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首页> 外文会议>IEEE Industry Applications Conference >Dynamic Behavior of a 21-Level (Line-to-Line) BTB System Based on Series Connection of Sixteen Converter-Cells under a Single-Line-to-Ground Fault Condition: Experimental Verification by a 200-V, 20-kW Laboratory System
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Dynamic Behavior of a 21-Level (Line-to-Line) BTB System Based on Series Connection of Sixteen Converter-Cells under a Single-Line-to-Ground Fault Condition: Experimental Verification by a 200-V, 20-kW Laboratory System

机译：基于Sixt-Pround故障条件下的十六型转换器 - 电池串联连接的21级（直线）BTB系统的动态行为：200V，20-KW实验室系统的实验验证

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This paper deals with dynamic behavior of a 21-level (line-to-line) BTB system based on series connection of sixteen converter-cells under a single-line-to-ground (SLG) fault condition. When the SLG fault happens, an imbalance in the supply voltage brings an amount of negative-sequence current to the BTB system. The negative-sequence current should be mitigated because it would result in an increased supply current and a dc-capacitor voltage fluctuation. This paper proposes a new control method intended for reducing both negative-sequence current and dc-voltage fluctuation to acceptable levels. A laboratory system rated at 200 V and 20 kW confirms the validity of the control method. In addition, this paper addresses the issue of magnetic saturation in the 16 three-phase transformers.
机译：本文涉及基于单行到地面（SLG）故障条件下的基于Sixt Sixte 6转换器单元的21级（线到线）BTB系统的动态行为。当SLG故障发生时，电源电压的不平衡为BTB系统带来了一定量的负序电流。应减轻负序电流，因为它会导致供电电流增加和DC电容器电压波动。本文提出了一种用于将负序电流和直流电压波动降低到可接受的水平的新控制方法。额定200 V和20 kW的实验室系统证实了控制方法的有效性。此外，本文解决了16个三相变压器中的磁饱和度问题。

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