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Estimation of pump operational state with model-based methods

机译：基于模型的方法估算泵的运行状态

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摘要

Pumps are widely used in industry, and they account for 20% of the industrial electricity consumption. Since the speed variation is often the most energy-efficient method to control the head and flow rate of a centrifugal pump, frequency converters are used with induction motor-driven pumps. Although a frequency converter can estimate the operational state of an induction motor without external measurements, the state of a centrifugal pump or other load machine is not typically considered. The pump is, however, usually controlled on the basis of the required flow rate or output pressure. As the pump operational state can be estimated with a general model having adjustable parameters, external flow rate or pressure measurements are not necessary to determine the pump flow rate or output pressure. Hence, external measurements could be replaced with an adjustable model for the pump that uses estimates of the motor operational state. Besides control purposes, modelling the pump operation can provide useful information for energy auditing and optimization purposes.rnIn this paper, two model-based methods for pump operation estimation are presented. Factors affecting the accuracy of the estimation methods are analyzed. The applicability of the methods is verified by laboratory measurements and tests in two pilot installations. Test results indicate that the estimation methods can be applied to the analysis and control of pump operation. The accuracy of the methods is sufficient for auditing purposes, and the methods can inform the user if the pump is driven inefficiently.
机译：泵广泛用于工业中，占工业用电量的20％。由于速度变化通常是控制离心泵扬程和流量的最节能方法，因此变频器与感应电动机驱动的泵一起使用。尽管变频器无需外部测量即可估算感应电动机的运行状态，但通常不考虑离心泵或其他负载机械的状态。但是，通常根据所需的流量或输出压力来控制泵。由于可以使用具有可调参数的通用模型来估计泵的运行状态，因此无需外部流量或压力测量来确定泵的流量或输出压力。因此，外部测量可以由使用电动机运行状态估计值的泵的可调模型代替。除了控制目的之外，对泵的运行进行建模还可以为能源审计和优化目的提供有用的信息。本文提出了两种基于模型的泵运行估计方法。分析了影响估计方法准确性的因素。该方法的适用性通过两个中试装置的实验室测量和测试得到验证。测试结果表明，该估计方法可用于分析和控制泵的运行。这些方法的准确性足以进行审核，并且这些方法可以通知用户泵是否被低效驱动。

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  • 来源
    《Energy Conversion & Management》 |2010年第6期|p.1319-1325|共7页
  • 作者

    Tero Ahonen; Jussi Tamminen; Jero Ahola; Juha Viholainen; Niina Aranto; Juha Kestilae;

  • 作者单位

    Institute of Energy Technology, Lappeenranta University of Technology, P.O. Box 20, FI-53SS1 Lappeenranta, Finland;

    Institute of Energy Technology, Lappeenranta University of Technology, P.O. Box 20, FI-53SS1 Lappeenranta, Finland;

    Institute of Energy Technology, Lappeenranta University of Technology, P.O. Box 20, FI-53SS1 Lappeenranta, Finland;

    Institute of Energy Technology, Lappeenranta University of Technology, P.O. Box 20, FI-53SS1 Lappeenranta, Finland;

    Institute of Energy Technology, Lappeenranta University of Technology, P.O. Box 20, FI-53SS1 Lappeenranta, Finland;

    ABB Drives, P.O. Box 184, FI-00381 Helsinki, Finland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    pumps; state estimation; variable-speed drives; fluid flow control; energy efficiency;

    机译：泵;状态估计变速驱动器;流体流量控制;能源效率;

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