scholarly journals Experimental Validations of Hybrid Excited Linear Flux Switching Machine

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7274
Author(s):  
Noman Ullah ◽  
Faisal Khan ◽  
Abdul Basit ◽  
Mohsin Shahzad
Keyword(s):  
Theoretical Study ◽  
Magnetic Circuit ◽  
Thrust Force ◽  
Electric Machines ◽  
Primary Tooth ◽  
Low Thrust ◽  
Suitable Candidate ◽  
Tooth Width ◽  
Four Corners ◽  
Experimental Validations

Linear Flux Switching Machines (LFSMs) possess the capability to generate adhesive thrust force, thus problems associated with conventional rotatory electric machines and mechanical conversion assemblies can be eliminated. Additionally, the unique features of high force/power density, efficiency, and a robust secondary structure make LFSMs a suitable candidate for linear motion applications. However, deficiency of controllable air-gap flux, risk of PM demagnetization, and increasing cost of rare earth PM materials in case of PMLFSMs, and inherent low thrust force capability of Field Excited LFSMs compels researchers to investigate new hybrid topologies. In this paper, a novel Double-Sided Hybrid Excited LFSM (DSHELFSM) with all three excitation sources, i.e., PMs, DC, and AC windings confined to short moving primary and segmented secondary providing short flux paths is designed, investigated, and optimized. Secondly, unequal primary tooth width optimization and additional end-teeth at all four corners of the primary equip proposed design with balanced magnetic circuit and reduced end-effect and thrust force ripples. Thirdly, the measured experimental results of the manufactured proposed machine prototype are compared with corresponding simulated model results and shows good agreements, thus validating the theoretical study.

Analysis and Performance Evaluation of a High Thrust Force Density Segmental Stator Linear Switch Reluctance Machine for Low Cost Conveyor Applications

2013 ◽  
Vol 416-417 ◽  
pp. 181-186
Author(s):  
Dao Han Wang ◽  
Xiu He Wang
Keyword(s):  
Performance Evaluation ◽  
Magnetic Circuit ◽  
Thrust Force ◽  
High Reliability ◽  
Low Cost ◽  
Force Density ◽  
Reluctance Machine ◽  
And Performance ◽  
High Thrust

This paper presents a novel linear switch reluctance machine (LSRM) with segmental stator. The principle of the presented machine is given and compared to the well-known teeth type linear switch reluctance machine. Because the presented machine incorporates a simple concentric winding and concrete ferrite-magnetic segmentations, it features unique magnetic circuit compared to teeth type linear reluctance machine. It is found that the presented linear reluctance machine gains favorable superiority over the teeth type linear reluctance machine in terms of high force density, high reliability and low cost. Different topologies of the presented machine are given and both their merits and demerits are discussed.

scholarly journals Design and Optimization of Complementary Field Excited Linear Flux Switching Machine With Unequal Primary Tooth Width and Segmented Secondary

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 106359-106371 ◽  
Author(s):  
Noman Ullah ◽  
Abdul Basit ◽  
Faisal Khan ◽  
Yasir Ali Shah ◽  
Amir Khan ◽  
...  
Keyword(s):  
Primary Tooth ◽  
Design And Optimization ◽  
Tooth Width

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.

Drilling CFRP Laminates by Dual-Axis Grinding Wheel System With Copper/Diamond Functionally Graded Grinding Wheel

2018 ◽  
Vol 140 (7) ◽  
Author(s):  
Takahiro Kunimine ◽  
Hideaki Tsuge ◽  
Daisuke Ogawa ◽  
Motoko Yamada ◽  
Hisashi Sato ◽  
...  
Keyword(s):  
Thrust Force ◽  
Three Dimensional ◽  
Chip Morphology ◽  
Force Sensor ◽  
Functionally Graded ◽  
Grinding Wheel ◽  
Drilling Process ◽  
Low Thrust ◽  
Hole Quality ◽  
Cfrp Laminates

This study aims to investigate the drilling performance of a copper/diamond functionally graded grinding wheel (FGGW) fabricated by centrifugal sintered-casting for carbon fiber-reinforced plastic (CFRP) laminates by originally designed dual-axis grinding wheel (DAGW) system. The copper/diamond FGGW was also originally designed and fabricated by the centrifugal sintered-casting to suppress abrasive-grain wear and reduce the consumption of abrasive grains in our previous study. Drilling tests were carried out over 50 holes in dry machining. Thrust force was evaluated with force sensor during drilling test. Hole diameter, roundness, and roughness were measured to assess hole quality. Drill chips were observed by scanning electron microscope (SEM) to investigate chip morphology. Precision drilling without burring and delamination was achieved in CFRP laminates. Good hole-quality was still obtained over 50 holes due to the low thrust force during drilling. Specific three-dimensional (3D) drilling process of the DAGW system enabled stable and precision drilling with low thrust force in CFRP laminates continuously.

