LUMPED PARAMETER THERMAL-MODEL FOR ELECTRICAL MACHINES OF TEFC DESIGN

被引：597

作者：

MELLOR, PH ^{[1
]}

ROBERTS, D ^{[1
]}

TURNER, DR ^{[1
]}

机构：

[1] UNIV LIVERPOOL,DEPT ELECT ENGN & ELECTR,LIVERPOOL L69 3BX,ENGLAND

来源：

IEE PROCEEDINGS-B ELECTRIC POWER APPLICATIONS | 1991年 / 138卷 / 05期

关键词：

TEFC DESIGNS; THERMAL MODELS; ELECTRICAL MACHINES;

D O I：

10.1049/ip-b.1991.0025

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A lumped-parameter thermal model is described which provides both a steady-state and transient solution to the temperatures within an electrical machine of the TEFC design. The model is sufficiently complex to identify the temperatures at most locations in the machine, including the peak temperatures in the endwinding and the surface temperatures of the rotor. It is formulated out of purely dimensional information and constant thermal coefficients and is therefore easily adapted to a range of frame sizes. The thermal behaviour of the TEFC machine is accurately described by the solution of just eight linear differential equations. The model is therefore suitable for application to online temperature estimation for protection and duty-cycle evaluation. The application of the thermal model to a medium (75 kW) and two small (5.5 kW) induction motors is described in detail. The model performance is confirmed by experimental temperature data obtained from varying load tests on each of the three induction motors.

引用

页码：205 / 218

页数：14

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