scholarly journals The calculation of the magnetic circuit of salient-pole electric machines

2018 ◽  
Vol 457 ◽  
pp. 012022
Author(s):  
K Zhumagulov ◽  
Ye Sarsikeyev ◽  
D Kapanova
Keyword(s):  
Magnetic Circuit ◽  
Electric Machines ◽  
Salient Pole

Computer aided design of electromechanical transducer of gated traction motor by using modern software

2016 ◽  
pp. 72-79
Author(s):  
Roman Proshutinsky ◽  
Oleg Kolodkin
Keyword(s):  
Computer Aided Design ◽  
Magnetic Circuit ◽  
Electric Machines ◽  
Traction Motor ◽  
Traction Drive ◽  
Cad System ◽  
Electromechanical Transducer ◽  
Electric Traction ◽  
Aided Design ◽  
Femm Software

Objective: To develop a system of computer aided design for electrical traction drive complex, as a component of CAD for electric rolling stock. Modern approach for electrical traction drive complex design means the development of assembly of interconnected systems, such as electrical traction motor, transducer, control system, etc. The most striking instance of such an assembly is gated traction motor, that is somehow in-between electric machines and electric drives. It is usefull to start the developing of CAD gated traction motor by developing the CAD system for electromechanical transducer of gated traction motor. Methods: In the base of CAD system under development there is a technology of design of electromechanical transducer of gated traction motor. At the stage of electromechanical transducer magnetic circuit calculation the software for simulation of magnetic fields by finite elements method was used. Results: The paper suggests the structure diagram of CAD system for electromechanical transducer of gated traction motor. Calculating software language is Octave. The paper provides the results of magnetic field calculations for electromechanical transducer of gated traction motor FEMM software for finite-element simulation. Based on the results of magnetic field calculations the curve of electromechanical transducer energizing is plot. Also the practicability of FEMM software implementation at the design stage of magnetic circuit is confirmed. Practical importance: Obtained results are useful for creation of educational and research system for CAD for electric traction drive complex. Development of CAD system for gated traction motor will allow to master methods and approaches of design for electric machines and semiconductor complexes of electric traction drives in general.

scholarly journals The influence of eddy currents on the excitation winding impedance of solid and laminated salient pole synchronous machines

2020 ◽  
Vol 102 (4) ◽  
pp. 2553-2566
Author(s):  
Roberto Felicetti ◽  
Curt Johan David Abrahamsson ◽  
Urban Lundin
Keyword(s):  
Eddy Currents ◽  
Magnetic Circuit ◽  
Voltage Regulation ◽  
Current Control ◽  
Synchronous Machines ◽  
Synchronous Generators ◽  
Periodic Field ◽  
Materials Properties ◽  
Salient Pole ◽  
Excitation Winding

Abstract This work investigates the establishment of steady-state eddy currents in solid and laminated salient poles and rotor rim of synchronous machines due to a periodic excitation voltage. It shows that the presence of eddy currents in the rotor magnetic circuit has the double effect of increasing the excitation winding AC-resistance and decreasing its magnetizing AC-inductance. According to that a simple analytical model is presented in here which allows a rapid rough estimation of the excitation winding AC-resistance when little information is available about the machine geometry and its electric/magnetic materials properties. The model is then verified by reproducing in frequency the excitation winding AC-resistance and the related power loss measured in two synchronous generators. Finally, the limits of reliability and applicability of the model are discussed. The model has implications for periodic field winding current control and voltage regulation in synchronous machines.

Research on the Mathematics Model of a Permanent Magnet Linear Oscillatory Actuator with Moving Iron and Non-Salient Pole

2012 ◽  
Vol 443-444 ◽  
pp. 169-176
Author(s):  
Hai Peng Pan ◽  
Yang Wang ◽  
Yong Ming Xia ◽  
Wei Zhang
Keyword(s):  
Mathematical Model ◽  
Permanent Magnet ◽  
Magnetic Circuit ◽  
Mathematics Model ◽  
The Finite Element Method ◽  
Coil Current ◽  
Salient Pole ◽  
The Mathematical Model ◽  
The Relationship ◽  
Selection Of

A novel permanent magnet (PM) linear oscillatory actuator (LOA) of moving-iron and non-salient pole was presented on the basis of LOA research. The mathematical model of the LOA based on the magnetic circuit method was established, and derived the relationship between electromagnetic thrust and coil current, mover’s displacement. The thrust of LOA was simulated by the Finite Element Method (FEM). The corresponding experimental results verifies the electromagnetic thrust is direct proportional to coil current and reverse proportional to mover’s displacement during effective mover’s displacement. So the derived mathematical model based on the magnetic circuit method is correct. This conclusion provides a theoretical basis for the further calculation of thrust, the selection of control current and the design of controlling method.

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