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盧徹均 慶北工業專門大學 1981 論文集 Vol.18 No.-
This paper describes static negative sequence relay for generator protection and rotor heating criteria I₂²t which define unbalanced fault capabilities of generators. This relay should have a broader range of settings and greater sensitivity to provide protection for modern large generator. An example is given of its application.
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盧澈均,金佑鉉,李武永 慶一大學校 1997 論文集 Vol.14 No.2
The dynamic characteristics of nine-switch matrix converter(NSMC), under the control strategy proposed by Venturini, is evaluated by simulations and experiments. Experiment sets are composed of the CPU part including TMS320C30, gate driver part, power supply part, A/D converter part and switch part. In this experiments, switching signal is generated in the real time by using TMS320C30. Switching frequency is increased by using 8253 counters which handle the some part of TMS320C30's calculation. In the experiment results, we can verify that the amplitude, frequency and power factor are controlled, AC-AC converter can be made up single module, and the volume of motor driving part can be reduced by excluding DC link. This experiment sets have error, which is calculation error of TMS320C30, and delay error of the counter. Furthermore researches should be focused on the minimization of these error.
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