Operation of switched reluctance drive systems from dual voltage sources
First Claim
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1. A switched reluctance drive comprising:
- a rotor, a stator having a winding, and a controller having means for selectively connecting either of a first and a second voltage source to supply the winding, and an energy return path between the winding and the second voltage source to allow energy to be transferred from the winding to the second voltage source when the first voltage source is used to supply the winding, thereby to charge the second voltage source.
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Abstract
A switched reluctance drive is supplied from a first voltage source (V1) during an idle period, in which it transfers energy to a second voltage source (V2). The machine is subsequently run at high power from the second source (V2), so that the first source (V1) does not have to supply the current required when the machine is operating at high power. The drive is able to regulate the amount of energy transferred to the second source (V2).
25 Citations
24 Claims
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1. A switched reluctance drive comprising:
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a rotor, a stator having a winding, and a controller having means for selectively connecting either of a first and a second voltage source to supply the winding, and an energy return path between the winding and the second voltage source to allow energy to be transferred from the winding to the second voltage source when the first voltage source is used to supply the winding, thereby to charge the second voltage source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of operating a switched reluctance drive comprising a rotor and a stator having a winding, the method comprising:
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connecting a first voltage source to the drive so as to supply the winding;
switching the first voltage source on and off across the winding;
transferring energy from the winding to a second voltage source when the first voltage source is switched off, thereby to charge the second voltage source, and selectively connecting the second voltage source so as to supply the winding. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification