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首页> 外文期刊>International Journal of Engineering Research and Applications >Nonlinear Control of SPWM Inverter Fed BLDC Motor Using Robust H Controller
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Nonlinear Control of SPWM Inverter Fed BLDC Motor Using Robust H Controller

机译：鲁棒H控制器对SPWM逆变无刷直流电动机的非线性控制。

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摘要

Brushless DC motorsare enhancing an enticing alternative to DC due to their admirable controllability and high efficiency. These motors also have power saving advantages relative to the other types of motors. Various types of control strategies have been illustrated for variable speed AC drives. When those control strategies are applied to the proposed drive, there are certain drawbacks like uncertainty, sensitive to parametric variations etc. The linear control theory is applicable for linear models only. So in this paper nonlinear controller using feedback linearization technique is suggested to transform a nonlinear model into a linear one. Along with this in order to increase the degree of stability and robustness of the system,H∞controller is suggested. The BLDC motor is extensively simulated using MATLAB software for incremental/decremental changes in i) speed corresponding to different frequencies at a constant torque and ii) torque at a constant speed.
机译：无刷直流电动机由于其令人称赞的可控性和高效率，正成为直流电动机的诱人替代品。相对于其他类型的电动机，这些电动机还具有省电优势。已经示出了用于变速交流驱动器的各种控制策略。当将这些控制策略应用于所提出的驱动器时，存在某些缺点，例如不确定性，对参数变化敏感等。线性控制理论仅适用于线性模型。因此，本文建议采用反馈线性化技术的非线性控制器将非线性模型转换为线性模型。为了提高系统的稳定性和鲁棒性，提出了H∞控制器。使用MATLAB软件对BLDC电机进行了广泛的仿真，以使i）恒定转矩下对应于不同频率的速度和ii）恒定速度下转矩的增量/减量变化。

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