単相低周波用誘導子形回転機を用いた無ブラシ無整流子電動機の構成

概要

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Previously, we had tried to improve the inductor type high-frequency generator to apply to the commercial frequency range, paying attention to the fact that it is a brushless machine. It has many remarkable features in the structure compared with the ordinary rotating machine. The magnetic field acts along the axial direction. The armature coils are wound in the form of solenoid on the iron cores that are arranged in parallel along the axial direction with proper distance along the periphery of the stator. The shape of magnetic pole piece is choiced so that it can maintain easily the sufficient contrast of the sparseness and denseness of magnetic flux. In this paper, we will explain a method of construction of a brushless and commutatorless motor which uses the low-frequency single-phase inductor machine with the series diode system thyristor bridge inverter. In this case, it is a remarkable feature to be able to eliminate the distributor which is using in the usual commutatorless motor. Instead of the distributor, the e.m.f. induced in the pilot winding, which is wound separately on the armature core, is used to detect the position of the rotor. Therefore, the position detector becomes very simply, but its function is exact under the various loads. Moreover, we will refer to a determining method of revolving direction and a counterplan to prevent rotor from falling into dead point.
山梨大学の論文