無励磁機方式のブラシレス自励三相同期発電機

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This paper describes principles together analytic and experimental studies of an exciterless, brushless, and self-excited three-phase synchronous generator which was devised by authors. As traditonal brushless and DC self-excited three-phase synchronous generators without exciter didnt have the self-exciting function by series characteristic component proportional to the load current inside the generator, they need auto-voltage regulating equipment or together a transformer with three windings and condensers in order to get constant voltage characteristics. It has also the following problem in the case of two-pole traditional generator: Oscillatory tension is generated at the shaft of the rotor causing by the magnetic force between magnetic poles of stator and rotor windings; it causes mechanical vibration and noise.This paper proposes a new brushless and self-excited three-phase generator solving the above-problems: the ratio of poles of the windings for providing power to load (armature and field windings) to the windings for supplying exciting power (stator and rotor exciting windings) is 1 to 5, then oscillatory tension does not generated theoretically. Furthermore, a self-exciting using the 5th-harmonic component of armature reaction which makes series characteristic component proportional to the load current, is available.In this paper, the winding construction, the electric circuit, and the principle of the above stated generator are described. and the experimental results of the trial producted generator show that the three-phase terminal voltage wave forms are almost sinusoidal and are also balanced, and the voltage can be kept near constant for the change of load. This generator has high reliability because of simple construction.
社団法人電気学会の論文

無励磁機方式のブラシレス自励三相同期発電機

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