Concept Validation of an Automotive Variable Flow Water Pump With an Eddy Current Magnetic Coupling

2021 ◽  
pp. 1-1
Author(s):  
Rodrigo B. Bronzeri ◽  
Ivan E. Chabu
Keyword(s):  
Eddy Current ◽  
Magnetic Coupling ◽  
Water Pump ◽  
Variable Flow ◽  
Concept Validation

scholarly journals Analysis of eddy current loss in magnetic coupling based on three-dimensional finite element calculation

2021 ◽  
Vol 2093 (1) ◽  
pp. 012039
Author(s):  
Xiaoyue Wang ◽  
Liang Cai ◽  
Yanqin Mao ◽  
Wanjun Guo
Keyword(s):  
Finite Element ◽  
Eddy Current ◽  
Three Dimensional ◽  
Magnetic Coupling ◽  
Eddy Current Loss ◽  
Finite Element Calculation ◽  
Element Calculation ◽  
Current Loss ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

Abstract Considering the end effect, the three-dimensional finite element calculation model of the magnetic coupling is established. The three-dimensional distribution nephogram of the induced current and eddy current loss on the isolation cover is obtained, and the distribution trends of the two are consistent. The influence of size, material, and operating condition of magnetic coupling on eddy current loss is studied. The results show that the selection of isolation material with high resistivity and the reduction of isolation thickness are helpful to reduce the eddy current loss. The higher the rotating speed of the magnetic coupling, the greater the eddy current loss. At the same speed, the greater the load, the greater the magnetic declination, the smaller the eddy current loss. The research results can provide a reference for reducing energy loss and cooling structure design of magnetic coupling.

scholarly journals Design optimization of an axial-field eddy-current magnetic coupling based on magneto-thermal analytical model

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Julien Fontchastagner ◽  
Thierry Lubin ◽  
Smaïl Mezani ◽  
Noureddine Takorabet
Keyword(s):  
Design Optimization ◽  
Analytical Model ◽  
Eddy Current ◽  
Convection Heat Transfer ◽  
Design Procedure ◽  
Magnetic Coupling ◽  
Optimization Procedure ◽  
Computationally Efficient ◽  
Transfer Coefficients ◽  
Good Efficiency

Abstract This paper presents a design optimization of an axial-flux eddy-current magnetic coupling. The design procedure is based on a torque formula derived from a 3D analytical model and a population algorithm method. The main objective of this paper is to determine the best design in terms of magnets volume in order to transmit a torque between two movers, while ensuring a low slip speed and a good efficiency. The torque formula is very accurate and computationally efficient, and is valid for any slip speed values. Nevertheless, in order to solve more realistic problems, and then, take into account the thermal effects on the torque value, a thermal model based on convection heat transfer coefficients is also established and used in the design optimization procedure. Results show the effectiveness of the proposed methodology.

Study on the Thermal-Magnetic Coupling Characteristics of Integrated Eddy Current Retarder

2016 ◽  
Author(s):  
Yangjie Ji ◽  
Jiaqi Wang ◽  
Yingxiao Xu ◽  
Ziang Liu ◽  
Yongchi Zhou ◽  
...  
Keyword(s):  
Eddy Current ◽  
Magnetic Coupling ◽  
Coupling Characteristics ◽  
Eddy Current Retarder

Application of Fieldbus and Frequency Conversion Technology in Air-Condition VWV System

2011 ◽  
Vol 90-93 ◽  
pp. 3068-3072
Author(s):  
Gui Rong Wang ◽  
Cong Zhi Zhang
Keyword(s):  
Pid Control ◽  
Frequency Conversion ◽  
Flow System ◽  
Frequency Converter ◽  
Electric Energy ◽  
Constant Flow ◽  
Water Pump ◽  
Variable Flow ◽  
Rotating Speed ◽  
Chilled Water

This paper presents a method which uses LonWorks control system and frequency converter in Central Air-Condition chilled water variable flow system. In this system, the output of frequency converter can be altered by augmenter PID control rule which is used in control of invariable difference in temperature between water supply and backwater, and the rotating speed of water pump can be changed correspondingly, so when the user load is small ,the electric energy consume can be reduced. The effect of energy-saving was visible comparing with the conventional Air-Condition chilled water constant flow system.

Development of a Magnetic Coupling Water Pump for a Four-Stroke 50cm3 Scooter Engine

2002 ◽  
Author(s):  
Yutaka Miyake ◽  
Tadashi Niino ◽  
Masatoshi Fukamachi ◽  
Shin Nabeya ◽  
Osamu Sato
Keyword(s):  
Magnetic Coupling ◽  
Water Pump

Study on the Eddy Current Loss Characteristic of the Coaxial Cylinder Style Magnetic Coupler

2012 ◽  
Vol 151 ◽  
pp. 41-46
Author(s):  
Hong Jun Zhang ◽  
Xian Feng Du ◽  
Bao Li
Keyword(s):  
Magnetic Field ◽  
Eddy Current ◽  
Power Loss ◽  
Eddy Currents ◽  
Magnetic Coupling ◽  
Coaxial Cylinder ◽  
The Finite Element Method ◽  
Eddy Characteristics ◽  
The Impact ◽  
Loss Characteristic

This paper analyzed the eddy characteristics of the coaxial cylindrical magnetic coupler by using the finite element method, and simulated the impact of eddy currents on magnetic field. These effects mainly reflected in: weakening the magnetic coupling of the magnetic field intensity, and reducing the magnetic coupling torque. In addition, this paper calculated eddy current power loss, and proposed specific programs to reduce the eddy current power loss.

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