教程:从Steinmetz模型到高惯性驱动器的保护

2007 Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources Pub Date : 2007-03-27 DOI:10.1109/CPRE.2007.359899

Stanley E. Zocholl

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引用次数: 10

摘要

感应电动机的热极限用热极限曲线来表示，热极限曲线是转子和定子的极限温度以I2t为单位的曲线。本文讨论了由热极限曲线和配套电机数据定义的转子和定子热模型所提供的热保护。热模型是由电流引起的温升微分方程的时间离散形式，由附件所示的基本原理推导而来。在转子模型中，电压和电流用于导出与滑移相关的I2r瓦，使高惯性驱动电机能够安全启动。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Tutorial: From the Steinmetz model to the protection of high inertia drives

The thermal limitations of induction motors are specified by thermal limit curves that are plots of the limiting temperature of the rotor and stator in units of I2t. This paper discusses the thermal protection provided by rotor and stator thermal models defined by the thermal limit curves and supporting motor data. The thermal model is the time-discrete form of the differential equation for temperature rise due to current and is derived from fundamental principles as shown in the Annex. In the rotor model, voltage and current are used to derive the slip-dependent I2r watts that permit the safe starting of high-inertia drive motors.

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来源期刊

2007 Power Systems Conference: Advanced Metering, Protection, Control, Communication, and Distributed Resources

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