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1. Symmetrical component method
1.1 Principle
Fortescue's symmetrical component method involves substituting a system of q "generator" quantities for an unbalanced system of q complex quantities, to define q balanced "q-phase" systems. These latter quantities are the symmetrical components of the initial system.
The transformation is performed by a complex matrix operator, called a Fortescue matrix, of order q, denoted [F q ].
So, for the initial system :
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