초록 ▼

Reverse current is supplied from a battery to armature coils of a three-phase synchronous power generator, via semiconductor switching devices of a three-phase full-wave rectifier, by controlling the switches. By this control, the reverse current will reduce waveform distortion of armature current o

Reverse current is supplied from a battery to armature coils of a three-phase synchronous power generator, via semiconductor switching devices of a three-phase full-wave rectifier, by controlling the switches. By this control, the reverse current will reduce waveform distortion of armature current of each phase so as to reduce the electromagnetic force pulsation and, therefore, reduce vibration or noise.

대표청구항 ▼

[ What is claimed is:] [1.] An AC power generating apparatus for charging a battery, comprising:an AC power generator having multi-phase armature coils and a Lundell-type field pole;AC-DC converting means having semiconductor switching elements respectively connected between the armature coils and t

[ What is claimed is:] [1.] An AC power generating apparatus for charging a battery, comprising:an AC power generator having multi-phase armature coils and a Lundell-type field pole;AC-DC converting means having semiconductor switching elements respectively connected between the armature coils and the battery, the AC-DC converting means being constructed to enable current flow from the armature coils to the battery and current flow from the battery to the armature coils;rotational speed detecting means for detecting a physical quantity related to rotational speed of the generator;phase detecting means for detecting a physical quantity related to phase of an electromotive force generated from the armature coils; andcontrol means for generating control signals on the basis of the physical quantities related to the rotational speed and the phase that control an on-off switch operation of the semiconductor switching elements of the AC-DC converting means when the generator is in an electric power generating operation, the control means generating the control signals to rectify electric power generated from the generator for supplying a charge current to the battery and to supply a discharge current from the battery to the armature coils for suppressing a fluctuation of an electromagnetic force caused by the on-off switch operation of the semiconductor switching elements when the charge current to the battery is switched off.