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- Title
Study on Steady-State Temperature Rise Characteristics of Motor Heat Balance under Load Rate.
- Authors
Zhou, Feng; Wang, Pengfei; Bai, Xingzhen; Cui, Baochun; Lyu, Qiang
- Abstract
The influence of load rate and other factors is not considered in the temperature rise monitoring process of traditional motor, which will lead to the wrong diagnosis of motor health status. In this paper, the characteristics of motor temperature rise under different ambient temperatures and different load factors are studied. Taking an 11 kW three-phase asynchronous motor as an example, the temperature rise model of the motor is based on the finite element method established using ANSYS software. The thermal conductivity coefficient and surface heat dissipation coefficient of each part of the motor are determined. According to the electromagnetic field calculation, the motor loss distribution is obtained, and the temperature rise distribution curve of the motor is obtained by the simulation of the three-dimensional steady temperature field of the motor. In this paper, the temperature rise variation law of the motor considering the influence of environmental temperature and load factors is proposed, and combined with the temperature rise threshold curve of the motor under different load rates, a dynamic threshold judgment system is established to accurately warn the motor of overheating under any load rate. When the motor's health status changes after running for a long time, it provides an important theoretical basis for accurate diagnosis of the motor's health status.
- Subjects
DEBYE temperatures; TEMPERATURE distribution; FINITE element method; ELECTROMAGNETIC fields; SURFACE conductivity
- Publication
International Transactions on Electrical Energy Systems, 2022, p1
- ISSN
2050-7038
- Publication type
Article
- DOI
10.1155/2022/1147096