Novel linear switched-flux PM machine with 9/10 primary/secondary pole number combination

2015 ◽  
Vol 34 (6) ◽  
pp. 1656-1672 ◽  
Author(s):  
Qinfen Lu ◽  
Yanxin Li ◽  
Yunyue Ye ◽  
J.T. Chen ◽  
Z.Q. Zhu
Keyword(s):  
Permanent Magnet ◽  
Thrust Force ◽  
Load Condition ◽  
Design Parameters ◽  
Force Density ◽  
Direct Drive ◽  
Low Thrust ◽  
Element Analysis ◽  
Content Type ◽  
Force Ripple

Purpose – Due to linear structure, linear switched flux permanent magnet machines (LSFPMMs) also may have odd pole primary, such as 9, 15, 21, etc., without unbalanced magnetic force in equivalent rotary machines. The paper aims to discuss these issues. Design/methodology/approach – In order to increase the thrust force density, the influence of some major design parameters, including split ratio, PM thickness, primary slot width and secondary pole width, are investigated by finite element analysis. For reducing the thrust force ripple under on-load condition, the end auxiliary teeth are adopted and their positions are also optimized. Findings – This novel 9/10 primary/secondary poles LSFPMM has high average thrust force and low thrust force ripple by optimization. The results demonstrate that the odd pole primary may be a good candidate for long-stroke linear direct drive application. Originality/value – A novel 9/10 primary/secondary poles linear switched flux permanent magnet machine is developed in this paper. The similar conclusions could be obtained for other LSFPMMs with odd pole primary.

Analysis of Charge Circuit and Discharge Circuit in Electromagnetic Riveting

2012 ◽  
Vol 241-244 ◽  
pp. 606-609
Author(s):  
Jiang Hua Deng ◽  
Yi Ming Zheng ◽  
Chao Tang ◽  
Yan Ran Zhan
Keyword(s):  
Magnetic Force ◽  
Theoretical Study ◽  
Magnetic Circuit ◽  
Electric Circuit ◽  
Circuit Model ◽  
Discharge Circuit ◽  
Charge Voltage ◽  
Maximum Value ◽  
Electromagnetic Riveting ◽  
Over Time

The analysis of charge circuit and discharge circuit is a key part in the theoretical study of electromagnetic riveting electromagnetic field. Numerical simulation was used to establish the charge circuit model and the discharge circuit model which was an electric circuit-magnetic circuit coupling process by ANSYS. The simulation of charge circuit shows that the development of the charge current over time is an exponential descending change and that of the charge voltage over time is an exponential ascending change. And, the simulation of discharge circuit indicates that the driver is mainly subjected to axial magnetic force, whose distribution is non-uniform along the radial direction of driver, and the maximum value of axial magnetic force locates in about half of the driver radius.

scholarly journals Magnetic Circuit Design and Finite Element Simulation Analysis of Magnetic Fluid Rotating Dynamic Sealing Device

CONVERTER ◽  
2021 ◽  
pp. 658-663
Author(s):  
Xiaojuan Li Et al.
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Circuit Design ◽  
Magnetic Fluid ◽  
Magnetic Circuit ◽  
Test Method ◽  
Element Simulation ◽  
Tooth Width ◽  
Dynamic Seal ◽  
Sealing Device

The magnetic fluid rotary dynamic sealing device is based on the magnetic fluid material. The typical sealing structure is to fill the magnetic fluid in the gap between the shaft and the magnetic pole, and keep it in the sealing gap under the action of the external magnetic field to form a liquid "O"-shaped sealing ring to block it. The sealing effect of this kind of device largely depends on the design of the magnetic circuit structure of the device. In this paper, ANSYS finite element simulation is used to analyze the influence of seal stages, tooth shape and the number of permanent magnets on the magnetic fluid rotating dynamic seal. The L9 (34) factor level table is designed by orthogonal test method to analyze the priority of the influence of tooth width, seal clearance and chamfering on the magnetic fluid sealing performance, which provides the reference for the structural design and magnetic circuit design of magnetic fluid rotating dynamic seal.

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