• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Development of an Asymmetric Two-Phase Variable-Speed Electric Drive for Permanent-Split Capacitor Motors in HVAC Applications.
【24h】

Development of an Asymmetric Two-Phase Variable-Speed Electric Drive for Permanent-Split Capacitor Motors in HVAC Applications.

机译：为HVAC应用中的永久分裂电容器电动机开发非对称两相变速电驱动器。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Permanent-split-capacitor (PSC) motors are very widely used in fixed-speed and multi-speed configurations, notably HVAC applications. Typical operation using a fixed-frequency supply results in poor motor efficiency and in large torque ripple at twice the electrical frequency. The feasibility of a variable-speed drive to provide stable variable-speed operation, improve steady-state and dynamic torque characteristics, and improve efficiency has commercial interest. Application of existing symmetric variable-speed drive designs to asymmetric PSC motors results in either excessive voltage stress applied to the motor's windings or in insufficient voltage applied to the auxiliary winding resulting in relatively low efficiency and large torque ripple at the motor's design point.;This research identifies key PSC motor characteristics and develops a variable-speed drive to improve operation. The developed variable-speed drive simultaneously reduces the dc bus voltage and increases motor efficiency at rated speed. The dV/dt applied across the motor windings is kept low, and an appropriate magneto-motive force is applied to the motor at all operating points. As a result, the motor and drive system efficiency is increased while preserving reliable motor operation.;The dissertation document presents the proposed topology, detailed modeling, comparative evaluation, simulation results, backed up by experimental evaluation that validate the feasibility of the approach.
机译：永久分裂电容器（PSC）电动机非常广泛地用于定速和多速配置中，尤其是HVAC应用。使用固定频率电源的典型操作会导致电机效率低下，并在两倍于电频率的情况下导致大的转矩纹波。变速驱动器提供稳定的变速操作，改善稳态和动态转矩特性以及提高效率的可行性已经引起了商业兴趣。将现有的对称变速驱动器设计应用于不对称的PSC电动机会导致施加在电动机绕组上的电压应力过大，或者施加在辅助绕组上的电压不足，从而导致电动机设计点处的效率相对较低且转矩波动较大。研究确定了PSC电动机的关键特性，并开发了变速驱动器以改善操作。所开发的变速驱动器可同时降低直流母线电压并提高额定速度下的电机效率。施加在电动机绕组上的dV / dt保持较低，并且在所有工作点上均向电动机施加了适当的磁通势。结果，在保持可靠的电动机运行的同时，提高了电动机和驱动系统的效率。论文提出了提出的拓扑结构，详细的建模，比较评估，仿真结果，并辅以实验评估，验证了该方法的可行性。

著录项

  • 作者

    Anderson, Korwin.;

  • 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 2012
  • 页码 161 p.
  • 总页数 161
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号