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在托卡马克ＫＴ－５Ｃ上，我们首次采用可灵活组合的多块限制器进行了施加偏压以控制等离子体边缘电场的实验，结果表明，在本装置上限制器加正偏压优于加负偏压，正偏压改变等离子体边缘电场效果更明显。偏压限制器收集面积、纵场和偏置电压的大小对偏压效果的影响都是敏感的。改变限制器收集面积和偏压导致的边缘电场的变化最终将趋于饱和，另外发现，偏压限制器与等离子体柱的相对位置对等离子体边缘电场的影响也是重要的。
In the Tokamak KT-5C, for the first time, a flexible combination of multiple limiters was used to bias the plasma edge to control the electric field experiment. The results show that the limiter plus positive bias in this device is better than Negative bias, positive bias changes plasma edge electric field effect is more obvious. Bias limiter collection area, the magnitude of the vertical field and the bias voltage on the bias effect is sensitive. It is also found that the change of the edge electric field due to the confinement area and the bias of the limiter will eventually become saturated. In addition, it is also found that the relative position of the bias limiter and the plasma column has an important effect on the electric field at the plasma edge.