows us to increase the power factor of the machine and to raise the maximum admissible torque. We apply input-output linearization techniques where the inputs are the stator voltages and the outputs are the torque and a judiciously chosen new output. This new output insures a well-defined relative degree and is linked to the copper losses in such a way that, when forced to zero, it leads to maximum machine efficiency. The performance of our nonlinear controller is demonstrated by a real-time implementation using a digital signal processor (DSP) chip on a permanent-magnet salient-pole synchronous motor with sinusoidal flux distribution. The results are compared to the ones obtained with a scheme which forces the i(d) current to zero.