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A study on solution against core saturation instability at an HVDC converter
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| Author(s) |
B.-M. Yang; C.-K. Kim; Y.-H. Moon |
| Abstract |
The paper identifies a severe form of core saturation instability in an DC/AC interaction system. It then seeks solutions to the problem by HVDC control means. This is achieved by a proper design of the Voltage Dependant Current Order Limiter (VDCOL), the Current Regulator and Timing Pulse generator. Supplementary control loops have also been introduced to result in a satisfactory performance as compared to that obtained one with the use of uncharacteristic harmonic filte on the AC side. And another new method, which adopted as the modified PI gain is presented. By using t, a more useful interaction can be achieved and it manifests itself in stable AC and DC system operation, which is confirmed by results of simulations in PSCAD/EMTDC program. All the options has been demonstrated through recovery performance of the DC link in response to both 1-phase and 3-phase 5 cycle faults on both rectifier and inverter commutating buses. |
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| Filename: | EPE2003-PP0883 - Yang |
| Filesize: | 437 KB |
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| Type |
Members Only |
| Date |
Last modified 2003-10-21 by Unknown |
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