Abstract : This study deals with dynamic modelling and control of embarked electrical networks which are multi-alternators multi-loads systems with strong interactions between the components. Two modelling approaches had been studied. The first one is in view of simulation. It consists of building a modelling methodology for multi-alternators multi-loads systems. The system is subdivided into two decoupled subsystems: electrical and mechanical. The global electrical state space model is built using the equalities between the various electrical circuits in one common frame. In order to optimize the computing time, the modelling rules are expanded and an inversion method is proposed for the inductance matrix. The second one, in view of control, treats and compares two models, one is a behavioural model, and the other is based on the singular perturbation theory. The synthesized regulators had been compared using an elementary simulator. The study of variable parameters regulators contribution had been started. Two benchmarks had been realized. The software benchmark reproduces the network temporal behaviour for transient and steady states, as well as phenomena like, coupling, decoupling and desynchronisation. It allows testing the regulators: voltage, frequency.... The other benchmark is experimental. It allows validating the proposed approaches for modelling, simulation and control.