The value of these fluids is realized when a magnetic field is applied; micron sized ferrous particles suspended in the fluid align parallel to the flux path
, creating particle chains.
The actual torque computation is done by integrating along the entire flux path
under half of the slot opening .
Mutlu, "Modelling of the Short Flux Path
Mutually Coupled Switched Reluctance Machine", Ph.D.
Hence, the thickness of PM is the dominant part in the flux path
. However, for PMV machines, the harmonics in air-gap are used to produce torque, which means that PMV machines are very sensitive to the air-gap length.
If the main pole saturates, the reluctance of that flux path
where reluctance R is the inverse of permeance, the flux path
length for each element is L, and flux path
width W is simplified to the width of the core.
However, in the course of operation, a magnetic flux path
is formed when electric current is put through the coil assembly.
Figure 5(b) shows a flux barrier rotor made of standard flat laminations, where the flux barriers are punched in the traditional way in order to obtain the preferred flux path
. Thin ribs are left when punching, thus connecting to each other the various rotor segments.
Unlike the radial flux path
found in most conventional motors, the flux flows through the stator parallel to the shaft.
This is a 25 percent increase in torque over earlier models and the higher torque is produced by a triple flux path
within the unit.