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首页> 外文学位 >Online Loss Minimization Based Direct Torque and Flux Control of IPMSM Drive.
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Online Loss Minimization Based Direct Torque and Flux Control of IPMSM Drive.

机译：基于在线损耗最小化的IPMSM驱动器直接转矩和磁通控制。

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摘要

With the advent of high energy rare earth magnetic material such as, third generation neodymium-iron-boron (NdFeB), permanent magnet synchronous motor (PMSM) is becoming more and more popular in high power industrial applications (e.g., high-speed railway) due to its advantageous features such as high energy density, stable parameters, high power factor, low noise and high efficiency as compared to the conventional ac motors. Over the years, vector control and direct torque and flux control (DTFC) techniques have been used for high performance motor drives. But, the DTFC is faster than that of conventional vector control as the DTFC scheme doesn't need any coordinate transformation, pulse width modulation (PWM) and current regulators. The DTFC utilizes hysteresis band comparators for both flux and torque controls. Most of the past researches on DTFC based motor drives mainly concentrated on the development of the inverter control algorithm with less torque ripple as it is the major drawback of DTFC. The torque reference value is obtained online based on motor speed error between actual and reference values through a speed controller. Traditionally, researchers chose a constant value of air-gap flux reference based on trial and error method which may not be acceptable for high performance drives as the air-gap flux changes with operating conditions and system disturbance. Efficient high performance drives require fast and accurate speed response to cope with disturbances and algorithm to minimize motor losses. However, if the reference air-gap flux is maintained constant it is not possible to control the motor losses.;Therefore, this thesis presents a novel loss minimization based DTFC scheme for interior type PMSM drive so that the drive system can maintain both high efficiency and high dynamic performance. An online model based loss minimization algorithm (LMA) is developed to estimate the air-gap flux so that the motor operates at minimum loss condition while taking the general advantages of DTFC over conventional vector control. The performance the proposed LMA based DTFC for PMSM drive is tested in both simulation and real-time implementation at different operating conditions. The results verify the effectiveness of the proposed flux observer based DTFC scheme for PMSM drive.
机译：随着诸如第三代钕铁硼（NdFeB）之类的高能稀土磁性材料的出现，永磁同步电动机（PMSM）在高功率工业应用（例如，高速铁路）中越来越受欢迎。与传统的交流电动机相比，它具有诸如高能量密度，稳定的参数，高功率因数，低噪声和高效率的优点。多年来，矢量控制以及直接转矩和磁通控制（DTFC）技术已用于高性能电机驱动器。但是，由于DTFC方案不需要任何坐标变换，脉宽调制（PWM）和电流调节器，因此DTFC比传统的矢量控制要快。 DTFC将磁滞带比较器用于磁通和转矩控制。过去基于DTFC的电动机驱动器的大多数研究主要集中在转矩脉动较小的逆变器控制算法的开发上，这是DTFC的主要缺点。转矩参考值是通过转速控制器基于实际值和参考值之间的电动机速度误差在线获得的。传统上，研究人员基于反复试验方法选择恒定值的气隙通量参考值，这对于高性能驱动器可能是不可接受的，因为气隙通量会随着工作条件和系统干扰而变化。高效的高性能驱动器需要快速而准确的速度响应以应对干扰和算法，以最大程度地减少电机损耗。但是，如果保持参考气隙通量不变，就不可能控制电动机的损耗。因此，本文提出了一种基于损耗最小化的新型DTFC方案，用于内部PMSM驱动，从而使驱动系统既可以保持较高的效率，又可以保持较高的效率。和高动态性能。开发了一种基于在线模型的损耗最小化算法（LMA）以估算气隙通量，从而使电动机在最小损耗条件下运行，同时利用DTFC优于常规矢量控制的一般优势。在不同的工作条件下，通过仿真和实时实施，对建议的基于LMA的PMSM驱动器的DTFC的性能进行了测试。结果验证了所提出的基于磁通观测器的DTSM方案对PMSM驱动的有效性。

著录项

  • 作者

    Zou, HongBin.;

  • 作者单位

    Lakehead University (Canada).;

  • 授予单位 Lakehead University (Canada).;
  • 学科 Engineering Computer.;Engineering Electronics and Electrical.
  • 学位 M.S.
  • 年度 2014
  • 页码 100 p.
  • 总页数 100
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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