The present invention provides an electrical power supply system for an automotive vehicle with high reliability and small size in which an adequate power is supplied to both a high power load like a blower motor and a conventional load like a battery by using a conventional alternator.The power supply system for the automotive vehicle comprises: an alternator with an armature winding and a field coil, a stepping-up DC/DC converter for applying a stepped up voltage of a battery to the field coil...

A dual voltage supply circuit for vehicles is disclosed, in particular for vehicles with a dual circuit electrical braking system. The circuit contains a starter battery and an auxiliary battery, each supplying an electrical braking circuit. The two batteries are charged from a three phase generator which has power diodes and excitation diodes. The auxiliary battery is charged via an electrical path from the excitation diodes. A monitoring module, which includes a charge monitoring system and a ...

An electric charging control unit is used to control charging of a dual voltage battery of an automobile electrical system. The charging control unit is used in conjunction with a standard 12 volt alternator or 12 volt charger to efficiently recharge a lead acid battery having both 12 and 16 voltage terminals. The electric charging control unit continually monitors the different voltage levels of the battery. Charging of higher voltage cells by a DC to DC converter is selectively activated when ...

In an electric power supply system including an alternator generating a low-voltage for energizing a battery and a low-voltage load and a high-voltage for energizing a high-voltage load such as a heater for a catalytic converter. Switching elements are disposed in an alternator housing to supply a low-voltage load and a high-voltage load selectively. The switching elements compose a part of rectifying unit for supplying DC output power to the high-voltage or low-voltage load.

A method and apparatus for controlling AC power from the stator of an alternator in which groups of windings have various numbers of turns and various numbers of poles per winding can be connected in series to achieve optimum power generation at one RPM and in parallel to achieve optimum power generation at another RPM.

In the case of the multiphase switching system (1), each (for example L.sub.3) of the phase conductors is arranged in the course of a generator output line (2), which is arranged between a generator (7) and a network transformer (8), together with a switching apparatus, in encapsulation (5) which is insulated by air gaps, in a manner isolated from the other phase conductors. The switching system is intended to allow virtually all the switching, protection, and measurement functions occurring in ...

In one embodiment of the present invention, an electrical generating system for a motor vehicle includes a first alternator and a second alternator. The first alternator includes a first plurality of electrical power output windings, a first field winding in electromagnetic communication with the first plurality of electrical power output windings and a voltage regulator. The voltage regulator further includes an electrical driver coupled to the first field winding to control a current through t...

A charging generator for a vehicle comprises a three-phase a.c. generator in which first and second armature windings are provided so that the waveforms of the a.c. voltages produced in the first and second windings have a phase difference of 30.degree. in electrical angle, each of the output voltages are rectified in each rectifier, and the output side of the rectifiers are connected in parallel so that the output voltages are composed, whereby the height of ripple of the produced d.c. voltage ...

The voltage supply device for the motor vehicle electrical system includes e.g. a self- or separately-excited generator having stator windings (10,11,12) and an excitation coil (E); a main bridge rectifier device connected to the stator windings having a first connector (B+) at which a first voltage (UB+) is delivered; an exciter bridge rectifier device connected to the stator windings; an exciter voltage regulator device connected between the exciter bridge rectifier device and the excitation c...

An electric generating set adapted for supplying current to an intermittently current consuming device such as an arc welder device. The set comprises an internal combustion motor, a speed governor to govern said motor at a given service speed, a generator driven by the motor and having a power output, and output sensing and actuator devices influencing said speed governor and set the motor at a lower idle speed when no current is withdrawn from the generator.