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Research on Electromagnetic Thermal of Permanent Magnet Synchronous Motor with Short-term High Overload
2023-07-28
With the development of all-electric technology, electric steering gear is widely used in aerospace, military applications and other fields. The rudder system motor requires high power density, high dynamic response and high reliability. Permanent magnet synchronous motor (PMSM) is widely used in servo system because of its simple structure, high torque density, high power density and high efficiency. High power density motor generally refers to high speed high power density motor and high torque high power density motor. For the steering gear system, it is mainly a high torque density motor, which can meet the high dynamic response performance in the process of frequent acceleration. There are many researches on high torque density motors at home and abroad, with various structures, such as high temperature superconducting motors, slotless cylindrical linear motors, transverse flux motors, switched reluctance motors, etc. Although the power density of this kind of motor is very high, its technical development is still not mature enough, and the reliability can not be guaranteed. In this paper, the rotating surface-mounted permanent magnet synchronous motor is mainly used. Short-term high overload motor means that the motor can output instantaneous large overload in a short-term state when the motor speed is constant, and complete the predetermined action of the actuator. In recent years, the study of short-term high overload motor is increasing, domestic Harbin Institute of Technology, Tianjin University, etc. have done a lot of work, foreign research on the thermal aspects of short-term cycle working motor is more. On the whole, scholars at home and abroad mainly focus on the analysis of high power density and temperature field for short-term high overload motors, and lack of analysis and research on how to improve the limit torque output capacity of the motor and the influence of the external environment on short-term high overload motors. Based on the actual engineering background, this paper analyzes the influence of electromagnetic load on motor overload capacity. By analyzing the influence law of ampere-turns on the limit torque of permanent magnet synchronous motor, the number of turns in series of each phase winding of the motor is optimized, the influence of overload multiple on the loss distribution law of the motor is analyzed, and the temperature rise change law of the motor under long-term working system, short-term cycle working system and short-term high overload conditions under different environmental temperatures is analyzed by finite element method. The correctness of theoretical analysis is verified by experiments.
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2023-07-28
With the development of all-electric technology, electric steering gear is widely used in aerospace, military applications and other fields. The rudder system motor requires high power density, high dynamic response and high reliability. Permanent magnet synchronous motor (PMSM) is widely used in servo system because of its simple structure, high torque density, high power density and high efficiency. High power density motor generally refers to high speed high power density motor and high torque high power density motor.
Permanent magnet motor creates a "strong heart" of new energy vehicles"
2023-07-28
Not long ago, with the electric vehicles of well-known domestic car companies such as Geely Automobile and Zhongtong Bus offline, more than 70000 high-performance permanent magnet motors for new energy vehicles have been installed.
How to choose a suitable AC brake motor
2023-07-28
AC brake motor is a kind of electric motor commonly used in machinery and industrial equipment. They are driven by AC power and can provide strong torque and stable operation. However, there are various types and specifications of AC brake motors on the market, and choosing a motor that suits your needs may be confusing. This article will introduce some key points and suggestions for choosing an AC brake motor to help you make an informed decision.
Comparison of AC brake motor and DC brake motor
2023-07-28
AC brake motor and DC brake motor are two common motor types, which have their own advantages and limitations in different application fields. In this article, we will compare these two motors and explore their application in braking systems.
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