LOW-INDUCTANCE, HIGH-EFFICIENCY INDUCTION MACHINE AND METHOD OF MAKING SAME
First Claim
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1. An electric drive system comprising:
- an induction machine;
a power converter electrically coupled to the induction machine to drive the induction machine, the power converter comprising a plurality of silicon carbide (SiC) switching devices; and
a controller electrically coupled to the power converter and programmed to transmit switching signals to the plurality of SiC switching devices at a given switching frequency such that a peak-to-peak current ripple is less than approximately five percent.
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Abstract
An electric drive system includes an induction machine and a power converter electrically coupled to the induction machine to drive the induction machine. The power converter comprising a plurality of silicon carbide (SiC) switching devices. The electric drive system further includes a controller that is electrically coupled to the power converter and that is programmed to transmit switching signals to the plurality of SiC switching devices at a given switching frequency such that a peak-to-peak current ripple is less than approximately five percent.
18 Citations
23 Claims
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1. An electric drive system comprising:
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an induction machine; a power converter electrically coupled to the induction machine to drive the induction machine, the power converter comprising a plurality of silicon carbide (SiC) switching devices; and a controller electrically coupled to the power converter and programmed to transmit switching signals to the plurality of SiC switching devices at a given switching frequency such that a peak-to-peak current ripple is less than approximately five percent. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of manufacturing an electric drive system comprising the steps of:
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providing an induction machine having a given leakage inductance; providing a silicon carbide (SiC) power converter having a plurality of SiC switching devices, wherein the SiC power converter is coupleable a power source; providing a controller, wherein the controller is programmed transmit switching signals to the plurality of SiC switching devices at a rate that minimizes a current ripple capable of being generated due to the given leakage inductance of the induction machine; and coupling the SiC power converter to the induction machine to drive the induction machine and to the controller. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A vehicle drive system comprising:
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a power converter electrically coupled to an induction motor to drive the induction motor, wherein the power converter comprises a plurality of silicon carbide (SiC) switching devices, and wherein the induction motor is designed to have a given leakage inductance; and a controller programmed to send switching signals to the plurality of SiC switching devices to cause the SiC switching devices to switch at a rate that minimizes current ripple generated due to the given leakage inductance of the induction motor. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification