Patent ID: 7528584
Filing Date: 2009-05-05
Classification: H02J,H02M,Y02T

Abstract:
1. A voltage regulator in an automatic voltage charging system for a battery including an AC magneto generator having a three phase winding in which each phase winding is connectable to the battery and to earth, said voltage regulator comprising: a rectifier Schottky diode connected between each phase winding of the magneto generator and the battery and a power MOS transistor branched-off between each phase winding and an earth terminal; and voltage control means comprising an electronic control unit for each phase winding connected to a control electrode of a respective power MOS transistor to drive the latter between ON and OFF states, each control unit being conformed and preset to detect a phase voltage of the magneto generator, respectively to detect the voltage of the battery, and to switch the power MOS transistor between the ON and OFF states when the detected phase voltage of the magneto generator is passing through zero, wherein all the power MOS transistors are maintained in an ON state when the battery voltage detected by the control units is higher than a rated charging value of the same battery.