Vehicle propulsion system by individual stepping motors from continuously-running engine-driven alternator and/or pulsating battery current

Patent · Tue Jul 08 00:00:00 EDT 1980

OSTI ID:5028603

Fengler, W

A description is given of an engine-driven-alternator individual-wheel-motorized electric propulsion system for a four-wheel motor vehicle provided with a steering mechanism, said system comprising an engine-driven two-phase alternator having a two-phase alternator output, a plurality of electric stepping motors adapted to be drivingly connected one of each vehicle wheel and having motor inputs, each stepping motor having a rotor and also having a stator with a multiplicity of pole pieces arranged in first and second sets disposed in alternate sequence with the pole pieces of each set having alternate opposite windings imparting alternate opposite polarities to the stator pole pieces of each set upon energization thereof, each stator pole piece having a first winding adapted to be energized by pulses of rectified alternating current and a second winding thereon adapted to be energized by pulses of direct current, a storage battery, a pulse-responsive electric power system including a plurality of gate-controlled rectifiers having power current input means and also having power current output means, a stepping motor control circuit interposed between and connecting said alternator output to said motor inputs and including switching means connected to the gates of said gate-controlled rectifiers and responsive to the reception of positive or negatie pulses for selectively energizing said first and second windings of said stator pole pieces separately and simultaneously and thereby effecting step-by-step rotation of said rotors, variable frequency generating means electrocally connected to said pulse-responsive electric power system including said plurality of gate-controlled rectifiers, and a frequency control circuit for selectively controllin the frequency output of said variable frequency generator means.

• Assignee: IFI; ERA-06-001030; EDB-80-123593
• Patent Number(s): US 4211930
• OSTI ID: 5028603
• Resource Relation: Patent File Date: Filed date 24 Jul 1978
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
ELECTRIC MOTORS
DESIGN
ELECTRIC-POWERED VEHICLES
ALTERNATORS
AUTOMOBILES
DIRECT CURRENT
ELECTRIC BATTERIES
INTERNAL COMBUSTION ENGINES
PROPULSION
PULSATIONS
SYNCHRONIZATION
CURRENTS
ELECTRIC CURRENTS
ELECTRIC GENERATORS
ELECTROCHEMICAL CELLS
ENGINES
HEAT ENGINES
MOTORS
VEHICLES
330300* - Advanced Propulsion Systems- Electric-Powered Systems