A Consequent-Pole Hybrid Exciter for Synchronous Generators

In low-to-medium power generating sets, a self-powered brushless excitation system is typically employed. This solution cost-effective, simple and compact, but it suffers from an unreliable voltage build-up at start-up, slow dynamic response relatively low efficiency for the exciter. The push towards more effective, reliable efficient products has recently led to consider systems equipped with permanent magnet exciters controlled rotating converters, their diffusion limited by higher complexity cost. article investigates utilization of hybrid exciter, aiming join benefits field windings magnets. As case study, this concept applied commercial mid-size set adopting industrial perspective, maximize while minimizing required modifications in design. After preliminary analysis, consequent-pole layout surface-mounted bonded magnets then selected as most effective solution. Theoretical considerations, numerical analysis experimental validation are reported show that can actually lead significant reduction exciter losses well other appreciable side very impact on present design set.