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首页> 外文会议>International Seminar on Intelligent Technology and Its Applications >Four-leg Voltage Source Inverter for Voltage and Current Balancing of Distribution Transformer with Distributed Generations
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Four-leg Voltage Source Inverter for Voltage and Current Balancing of Distribution Transformer with Distributed Generations

机译：四臂电压源逆变器，用于分布式发电的配电变压器的电压和电流平衡

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This paper is dealing with innovative control strategy of a four-leg voltage source inverter (FLVSI) which is implemented in unbalanced condition. The proposed method is aimed to maintain the balancing of voltage and current distribution system due to unbalance capacity of DG connection and unbalanced load. These unbalance condition can affect the transformer performance which is essentially designed to supply a balanced voltage. For solving the problem, the unbalance voltage and current transformer signals are decomposed to its symmetrical components: positive, negative, and zero sequence. Each results of the decomposition are transformed into a synchronous reference frame (dq coordinate) and controlled by ANFIS controller. Based on the simulation results with Matlab/Simulink, current unbalance of transformer is decreased from 48.44% to 15.15% and voltage unbalance is decreased from 5.09% to 2.46%.
机译：本文研究了在不平衡条件下实现的四脚电压源逆变器（FLVSI）的创新控制策略。所提出的方法旨在由于DG连接的不平衡容量和不平衡负载而保持电压和电流分配系统的平衡。这些不平衡条件可能会影响变压器的性能，而变压器的性能本质上是设计用来提供平衡电压的。为了解决该问题，将不平衡电压和电流互感器信号分解为其对称分量：正序，负序和零序。分解的每个结果都转换为同步参考帧（dq坐标），并由ANFIS控制器进行控制。根据Matlab / Simulink的仿真结果，变压器的电流不平衡度从48.44％降低到15.15％，电压不平衡度从5.09％降低到2.46％。

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