Abstract：In the microturbine power system, decoupling control strategy of three-phase four-leg inverter is proposed based on the internal impedance transformation. The inverter and its output filter are regarded as an integrated inverter power supply to modeling and control as a whole unit. After equivalent transformation, the impedance of zero-leg is transformed into zero and the others are reduced to a lower equivalent impedance value. The three-phase four-leg inverter is decoupled into three independent single-phase inverters. In this scheme, an amplitude-phase multi-loop system is applied. Advantages of the four-leg inverter structure are exerted particularly for unbalanced and non- linear load. The simulation and experiment results show that the control method is correct and effective.
闫士杰, 王旭, 陈宏志. 发电用微型燃气轮机三相四桥臂逆变器解耦控制[J]. 电工技术学报, 2012, 27(1): 69-73.
Yan Shijie, Wang Xu, Chen Hongzhi. Decoupling Control of Three-Phase Four-Leg Inverter in Micro-Turbine Power Generation. Transactions of China Electrotechnical Society, 2012, 27(1): 69-73.
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2012, Vol. 27 
