Three=phase current generator with diode rectifier esp. for motor vehicle - has DC excitation winding and three=phase windings and rectifier contains three diode paths arranged as three=phase bridge rectifier

摘要

The two diodes of each diode path (11, 16, 17) are arranged with polarity in the same direction, and lie in series respectively as a positive diode and a negative diode. Each diode path is connected between the two therein lying diodes with one of the three phase windings (15, 24, 25). The connections of the three positive diodes (26) in the three diode paths, are connected together to a positive pole (28). The corresp. connections of the negative diodes (27) are connected together to form a negative pole (8). The two diodes in a diode path are different types of diode. The same type of diode is used as a positive diode (20) or a negative diode (27). A silicon diode (12, 18, 19) is used as the first type of diode and as a second type of diode, a Schottky diode (13, 20, 21) is used. ADVANTAGE - Temp. loading of rectifier diodes reduced.