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A double-sided linear primary permanent magnet vernier machine.

Du Y, Zou C, Liu X - ScientificWorldJournal (2015)

Bottom Line: The key of this new machine is the introduction of double stator and the elimination of translator yoke, so that the inductance and the volume of the machine can be reduced.Hence, the proposed machine offers improved power factor and thrust force density.The electromagnetic performances of the proposed machine are analyzed including flux, no-load EMF, thrust force density, and inductance.

View Article: PubMed Central - PubMed

Affiliation: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China.

ABSTRACT
The purpose of this paper is to present a new double-sided linear primary permanent magnet (PM) vernier (DSLPPMV) machine, which can offer high thrust force, low detent force, and improved power factor. Both PMs and windings of the proposed machine are on the short translator, while the long stator is designed as a double-sided simple iron core with salient teeth so that it is very robust to transmit high thrust force. The key of this new machine is the introduction of double stator and the elimination of translator yoke, so that the inductance and the volume of the machine can be reduced. Hence, the proposed machine offers improved power factor and thrust force density. The electromagnetic performances of the proposed machine are analyzed including flux, no-load EMF, thrust force density, and inductance. Based on using the finite element analysis, the characteristics and performances of the proposed machine are assessed.

No MeSH data available.


Inductance waveforms of proposed machine. (a) Self-inductance waveforms. (b) Mutual inductance waveforms.
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fig12: Inductance waveforms of proposed machine. (a) Self-inductance waveforms. (b) Mutual inductance waveforms.

Mentions: Figure 12 shows the self-inductance and the mutual inductance waveforms of the proposed machine. It can be seen that the inductance values almost remain the same with respect to various translator positions. So the inductance can be regarded as a constant value in the whole electric period. In order to illustrate the performance of the proposed machine, the average inductance values of both machines are listed in Table 4. From the inductance comparison of both machines, it can be found that the 3-phase self-inductance and mutual inductance of the proposed machine are much smaller than the existing one. This is because the proposed machine adopts the double-stator structure and the total air-gap length is larger than the existing one [18]. Then the power factor, which is highly affected by the inductance and the no-load EMF, is greatly improved because of the increase of no-load EMF amplitude and the decrease of inductance values.


A double-sided linear primary permanent magnet vernier machine.

Du Y, Zou C, Liu X - ScientificWorldJournal (2015)

Inductance waveforms of proposed machine. (a) Self-inductance waveforms. (b) Mutual inductance waveforms.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4385675&req=5

fig12: Inductance waveforms of proposed machine. (a) Self-inductance waveforms. (b) Mutual inductance waveforms.
Mentions: Figure 12 shows the self-inductance and the mutual inductance waveforms of the proposed machine. It can be seen that the inductance values almost remain the same with respect to various translator positions. So the inductance can be regarded as a constant value in the whole electric period. In order to illustrate the performance of the proposed machine, the average inductance values of both machines are listed in Table 4. From the inductance comparison of both machines, it can be found that the 3-phase self-inductance and mutual inductance of the proposed machine are much smaller than the existing one. This is because the proposed machine adopts the double-stator structure and the total air-gap length is larger than the existing one [18]. Then the power factor, which is highly affected by the inductance and the no-load EMF, is greatly improved because of the increase of no-load EMF amplitude and the decrease of inductance values.

Bottom Line: The key of this new machine is the introduction of double stator and the elimination of translator yoke, so that the inductance and the volume of the machine can be reduced.Hence, the proposed machine offers improved power factor and thrust force density.The electromagnetic performances of the proposed machine are analyzed including flux, no-load EMF, thrust force density, and inductance.

View Article: PubMed Central - PubMed

Affiliation: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China.

ABSTRACT
The purpose of this paper is to present a new double-sided linear primary permanent magnet (PM) vernier (DSLPPMV) machine, which can offer high thrust force, low detent force, and improved power factor. Both PMs and windings of the proposed machine are on the short translator, while the long stator is designed as a double-sided simple iron core with salient teeth so that it is very robust to transmit high thrust force. The key of this new machine is the introduction of double stator and the elimination of translator yoke, so that the inductance and the volume of the machine can be reduced. Hence, the proposed machine offers improved power factor and thrust force density. The electromagnetic performances of the proposed machine are analyzed including flux, no-load EMF, thrust force density, and inductance. Based on using the finite element analysis, the characteristics and performances of the proposed machine are assessed.

No MeSH data available.