不對(duì)稱電壓跌落下逆變電源的多目標(biāo)控制策略
[Abstract]:When the asymmetric voltage drop occurs in the power network, it is necessary to control the fault traversing of the distributed inverter power supply to ensure that it can continue to transmit power to the power grid without withdrawing from operation. A new multi-objective control strategy for distributed inverter is proposed, which is designed to meet the needs of a variety of fault traversing. Firstly, a new unified current reference expression is proposed and deduced. The control of multiple targets can be realized by introducing the parameters KS _ 1 and KS _ 2. Then, a search path of the optimal fluctuating power amplitude is derived to realize the optimal selection of the parameters k _ s _ 1 and k _ s _ 2. By simplifying the optimal search path, another linear search path is obtained, which can approximately replace the optimized path and reduce the complexity of control. Then, according to the monotonicity of the control target in the search path, a control strategy of constant power fluctuation amplitude and adaptive current imbalance is designed. Finally, the effectiveness and flexibility of the proposed control strategy are verified by a simulation example.
【作者單位】: 北京交通大學(xué)電氣工程學(xué)院;北京京能清潔能源電力股份有限公司;北京科銳博潤(rùn)電力電子有限公司;
【基金】:北京市科技計(jì)劃課題資助項(xiàng)目(D131104002013003)
【分類號(hào)】:TM464
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