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Energy-efficient operation of pump drives in a cement plant

机译：水泥厂中泵驱动的节能运行

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摘要

Electric motors consume a large share of electricity in cement industries. Traditionally, most of the motor applications use variable frequency drive to save electricity, but they do not optimally minimize power consumption always. Pumps and fans are the applications where significant energy savings can be obtained at partial load by implementing optimal flux control. The present work identifies 10 large-size pump motors of an integrated cement manufacturing unit and proposes optimal flux control in a novel way during their operation. The proposed method eliminates run-time optimal flux computations, perturbations, and convergence issues as compared to conventional techniques along with excellent dynamic response. Significant savings of $0.237 million in annual energy cost, 3261.6 tons of combusted coal, and reduction of 3359.5 tons green-house gas emissions in a year are estimated at an average 90% loading condition. The estimated energy saving will be in line with "good practice" benchmarks for industries.
机译：电动机在水泥行业消耗大量电力。传统上，大多数电动机应用程序都使用变频驱动器来节省电力，但是它们并不能始终以最佳的方式使功耗最小化。泵和风扇是通过实现最佳磁通量控制在部分负载下可显着节省能源的应用。本工作确定了一个集成水泥制造单元的10台大型泵电机，并提出了在其运行过程中以新颖的方式实现最佳流量控制的建议。与传统技术相比，该方法消除了运行时最佳磁通量计算，扰动和收敛问题，并具有出色的动态响应。在平均90％的负载条件下，估计每年可节省大量能源成本23.7万美元，燃烧燃煤3261.6吨，减少温室气体排放3359.5吨。估计的节能量将符合行业的“良好实践”基准。

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