The comparative analysis of the brushless dc generator structures
Information is systematized concerning to the structural synthesis of brushless dc generator with pulse number of the rectified voltage w/3 = 12. Four types of brushless dc generator with the summation of current channels: without transfilters (TF), with TF in DC circuit and with TF in AC circuit are examined. An approach to the comparative assessment of alternative variants of brushless dc generator, which is based on the power determination of armature windings, on the determination of the spectral composition of their phase currents and the resulting magnetizing force (MF) is proposed. This information is necessary for the calculation of the excitation system of brushless dc generator and the losses in its armature and inductor. It is shown that the variant of brushless dc generator with TF in AC circuits allows achievement the best functional properties and the lowest power-to-size ratio (according to the proposed macro-analysis method characterized by the assumptions made).