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A MV AC Drive with Active Front End and Improved Performance
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| Author(s) |
N. Zargari; M. Pande; J. Wiseman; S. Rizzo |
| Abstract |
A new Curent Source Inverter (CSI)-based Medium Voltage ac drive with Active Front
End (AFE), sensorless vector control and Symmetric Gate Commutated Thyristors (SGCTs) is
presented. The paper emphasizes a PWM rectifier front end since this configuration can meet the
IEEE-519 requirements without the need for an isolation or multi winding transformer. The proposed
drive operates the SGCTs with minimal snubbers and at a higher switching frequency than GTOs.
This results in a reduction in the size of the filter components and improved performance
characteristics while maintaining minimum component count. The paper describes the direct
sensorless vector control adapted for Current Source inverters and focuses on the implementation and
application issues of the PWM rectifier and the control strategy. Two 4160V drives (600hp and
1250hp) are tested and the steady state and dynamic response to load/speed changes is presented and
discussed. |
| Download |
| Filename: | EPE2001 - PP00380 - Zargari.pdf |
| Filesize: | 116.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-11 by System |
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