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A VARIABLE SPEED DRIVE CIRCUIT TOPOLOGY FOR FEEDING A 3-PHASE INVERTER BRIDGE WITH A COMBINED CURRENT AND VOLTAGE DC LINK
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| Author(s) |
John C. Salmon |
| Abstract |
This paper describes the operation of a 3-phase drive that supplies a 3-phase inverter bridge with a combined current and voltage dc link. During steady state conditions, the dc-rail voltage is controlled at levels above the rectified supply voltage. The high switching frequencies of the inverter bridge can be used to lower the size of the dc-link capacitors and inductors. During output short-circuit fault conditions, the dc-link capacitor can be automatically disconnected and the rate of rise of fault currents can be restricted by the dc-link inductor. Protection is obtained against short circuit faults such as line-line and line to supply neutral faults. Simulation results are used to illustrate the drive operation. |
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| Filename: | Unnamed file |
| Filesize: | 3.185 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-05-17 by System |
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