A Review on Transverse Flux Permanent Magnet Machines for Wind Power Applications

Kumar, Rajesh; Zhu, Z. Q.; Duke, Alexander; Thomas, A.; Clark, Richard E.; Azar, Ziad; Wu, Zhanyuan

doi:10.1109/access.2020.3041217

Cited by 26 publications

(17 citation statements)

References 130 publications

(143 reference statements)

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“…The PMTFM's primary and most prominent advantage is its capability to produce high power and torque density. Flux density B 0 in the air gap of the TFPM machine can be stated as [23]:…”

Section: Core Pole Studymentioning

confidence: 99%

Design and FEM analysis of high‐power density C‐core permanent magnet transverse flux generator with reduced PM volume

Ali

Khan

Ullah

et al. 2022

IET Renewable Power Gen

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Transverse flux machines are made up of armature coils wound in a circular direction and surrounded by armature cores. This configuration enables machines to be designed for multi‐pole structures while maintaining a simple coil geometry regardless of the pole count. As a result, these machines generate more torque and power density than most of the machines with windings wound around teeth and inserted into slots. However, transverse flux machines continue to face manufacturing difficulties because a large number of relatively small permanent magnets are required. Thus, a permanent magnet transverse flux generator (PMTFG) is designed with half the magnets on the rotor in comparison with a regular design while generating 18% better power density at the same size and excitation conditions. After proper parameter selection, the electromagnetic performance of the design is examined, and the viability of the design is verified using a three‐dimensional finite‐element model (FEM). Further analyses were carried out to examine the effect of stator core material and air gap length on the performance of PMTFG. Furthermore, a prototype of the proposed topology is built, which validates the performance obtained through FEM.

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“…The PMTFM's primary and most prominent advantage is its capability to produce high power and torque density. Flux density B 0 in the air gap of the TFPM machine can be stated as [23]:…”

Section: Core Pole Studymentioning

confidence: 99%

Design and FEM analysis of high‐power density C‐core permanent magnet transverse flux generator with reduced PM volume

Ali

Khan

Ullah

et al. 2022

IET Renewable Power Gen

View full text Add to dashboard Cite

show abstract

“…TF generators from 180 W [66] to 50 kW [71] have been found in the literature. Besides, in [18] a review of wind energy applications for TFMs has been made.…”

Section: Applicationsmentioning

confidence: 99%

“…TFMs control is based on classical techniques for PMSMs control [18]. Figure 16 shows the (a) equivalent circuit and (b) phasor diagram of the iq control of a synchronous machine, under the assumption that both the stator and the rotor are cylindrical, so the d-and q-inductances are equal.…”

Section: Leakage and Power Factormentioning

confidence: 99%

“…According to the literature [14][15][16][17][18][19][20], TFMs were first introduced in 1895 by W. M. Morday, but they gained wider attention towards the end of the 20th century from the studies of Laithwaite et al [21], and Weh and May [22]. Figure 2a shows one pole pair of a basic TFM: a ring-shaped coil is embraced by stator U-cores that guide the magnetic flux from one permanent magnet (PM) to another.…”

Section: Introductionmentioning

confidence: 99%

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A Review of Transverse Flux Machines Topologies and Design

2021

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High torque and power density are unique merits of transverse flux machines (TFMs). TFMs are particularly suitable for use in direct-drive systems, that is, those power systems with no gearbox between the electric machine and the prime mover or load. Variable speed wind turbines and in-wheel traction seem to be great-potential applications for TFMs. Nevertheless, the cogging torque, efficiency, power factor and manufacturing of TFMs should still be improved. In this paper, a comprehensive review of TFMs topologies and design is made, dealing with TFM applications, topologies, operation, design and modeling.

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“…(a) (b) Due to their high performances compared to surface-mounted permanent magnet machines, many flux-concentrating TF-PMSGs have been reported in the literature. They could be either single-or double-sided, with or without iron bridges, single or double winding and with passive or active rotors (examples in Figure 16) [108,146,147].…”

mentioning

confidence: 99%

Electrical Generators for Large Wind Turbine: Trends and Challenges

2022

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This paper presents an overview of the emerging trends in the development of electrical generators for large wind turbines. To describe the developments in the design of electrical generators, it is necessary to look at the conversion system as a whole, and then, the structural and mechanical performances of the drive train need to be considered. Many drive train configurations have been proposed for large wind turbines; they should ensure high reliability, long availability and reduced maintainability. Although most installed wind turbines are geared, directly driven wind turbines with permanent magnet generators have attracted growing interest in the last few years, which has been in parallel to the continuous increase of the per unit turbine power. The aim of this work is to present the recent commercial designs of electrical generators in large wind turbines. Both the strengths and weaknesses of the existing systems are discussed. The most emerging technologies in high-power, low-speed electrical generators are investigated. Furthermore, a comparative analysis of different electrical generator concepts is performed, and the generators are assessed upon a list of criteria such as the mass, cost, and mass-to-torque ratio. Within the framework of these criteria, it may help to determine whether the electrical generator is technically feasible and economically viable for high-power wind turbines. Finally, this review could help to determine suitable generators for use in large and ultra-large wind energy systems.

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A Review on Transverse Flux Permanent Magnet Machines for Wind Power Applications

Cited by 26 publications

References 130 publications

Design and FEM analysis of high‐power density C‐core permanent magnet transverse flux generator with reduced PM volume

Design and FEM analysis of high‐power density C‐core permanent magnet transverse flux generator with reduced PM volume

A Review of Transverse Flux Machines Topologies and Design

Electrical Generators for Large Wind Turbine: Trends and Challenges

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