Circuit coupling

Introduction

The Skew slots module comprises the possibilities of the circuit coupling.

Reminder: automatic management of symmetries/periodicities

In order to take into consideration the symmetries/periodicities in the flux computation (for stranded conductor coils), a specific coefficient called coil coefficient is introduced in Flux. This coefficient, automatically calculated by Flux, takes into consideration the number and type of symmetries and/or periodicities.

The flux obtained by numerical integration over the finite element domain is multiplied by the coil coefficient in order to obtain the real flux through the assembly of coil turns.

Except for special cases, the user must therefore describe the entire electrical circuit in order to obtain a coherent result in Flux.

Warning

2D users have the habit of describing the circuit for the part of the machine, which is represented (1/n), while 3D users represent the circuit for a complete machine, even if, in the finite element domain, only one part of the machine is represented (1/n).

Consequently, it might be necessary to readjust the coil coefficient in order to take into consideration these differences:

• if the circuit is described for 1/n of the machine, the coil coefficient is adjusted by the user and set at 1
• if the circuit is described for the complete machine, the coil coefficient is automatically adjusted by Flux.