Weighted control of drives with series connected DC machines

A single converter is sometimes used to supply several machines in industrial drives. In these cases, their controls are generally based on a master slave strategy. An energetic macroscopic representation has been developed to study such systems. A maximum control structure is then deduced thanks to inversion rules. Specific criteria are defined in order to solve the coupling induced by the machines. Other solutions than master slave control can be found. A weighted control takes all the machine behaviors into account. In this paper, the methodology is applied to a traction system with DC machines connected in series.