Core Loss Calculation in Step Magnetic of High-Speed Motor Stator

2011 ◽  
Vol 383-390 ◽  
pp. 476-482
Author(s):  
Jia Kuan Xia ◽  
Xing Jia Wang ◽  
Jie Zheng ◽  
Hua Zhang
Keyword(s):  
Magnetic Field ◽  
High Speed ◽  
Core Loss ◽  
Brushless Dc Motor ◽  
Bldc Motor ◽  
Accurate Calculation ◽  
Stator Core ◽  
Brushless Dc ◽  
Loss Calculation ◽  
Permanent Magnet Brushless Dc

According to the reduction for efficiency of high-speed permanent magnet brushless DC motor (High-speed PM BLDC motor) by core loss of stator in the design process, the accurate calculation for stator core loss is very important.2-D finite element method is used to analyze the alternating magnetic field and magnetic field of the stator core of which a rotational speed of 27000rpm high-speed BLDC motor. Harmonic analysis is used for the step magnetic field of high-speed BLDC motor, Based on the model of Bertotti iron loss calculation, superposition of various frequency loss will be calculated, the calculation accuracy was validate to increase.

Thermal Analysis of a Fluid Immersed Brushless DC Motor for Aerospace Applications

2013 ◽  
Vol 416-417 ◽  
pp. 1126-1131
Author(s):  
Wei Chen ◽  
Xiao Yan Huang ◽  
Jien Ma ◽  
You Tong Fang
Keyword(s):  
Thermal Behavior ◽  
High Speed ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Cfd Model ◽  
Brushless Dc ◽  
Aerospace Applications ◽  
Actuation System ◽  
Computational Fluid Dynamics Cfd ◽  
Permanent Magnet Brushless Dc

In this paper, the thermal behavior of a 12kW, 12000rpm, wet-type Permanent Magnet Brushless DC motor (BLDC) with skydrol oil inside designed for electro-hydraulic actuation system (EHA) was analyzed. A 3-D computational fluid dynamics (CFD) model has been built. The influence of skydrol hydraulic oil in thermal behavior at both low-speed and high-speed conditions was discussed. The results confirm that the skydrol oil passing through the motor has different impact on the thermal performance in different conditions.

Cogging Torque Reduction in Permanent Magnet Brushless DC Motor by using Various Design Modification Techniques

2020 ◽  
Vol 12 (2) ◽  
Author(s):  
M. Arun Noyal Doss ◽  
A. Ananthi Christy ◽  
Aishwarya Manibala Jha ◽  
Abhishek Iyer ◽  
R. Varun
Keyword(s):  
Computer Aided Design ◽  
Brushless Dc Motor ◽  
Bldc Motor ◽  
Element Analysis ◽  
Design Modification ◽  
Cogging Torque ◽  
Brushless Dc ◽  
Permanent Magnet Brushless Dc ◽  
Torque Values ◽  
Aided Design

Cogging torque is a problem for continuous motion applications like scanning, contouring and mainly positioning applications that requires smooth and accurate motion. It degrades the performance and the life of the motor. Cogging torque cannot be completely omitted but can be reduced drastically using various design modification techniques. This paper focuses on reducing cogging torque in BLDC using three different techniques like stator slot modification, rotor magnet modification and skewing of stator slots and rotor magnets. The result obtained by combining these three techniques has yielded a new model with reduced cogging torque and trapezoidal Back Electromotive Force as compared to the conventional BLDC motor. Also, the cogging torque values for different rotor magnets and stator slots shapes are calculated and studied using Finite Element Analysis (FEA). A detailed thermal analysis of the same model presents the temperature and heat flow plots using Computer Aided Design (CAD).

Research on Transient Electromagnetic Field Model of High Speed Permanent Magnet Brushless DC Motor Based on the Theory of Constant Electromagnetic Field

2016 ◽  
Vol 13 (10) ◽  
pp. 6539-6548
Author(s):  
Fan Jinrui ◽  
Li Hong ◽  
Ding Yongjie ◽  
Yu Daren ◽  
Li Dong
Keyword(s):  
Electromagnetic Field ◽  
Permanent Magnet ◽  
High Speed ◽  
Field Model ◽  
Dc Motor ◽  
Brushless Dc Motor ◽  
Brushless Dc ◽  
Transient Electromagnetic ◽  
Constant Electromagnetic Field ◽  
Permanent Magnet Brushless Dc

The development of ultra-high speed motor is the development direction of the information industry in the future, and it is also the important guarantee for the production efficiency. Objective: To study the working model of the electromagnetic field of the permanent magnet brushless DC motor in the condition of constant electromagnetic field. Methods: Based on the theory of constant electromagnetic field, the model of a high speed permanent magnet brushless DC motor is derived. Process: Combined magnetic circuit calculation method and finite element method of electromagnetic field, and then use the mathematical model to calculate the electromagnetic. Finally, by using the model simulation to verify its practicability. Conclusion: The inhibiting effect of the ring structure rotor pole and cogging torque ripple can meet the requirements of high-speed motor mechanical and electromagnetic performance, meanwhile, the motor has a good performance in this way. So, it can provide reference for the construction of the transient electromagnetic field model of high speed permanent magnet brushless DC motor in the future.

Modeling and Simulation of Sensorless Control of BLDC Motor Based on Submersible Pump

2013 ◽  
Vol 312 ◽  
pp. 786-790
Author(s):  
Zi Kuan Zhang
Keyword(s):  
Sensorless Control ◽  
Hall Sensor ◽  
Brushless Dc Motor ◽  
Bldc Motor ◽  
Submersible Pump ◽  
Work Condition ◽  
Zero Crossing ◽  
Brushless Dc ◽  
Motor Control System ◽  
Permanent Magnet Brushless Dc

In this paper, modeling selects sensorless control of permanent magnet brushless DC motor in terms of work condition of submersible pump under water. Motor reduced by Hall sensor so that maintenance. Motor was controlled by state space and back EMF zero-crossing in Matlab/Simulink, and constitute total simulation system along with the other modules. Eventually, motor character was estimated in accordance with waveforms of simulation, which offers foundation for the design of actual motor control system.

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