Three-Phase Modulated Pole Machine Topologies Utilizing Mutual Flux Paths

Washington, Jamie; Atkinson, Glynn; Baker, Nick; Jack, A.G.; Mecrow, B.C.; Jensen, Bogi Bech; Pennander, L.; Nord, G.; Sjöberg, Lars E.

doi:10.1109/tec.2012.2184115

Cited by 43 publications

(41 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The major merit of TFM is its high torque ability, and no coupling between the adjacent modules compared with the radial flux machine and axial flux machine. In the last decades, various kinds of TFM were developed for high-performance drive applications, especially the direct drive applications [8][9][10]. The claw pole machine (CPM) is a special kind of TFM; it can have better performance compared with TFM, as the stator claw pole teeth is introduced for Figure 1 illustrates the topology of the initial CPM with SMC cores, which is a single phase model.…”

Section: Introductionmentioning

confidence: 99%

Design Issues for Claw Pole Machines with Soft Magnetic Composite Cores

Liu

Wang

et al. 2018

Energies

View full text Add to dashboard Cite

By using global ring winding, the torque coefficient of the transverse flux machine (TFM) is proportional to its number of pole pairs, and thus the TFM possesses high torque density ability when compared with other electrical machines. As a special kind of TFM, the claw pole machine (CPM) can have more torque due to its special claw pole teeth. The manufacturing of CPM or TFM with silicon steels was very difficult in the past, and is a handicap for the progress of this kind of machine. Thanks to the advent of soft magnetic composite (SMC) materials, the manufacturing process of CPM has become more and more simple. More attention has been paid to this kind of technology, and some mass production CPMs with SMC cores have appeared. However, there are few works that discuss the key design issues for this kind of machine. In this paper, a small CPM with SMC is used as as a research benchmark. Various design methods that can be adopted to improve its performance have been studied, including unequal stator claw pole teeth, a skewing magnet design, consequent pole design, and etc. The 3D finite element method (FEM) is used for the machine analysis, and it is verified by the experimental results of a CPM with SMC cores.

show abstract

Section: Introductionmentioning

confidence: 99%

Design Issues for Claw Pole Machines with Soft Magnetic Composite Cores

Liu

Wang

et al. 2018

Energies

View full text Add to dashboard Cite

show abstract

“…This has made TFPMM desirable for direct drive applications where a high torque is required at a low rotational speed, such as traction applications, free piston energy converter applications, wind turbines, and wave energy converters [4,6,7]. TFPMMs are also recognized as modulated pole machines [8,9]. The TFPMM usually has a toroidal armature winding, where the current runs parallel to the direction of rotation [10].…”

Section: Introductionmentioning

confidence: 99%

“…Since the overall winding can link the Permanent Magnet (PM) fluxes from all the magnetic poles of the machine, TFPMM can reach higher torque when compared with the radial flux and axial flux machines [2][3][4]12,13]. Another advantage of the TFPMM is that the electrical and magnetic circuits of the machine are excellently decoupled [9]. The performance of the magnetic circuit is defined by the teeth and core-back of the machine.…”

Section: Introductionmentioning

confidence: 99%

“…The number, size, and circumferential position of the teeth can be fixed individually based on the size of the coil, which specifies the electrical performance of the machine for a certain thermal limit. Moreover, as the magneto-motive force of the coil is distributed across all the teeth of the machine, an increase in the tooth number (effectively, a decrease in the pole pitch) results in an increase in the electrical loading of the machine [8,9,14]. TFPMMs suffer from a common set of drawbacks, namely a high cogging torque (and consequently a high torque ripple) [15], and a low power factor [16,17].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design, Analysis and Fabrication of a Novel Transverse Flux Permanent Magnet Machine with Disk Rotor

Azarinfar

Aghaebrahimi

2017

Applied Sciences

View full text Add to dashboard Cite

Abstract:The purpose of this paper is to propose a novel design for the transverse flux permanent magnet (TFPM) disk-rotor generator with E and I-shaped cores (TFPMDEIG). Disk-shape structure increases the machine's power factor, allows for high rotational speeds, decreases centrifugal force over permanent magnets, and is employed in wind turbines, due to its compact structures. As for other advantages for this structure, one can point to the fact that there are as many windings as machine's pole pairs; these windings become parallel by observing the polarity. In other words, the total power of this machine is distributed between pole pairs, increasing the overall reliability of the machine. In this paper, first, the initial design algorithm and the basic formulas governing the behavior of the proposed structure using the equivalent magnetic circuit for each pole are provided, and the three-dimensional finite element method (3D-FEM) is used for verification of the algorithm. To validate the simulation results (3D-FEM), then, a prototype has been fabricated and experienced. The experimental results are in good agreement with simulation results.

show abstract

“…If each electrical pole interacts with an individual permanent Comparison of flux switching and modulated pole linear machines for use with a free piston magnet, increasing the pole number increases the force output. Transverse flux and flux switching machines can both be classified as members of this family of machines, and have been shown elsewhere [13] to be capable of producing high force density operating under air cooled conditions. A number of alternative topologies are studied here, where the orientation and position of the magnets is altered.…”

Section: Introductionmentioning

confidence: 99%

Comparison of flux switching and modulated pole linear machines for use with a free piston

Wang

Baker

2015

2015 IEEE International Electric Machines &Amp; Drives Conference (IEMDC)

View full text Add to dashboard Cite

This paper investigates the design of direct drive linear generators for use in Free Piston Engines. Flux switching, modulated pole and surface mounted magnet machines are individually modelled and optimized to react the force of the engine with minimum magnet mass. The mass of magnet used in each design is found to be heavily dependent on the copper loading in the machine and the flux produced at no load. The modulate pole or transverse flux machine, which in other applications gives an extremely efficient use of magnet, is here shown to be more effective than conventional machines but less effective than the flux switching machine.

show abstract

Three-Phase Modulated Pole Machine Topologies Utilizing Mutual Flux Paths

Cited by 43 publications

References 15 publications

Design Issues for Claw Pole Machines with Soft Magnetic Composite Cores

Design Issues for Claw Pole Machines with Soft Magnetic Composite Cores

Design, Analysis and Fabrication of a Novel Transverse Flux Permanent Magnet Machine with Disk Rotor

Comparison of flux switching and modulated pole linear machines for use with a free piston

Contact Info

Product

Resources

About