1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Electric generator using a triangular diamagnetic levitating rotor system
Rent:
Rent this article for
USD
10.1063/1.3072882
/content/aip/journal/rsi/80/2/10.1063/1.3072882
http://aip.metastore.ingenta.com/content/aip/journal/rsi/80/2/10.1063/1.3072882
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

A triangular levitating rotor and the experimental setup. The black diamagnetic plates (pyrolitic graphite) vertically stabilize the rotor.

Image of FIG. 2.
FIG. 2.

The two coils used for the emf experiments: (a) circular coils; (b) segmented arc coils.

Image of FIG. 3.
FIG. 3.

Diagrams for developing the emf equations for various planar coils. The top diagram shows a general planar shape and the middle and bottom ones show specific cases for the experiments.

Image of FIG. 4.
FIG. 4.

Effect of changing angular coil width. When a magnet’s path inside and outside a set of coils is equal, the generated wave form is symmetric (center graph).

Image of FIG. 5.
FIG. 5.

Around a magnet there is a surface where the component for vertical flux density is zero (dashed line).

Image of FIG. 6.
FIG. 6.

The curves show the location where for magnets with different aspect ratios as well as the linear approximations for each curve.

Image of FIG. 7.
FIG. 7.

The curve for the change in slope as a function of magnet aspect ratio and the corresponding linear regression.

Image of FIG. 8.
FIG. 8.

Wave forms generated from varying coil distance from a rotation center but keeping a constant angular width. The rotor magnet positions followed the coils. Further positions produce higher emf but wave forms have more undesired ripples.

Image of FIG. 9.
FIG. 9.

The corresponding harmonics from the wave forms of Fig. 8.

Image of FIG. 10.
FIG. 10.

Geometry used to find the radial distance from a rotation axis for placing rotor magnets. The figure shows the arc method (a) and the straight line method (b) for straight end arc coils.

Image of FIG. 11.
FIG. 11.

Geometry used to find the radial distance from a rotation axis for placing rotor magnets with circular coils.

Image of FIG. 12.
FIG. 12.

Simulated wave form using a design predicted by the optimization theory with no adjustments. All the dimensions are nondimensionalized by magnet thickness (1.6 mm).

Image of FIG. 13.
FIG. 13.

Simulated wave form using a design optimized manually by moving rotor magnet locations closer to the rotor’s center. All the dimensions are nondimensionalized by magnet thickness (1.6 mm).

Image of FIG. 14.
FIG. 14.

Comparison between simulated and actual wave forms for the first emf experiment using segmental arc coils.

Image of FIG. 15.
FIG. 15.

Comparison between simulated and actual wave forms for the second emf experiment using circular coils with manual optimization.

Loading

Article metrics loading...

/content/aip/journal/rsi/80/2/10.1063/1.3072882
2009-02-12
2014-04-17
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electric generator using a triangular diamagnetic levitating rotor system
http://aip.metastore.ingenta.com/content/aip/journal/rsi/80/2/10.1063/1.3072882
10.1063/1.3072882
SEARCH_EXPAND_ITEM