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US 4,543,505 AGranted
Electric torque converter
AssigneeFAG Kugelfischer Georg Schafer Kommanditgesellschaft auf Aktien
InventorsAdam Dittner, Georg Hartmann
Life of this patent
Estimating the term…
Abstract
An electric torque converter arranged between a driving and a driven system onsists of an alternating current generator G which is connected to a dc motor M via a plurality of circuits C, D, Ko, which operate in parallel to each other.
Claims9
An electric torque converter, comprising:
- an alternating voltage generator having a group of triangularly wound output windings and means for magnetically exciting said windings, the orientation of the windings with respect to the poles of the generator producing approximately triangularly shaped voltage waveforms at an output of each winding;
- a dc motor having a group of windings and commutating means for coupling said group of windings of said dc motor to positive and negative terminals of said dc motor;
- and
- electrical rectifier and current limiting means interposed between said terminals of said dc motor and said windings of said generator for converting said triangularly shaped waveforms to a rectified output supplied to said terminals of said dc motor and for limiting the current drawn by said generator to below a predetermined value when the back EMF of said dc motor is at or near zero volts.
1 more element
An electric torque converter, comprising:
- an alternating voltage generator having a plurality of winding groups and means for magnetically exciting said winding groups, each group including triangularly wound output windings, the orientation of the windings with respect to the poles of the generator producing approximately triangularly shaped voltage waveforms at an output of each winding;
- a dc motor having a plurality of winding groups equal in number to the number of said groups in said generator, a plurality of commutating means and pairs of positive and negative terminals, each commutating means coupling one of said winding groups of said dc motor to a respective pair of said pairs of terminals;
- and
- a plurality of electrical rectifier and current limiting means equal in number to the number of said winding groups in said generator, each electrical rectifier and current limiting means being interposed between said associated with one pair of said terminals and one winding group of said generator, each electrical rectifier and current limiting means adapted for converting said triangularly shaped waveforms from its associated generator winding group to a rectified output supplied to said associated pair of terminals of said dc motor and for limiting the current drawn by said associated generator winding group to below a predetermined value when the back EMF of said associated dc motor winding group is at or near zero volts.
1 more element
The electric torque converter as in claim 10 or 3, wherein each winding group of said generator and said dc motor is Y-connected and comprises a neutral electrode, all the neutral electrodes being connected to one another.
Dependencies are inferred from the claim text.