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【6h】 A Novel Zero-Sequence Model-Based Sensorless Method for Open-Winding PMSM With Common DC Bus

机译基于零序模型的新型无刷永磁同步电机永磁直流绕组无传感器方法

【摘要】This paper proposes a zero-sequence model-based sensorless control strategy for open-winding permanent-magnet synchronous machine (OW-PMSM) with common dc bus. The third harmonic back electromotive force (EMF) in zero-sequence is utilized to estimate the rotor position information. The novelty is that the third harmonic back EMF is reconstructed based on the zero-sequence model together with zero-sequence current, instead of using voltage transducer and three phase resistance network which can be eliminated from the control system. Due to the essence of back EMF, the developed method is appropriate for the applications including wind power generation and motor drives operating above certain speed. Meanwhile, the phase shift-based space vector pulse width modulation method for OW-PMSM is also presented for easier implementation to form zero voltage disturbance in zero-sequence from the inverter side and hence the corresponding influence can be consequently minimized. The torque ripple, loss, and parameter sensitivity analysis are also carried out, as confirmed by predictions of two-dimensional finite element analysis. Due to the essence of decouple, the estimation can be more robust than the conventional fundamental model-based sensorless methods. Finally, the effectiveness of the proposed method is validated experimentally on a 3-kW OW-PMSM drive system with 2.5 kg·m2 total inertia.

【摘要机译】本文提出了一种基于零序模型的具有公共直流母线的开放式永磁同步电机(OW-PMSM)的无传感器控制策略。零序的三次谐波反电动势(EMF)用于估算转子位置信息。新颖之处在于,基于零序模型和零序电流重建了三次谐波反电动势,而不是使用电压互感器和可从控制系统中消除的三相电阻网络。由于反电动势的本质,所开发的方法适用于包括风力发电和以一定速度运行的电动机驱动器的应用。同时,还提出了用于OW-PMSM的基于相移的空间矢量脉冲宽度调制方法,以更容易实现,以从逆变器侧以零序形成零电压干扰,因此相应的影响可以最小化。正如二维有限元分析的预测所证实的那样,还进行了转矩脉动,损耗和参数灵敏度分析。由于解耦的本质,与传统的基于基本模型的无传感器方法相比,该估计可以更可靠。最后,在总惯量为2.5 kg·m2的3kW OW-PMSM驱动系统上,通过实验验证了该方法的有效性。

【原文格式】PDF

机译 谐波分析空间矢量脉宽调制数学模型逆变器转子电感电阻;
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