Triodyne
First Claim
1. Electrical control equipment for controlling the power supplied to a load, said equipment comprising in combination a field structure and an armature concentrically related and mounted for relative rotation one with respect to the other, said field structure including one or more sets of poles with each set consisting of a first, a second and a third pole, all of said poles being equidistantly spaced circumferentially around said field structure, a commutator connected to said armature and engaged by sets of brushes, with each set consisting of a first, a second and a third brush, corresponding respectively to said first, second and third pole, there being a set of brushes for each set of poles, said brushes being equidistantly spaced circumferentially with respect to said commutator, said first and second brushes being provided with means for establishing connection with respective terminals of a source of electrical power, said first and third brushes being provided with means for establishing connection to respective terminals of said load for furnishing electrical power thereto, there being at least one excitation winding on each of said poles, means connected to said excitation windings on said first and second poles for coupling said last mentioned windings to a source of energization for establishing first and second poles of fixed and opposite magnetic polarity, and said windings on said third poles are provided with means for changing the field current in said windings from excitation of one polarity to excitation of the opposite polarity and through all excitation levels inbetween, to change the voltage delivered to said load.
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Accused Products
Abstract
A dynamoelectric machine having a multiple of three poles and a corresponding multiple of three brushes is disclosed. Each of the poles are wound poles, two of each group of three poles being excited with a constant excitation during normal operation, the third of each group of poles being a control pole, excited so as to produce a flux that both varies in magnitude and reverses in polarity. With an input voltage connected to first and second brushes of each group of three, an output voltage may be derived from first and third brushes in a magnitude determined by the polarity and intensity of the field of the control pole. The machine is also adapted to provide mechanical output power from its rotating shaft, and also to accept input power from its rotating shaft. The output voltage obtainable may be varied between zero and the value of the input voltage, and also increased above the input voltage, and decreased below zero, reversing polarity. Means are also disclosed for providing regenerative braking of a motor driven by the output voltage of the machine and returning power to a battery power supply without increasing shaft speed of the machine, by augmenting the flux of a pole to increase the input voltage while maintaining the output voltage constant.
17 Citations
13 Claims
- 1. Electrical control equipment for controlling the power supplied to a load, said equipment comprising in combination a field structure and an armature concentrically related and mounted for relative rotation one with respect to the other, said field structure including one or more sets of poles with each set consisting of a first, a second and a third pole, all of said poles being equidistantly spaced circumferentially around said field structure, a commutator connected to said armature and engaged by sets of brushes, with each set consisting of a first, a second and a third brush, corresponding respectively to said first, second and third pole, there being a set of brushes for each set of poles, said brushes being equidistantly spaced circumferentially with respect to said commutator, said first and second brushes being provided with means for establishing connection with respective terminals of a source of electrical power, said first and third brushes being provided with means for establishing connection to respective terminals of said load for furnishing electrical power thereto, there being at least one excitation winding on each of said poles, means connected to said excitation windings on said first and second poles for coupling said last mentioned windings to a source of energization for establishing first and second poles of fixed and opposite magnetic polarity, and said windings on said third poles are provided with means for changing the field current in said windings from excitation of one polarity to excitation of the opposite polarity and through all excitation levels inbetween, to change the voltage delivered to said load.
Specification