Leakage reactance of polyphase machines
Leakage reactance = 2πf x inductance
= 2πf x Flux linkage / current
Note:
1.
Useful
flux: It is the flux that links with both primary and secondary windings and is
responsible in transferring the energy Electro-magnetically from primary to
secondary side. The path of the useful flux is in the magnetic core.
2.
Leakage
flux: It is the flux that links only with the primary or secondary winding and
is responsible in imparting inductance to the windings. The path of the leakage
flux depends on the geometrical configuration of the coils and the neighboring
iron masses.
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