Selection of Steel Spacer

For an increase in the width of steel spacer, the flux density at the translator will decrease in the approximately inverse relationship of equation (5.4), illustrated in Figure 5.3. In an attempt to exploit magnetic gearing, the entire translator pole width should be kept to a minimum, the lower limit being the maximum flux density permitted before the steel saturates.

Figure 5.3: Variation of surface flux density with width of steel spacer

Figure 5.3 shows that a steel piece of width 25 mm corresponds to a surface flux density of 0.65 T, around half that at which steel starts to saturate. It can therefore be assumed that saturation will not occur until the mmf from the coils matches that of the magnets. Furthermore, selecting a steel width equal to that of the magnet piece has been previously recommended, [72] and section

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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