DC-link voltage stabilization for reduced dc-link capacitor inverter
DC-link voltage stabilization for reduced dc-link capacitor inverter
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DOI：
10.1109/ecce.2009.5316159
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发表时间：
2009-11
期刊：
影响因子：
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通讯作者：
Wook-Jin Lee;S. Sul
中科院分区：
文献类型：
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作者：
Wook-Jin Lee;S. Sul
减小直流电容的PMW逆变器由于缺乏储能能力，其直流电压稳定性不如传统逆变器。本文提出的基于主动阻尼的直流电压稳定算法解决了这一问题。为了实现与负载/源无关的稳定，还提出了同时估计源电压和源电流的源状态估计器。实验结果验证了所提方法的有效性。当直流电容较小的逆变器在阶跃负载变化时因直流过电压故障跳闸时，采用该方法可将逆变器直流电压波动抑制在容差范围内。
A PMW inverter with reduced dc-link capacitor has a problem that the dc-link voltage is less stable compared to the conventional inverter because of the lack of energy storage capability. The proposed dc-link voltage stabilization algorithm using active damping gives a solution to this problem. To achieve load/source independent stabilization, the source state estimator which estimates both source voltage and current is also proposed. The proposed methods are evaluated by experimental results. While the inverter with a small DC link capacitor tripped due to dc-link overvoltage fault at step load change, the fluctuation of dc-link voltage of the inverter is suppressed under the tolerance range with the proposed method at the same step load change.