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Analysis and control of a dual stator winding squirrel cage induction machine drive.

机译：双定子绕组鼠笼感应电机驱动器的分析和控制。

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摘要

A novel dual stator induction motor drive, DSIM, is presented in this thesis. The new drive is based on an induction motor consisting of a standard squirrel cage rotor and two separate stator windings wound for a dissimilar number of poles. The two stators are fed from two three-phase inverters that share a common DC-link. This structure offers the advantage of producing two independent torque components that are only coupled through the mechanical shaft. The speed is controlled by adding or subtracting the two torque components. This feature is utilized to partially decouple the mechanical speed from the electrical frequencies fed to the stator winding sets. In principle it is possible to maintain the electrical frequency above a pre-set minimum value while the drive operates at zero speed and any load, hence simplifying the practical implementation of sensorless control schemes during low and zero speed operation.;Using this idea two torque control strategies for operation under constant V/Hz and field orientation are presented and evaluated through simulation and experimental work.;A detailed mathematical model, as well as an equivalent circuit, of the dual stator machine proposed are derived. These are used to evaluate the performance of the proposed DSIM and compare it to that of a standard induction motor of the same frame size and with identical squirrel cage rotor. From this comparison it is concluded that the DSIM offers such advantages as a larger break down torque at low speed and almost the same constant power region. However, the steady state torque for the same total inverter kVA rating results are slightly smaller.;A 4/12-pole prototype based on an existing 12-pole induction motor design was built and tested. From the experimental results the sensorless operation at zero speed under both constant V/Hz and field orientation was verified. It was also found that the DSIM is capable to produce slightly less steady state torque than the original machine for the same total input current. However, the break down torque is larger in the DSIM.
机译：本文提出了一种新型的双定子感应电动机驱动器DSIM。新的驱动器基于一个感应电动机，该感应电动机包括一个标准的鼠笼式转子和两个单独的定子绕组，绕制的磁极数量不同。这两个定子由两个共享公共直流母线的三相逆变器供电。这种结构的优点是产生两个独立的扭矩分量，它们仅通过机械轴联接。通过增加或减去两个转矩分量来控制速度。利用此功能可将机械速度与馈入定子绕组组的电气频率部分分离。原则上，在变频器以零速和任何负载运行时，可以将电频率保持在预设的最小值以上，从而简化了低速和零速运行期间无传感器控制方案的实际实施。给出了在恒定V / Hz和磁场定向下的控制策略，并通过仿真和实验工作进行了评估。;推导了提出的双定子电机的详细数学模型以及等效电路。这些用于评估建议的DSIM的性能，并将其与相同框架尺寸和相同鼠笼转子的标准感应电动机进行比较。从该比较可以得出结论，DSIM具有以下优势：在低速和几乎相同的恒定功率范围内具有更大的击穿扭矩。但是，在相同的总逆变器kVA额定结果下，稳态转矩略小。基于现有的12极感应电动机设计，构建并测试了4/12极原型。从实验结果验证了在恒定V / Hz和磁场定向下零速度下的无传感器操作。还发现，在相同的总输入电流下，DSIM能够产生比原始机器稍小的稳态扭矩。但是，DSIM中的分解扭矩更大。

著录项

  • 作者

    Munoz-Garcia, Alfredo R.;

  • 作者单位

    The University of Wisconsin - Madison.;

  • 授予单位 The University of Wisconsin - Madison.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 1999
  • 页码 264 p.
  • 总页数 264
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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