Hybrid control method of the voltage of a permanent magnetic generator

Resumo

A new method for the parametric stabilization of the AC output voltage of permanent magnetic generators (PMGs) is presented, the method is investigated, and its availability is shown. The research results were derived using the numerical methods by computer simulation with the Ansoft Maxwell software package. The core of the developed method is that the magnetic conductor of the generator stator at the design stage is made with such geometrical dimensions that its saturation is reached when the generator is idling. The artificial saturation of the magnetic conductor is carried out up to the value of magnetic induction at which the generator’s idling voltage is close to the rated value, due to the increased magnetomotive force (MMF) in the back of the stator and decreased MMF in the air gap. When connecting the load to the generator the MMF in the back of the stator decreases under the action of the magnetic field of the anchor and thus the PMG output voltage is stabilized.