Improved Transverse Flux Type Permanent Magnet Reluctance Generator With Auxiliary Rotor Pole Inserted Permanent Magnet

Oh, Juhwan; Kwon, Byung-il

doi:10.1109/tmag.2014.2332190

Cited by 11 publications

(3 citation statements)

References 9 publications

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“…Moreover, due to the decoupling of magnetic and electric load, the TFPM machine in comparison with the radial flux machine and axial flux machine also has the more outstanding capability of having large pole numbers. Therefore, it can be used for low-speed, large-torque, direct-drive applications, such as wind power generation and wave energy generation [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A Novel Transverse Flux Permanent Magnet Disk Wind Power Generator with H-Shaped Stator Cores

et al. 2018

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This paper presents a novel transverse flux permanent magnet disk generator (TFPMDG) for wind power generation. The main features of its structure are the modular H-shaped stator cores and two simple rotor disks. What is different from the structures introduced in the references is that each H-shaped stator core is formed by two T-shaped iron cores and a permanent magnet (PM) rather than a complete H-shaped core, which makes the manufacturing simpler and easier. Each rotor disk consists of a rotor holder and several rotor bars, resulting in high robustness and reliability. Moreover, two circular coils in the H-shaped stator cores together with the stator disk are sandwiched by the two rotor disks, which improves the utilization of PMs. In this paper, the proposed TFPMDG is investigated in detail. Firstly, the structure and operating principle are introduced. Then, the magnetic circuit method is used to analyze the TFPMDG. Next, the three-dimensional (3D) finite element method (FEM) is employed to compute the magnetic field distribution and EMF at no load. According to the calculation result, the other three TFPMDGs with different shapes of rotor cores are proposed and analyzed for better back EMF, and then a generator with good performance is selected for load analysis. Finally, a prototype is fabricated and tested, and the simulated results are compared with the measured ones, which proves the rationality of the simulated results.

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Section: Introductionmentioning

confidence: 99%

A Novel Transverse Flux Permanent Magnet Disk Wind Power Generator with H-Shaped Stator Cores

et al. 2018

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“…Because of this unique feature, the torque density of these machines could increase up to several times of conventional machines by increasing the number of poles. As the mass and volume of electric machines are dependent on their nominal torque, this unique feature of TFPM machines is used in industrial arms and 3-D printers [7], electric vehicles [8,9], and low speed applications, such as railway traction [10,11], wind power generators [12][13][14], wave energy generators [15], ship propulsion motors [16] and marine propulsion motors [17], where access to high torque density is critical [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Impact of Number of Phases on Electromagnetic Torque Characteristics of Transverse Flux Permanent Magnet Machines

Alaeddini

Tahanian

Darabi

2019

AEM

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This paper presents an investigation on the influences of number of phases of Transverse Flux Permanent Magnet (TFPM) machines on the characteristics of developed electromagnetic torque. Electromagnetic torque is expressed in terms of the Fourier series of phase currents and internal voltages. After some algebraic and trigonometric calculations, a general equation is obtained that establishes a relationship between the electromagnetic torque ripples, number of phases and harmonic contents of both internal voltages and phase currents. This result is significant when it is required to design a few specific number of identical single-phase TFPM machines which finally they will be assembled such that to build a multi-phase machine with a minimum torque ripple. The design parameters of a case study Claw Pole TFPM machine are introduced with some details and a few FE based simulation results are given as the validations of the analytical approach of the present paper. The simulation results show clearly the impact of each harmonic of the internal voltages and phase currents on the torque ripple for various numbers of phases leading the designer to find out which number of single-phase machine combinations is the optimum one regarding the torque ripple.

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“…However, the reference did not vary according to the electromagnetic characteristics of the DSPMG. In [23,24], an asymmetrical half-bridge converter (AHBC) was chosen for a transverse flux type PM reluctance generator (PMRG), which is one type of DSPMG. The operation process is the same as that for the SRG in [25].…”

Section: Introductionmentioning

confidence: 99%

Improvement of power generation performance in a doubly salient permanent magnet generator with a capacitive energy recovery converter

Liang

Kou

et al. 2017

IET Electric Power Applications

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In order to improve the power generation performance of a doubly salient permanent magnet generator (DSPMG), this study proposes a new converter called capacitive energy recovery converter (CERC), together with the corresponding control strategy. The CERC is composed of controllable devices, uncontrollable devices, and an energy storage circuit. The control strategy has been designed based on analysis of the electromagnetic characteristics of the DSPMG. With the proposed control strategy, the winding current of each phase can be controlled and increased separately, thus yielding large negative electromagnetic torque against the prime mover in a complete electric cycle. At the same time, the excitation sources are independent of the load part. As a result, power generation performance of the DSPMG with CERC is improved compared to that with a traditional three-phase full-bridge converter. A multi-objective optimisation problem is formulated to find the optimal turn-on and turn-off angles of two systems, which are used as control parameters in this comparison. Besides the lower voltage and torque ripples, the dynamic and fault-tolerant performance of the DSPMG with CERC is also superior. Both simulations and experiments have been conducted to verify the validity of the proposed converter and the control strategy.

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Improved Transverse Flux Type Permanent Magnet Reluctance Generator With Auxiliary Rotor Pole Inserted Permanent Magnet

Cited by 11 publications

References 9 publications

A Novel Transverse Flux Permanent Magnet Disk Wind Power Generator with H-Shaped Stator Cores

A Novel Transverse Flux Permanent Magnet Disk Wind Power Generator with H-Shaped Stator Cores

Impact of Number of Phases on Electromagnetic Torque Characteristics of Transverse Flux Permanent Magnet Machines

Improvement of power generation performance in a doubly salient permanent magnet generator with a capacitive energy recovery converter

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