Apparatus and method for controlling an electric motor having an armature and a series-wound, series-connected field coil that can be separately controlled during regenerative braking
First Claim
1. A circuit for controlling a motor having an armature and a series-wound, series-connected field coil, comprising:
- a main switching circuit including a first switch and a first diode parallel-connected to said first switch;
an armature circuit series-connected to said main switching circuit and including a second switch and a second diode, said second switch is parallel-connected to the armature and said second diode is parallel-connected to said second switch; and
a field circuit series-connected to said main switching circuit and said armature circuit and including a third diode parallel-connected to the field coil.
6 Assignments
0 Petitions
Accused Products
Abstract
A circuit for controlling a motor having an armature and a series-wound, series-connected field coil that can be separately controlled during regenerative braking. The circuit includes a main switching circuit, an armature circuit, and a field circuit. The main switching circuit includes a first switch and a first diode parallel-connected to the first switch. The armature circuit includes a second switch parallel-connected to the armature and series-connected to the main switching circuit, and includes a second diode parallel-connected to the second switch. The field circuit includes a third diode parallel-connected to the field coil and series-connected to the armature circuit.
33 Citations
8 Claims
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1. A circuit for controlling a motor having an armature and a series-wound, series-connected field coil, comprising:
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a main switching circuit including a first switch and a first diode parallel-connected to said first switch; an armature circuit series-connected to said main switching circuit and including a second switch and a second diode, said second switch is parallel-connected to the armature and said second diode is parallel-connected to said second switch; and a field circuit series-connected to said main switching circuit and said armature circuit and including a third diode parallel-connected to the field coil. - View Dependent Claims (2, 3, 4)
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5. A method of performing regenerative braking with a motor having an armature and a series-wound, series-connected field coil, and connected to a power source having a positive terminal and a negative terminal, comprising the steps of:
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forming a first current path including the positive terminal of the power source, the field coil, and the negative terminal of the power source; disconnecting the first current path; forming a second current path including the field coil and excluding both the armature and the power source for recirculating current flowing through the field coil; forming a third current path excluding the power source and the field coil for recirculating current generated by the armature; disconnecting the third current path; and forming a fourth current path including the negative terminal of the power source, the armature, and the positive terminal of the power source, and excluding the field coil, for providing power to the power source during regenerative braking. - View Dependent Claims (6, 7, 8)
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Specification