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.
[1] Yan Shijie, Bian Chunyuan, Wang Zhiqian. Microturbine control based on fuzzy neural network[C]. Proceedings of the ISICT’2006, Beijing, 2006: 909-914. [2] 张方华, 丁勇, 王慧贞, 等. 四桥臂三相逆变器的特定谐波消除控制[J]. 中国电机工程学报, 2007, 27(7): 82-87. Zhang Fanghua, Ding Yong, Wang Huizhen, et al. The SHE control strategy on three-phase four-leg inverter[J]. Proceedings of the CSEE, 2007, 27(7): 82-87. [3] 官二勇, 宋平岗, 叶满园. 基于三次谐波注入法的三相四桥臂逆变电源[J]. 电工技术学报, 2005, 20(12): 43-46. Guan Eryong, Song Pinggang, Ye Manyuan. Three-phase inverter with four bridge legs based on three harmonic injection method[J]. Transactions of China Electrotechnical Society, 2005, 20(12): 43-46. [4] Zhang R, Himamshu Prasad V, Boroyevich Dushan, et al. Three-dimensional space vector modulation for four-leg voltage-source converters[J]. IEEE Transactions on Power Electronics, 2002, 17(3): 314-326. [5] Perales M A, Prats M M, Portillo R, et al. Three dimensional space vector modulation for four-leg inverters using natural coordinates[C]. Proceedings of the IEEE International Symposium on Industrial Electronics, 2004, 2: 1129-1134. [6] Michael J Ryan, Rik W De Doncker, Robert D Lorenz. Decoupled control of a four-leg inverter via a new 4×4 transformation matrix[J]. IEEE Transactions on Power Electronics, 2001, 16(5): 694-701. [7] 孙驰, 毕增军, 魏光辉. 一种新颖的三相四桥臂逆变器解耦控制的建模与仿真[J]. 中国电机工程学报, 2004, 24(1): 124-130. Sun Chi, Bi Zengjun, Wei Guanghui. Modeling and simulation of a three-phase four-leg invereter based on a novel decoupled control technique[J]. Proceedings of the CSEE, 2004, 24(1): 124-130. [8] Hou Zhenyi, Sun Jin. Study on control strategy for three-phase four-leg inverter power supply[C]. Proceeding of the 30th Annual IEEE IECON, Busen, 2004, 1: 805-809. [9] Olorunfemi Ojo, Parag M Kshirsagar. Concise modulation strategies for four-leg voltage source inverters[J]. IEEE Transactions on Power Electronics, 2004, 19(1): 46-53. [10] 张纯江, 顾和荣, 王宝诚, 等. 基于新型相位幅值控制的三相PWM整流器数学模型[J]. 中国电机工程学报, 2003, 23(7): 28-31. Zhang Chunjiang, Gu Herong, Wang Baocheng, et al. Mathematical model of three-phase PWM rectifier based on a novel phase and amplitude control[J]. Proceedings of the CSEE, 2003, 23(7): 28-31. [11] 陈宏志, 刘秀翀, 钱晓龙, 等. 一种高性能单相正弦逆变电源的多环控制策略[J]. 东北大学学报, 2007, 28(12): 1685-1688. Chen Hongzhi, Liu Xiuchong, Qian Xiaolong, et al. A multiloop feedback control strategy for high performance single phase power supply through sinusoidal inverter[J]. Journal of Northeastern University, 2007, 28(12): 1685-1688.