可用于分布式电源并网的双频逆变器研究
Study on Distributed Power Grid-Connected Dual Frequency Inverter

作者: 安树怀 , 孙裕佳 , 徐 茜 , 丁 军 , 王宏磊 , 郭英雷 :国网山东省电力公司青岛供电公司,山东 青岛;

关键词: 分布式电源并网双频逆变器总谐波畸变率电流滞环控制Distributed Power Grid-Connected Dual-Frequency Inverter Total Harmonic Distortion Rate Current Hysteresis Control

摘要:
为提高分布式电源并网的效率,减小并网电流总的谐波畸变率,降低并网逆变器的开关损耗,研究了一种新型双频并网逆变器,其中一部分工作在低频,采用电流滞环控制,快速跟踪高频单元电流,传递大部分功率;另一部分工作在高频,采用空间矢量调制,改善并网电流的动态性能,使并网电流和电网电压同频同相,并且实现了电流有功分量和无功分量的解耦控制。以双频逆变器A相工作的四种状态为例分析了系统的工作原理。Simulink仿真模型验证了双频并网逆变器能够大大降低开关损耗,使并网电流总的谐波畸变率减小,提高了并网效率。

Abstract: A new type topology of dual-frequency photovoltaic grid-connected inverter is researched to improve the efficiency of distributed power grid-connected and reduce the total harmonic distortion rate of the gird-connected current and the switching losses. Part of it works in the low-frequency area to fast-track high-frequency cell current and transit most of the power by using current hysteresis control. The other part works in the high frequency area to improve the dynamic performance of the distributed power grid connected current and make grid-connected current in the same phase and frequency with grid voltage. The voltage and currents changes are analyzed in four work states of phase A. The Simulink model verifies the switching losses and the harmonic distortion rate is greatly reduced; thus grid-connected efficiency is improved.

文章引用: 安树怀 , 孙裕佳 , 徐 茜 , 丁 军 , 王宏磊 , 郭英雷 (2016) 可用于分布式电源并网的双频逆变器研究。 电力与能源进展, 4, 184-193. doi: 10.12677/AEPE.2016.45024

参考文献

[1] Ahn, J.Y., Park, J.H., Cho, B.H., et al. (2006) Dual Module Based Maximum Power Point Tracking Control of Photovoltaic Systems. IEEE Transactions on Industrial Electronics, 53, 1036-1047.
http://dx.doi.org/10.1109/TIE.2006.878330

[2] Blaabjerg, F., Chen, Z. and Kjaer, S.B. (2004) Power Electronics as Efficient Interface in Dispersed Power Generation Systems. IEEE Transactions on Power Electronics, 19, 1184-1194.
http://dx.doi.org/10.1109/TPEL.2004.833453

[3] Yan, H.M., Zhou, Z.Z. and Lu, H.Y. (2009) Photovoltaic Industry and Market Investigation. 1st Conference on Sustainable Power Generation and Supply, Nanjing, 1-4.

[4] Prasad, B.S., Jain, S. and Agarwa, V. (2008) Universal Single-Stage Grid-Connected Inverter. IEEE Transactions on Energy Conversion, 23, 128-137.
http://dx.doi.org/10.1109/TEC.2007.905066

[5] 董密, 罗安. 光伏并网发电系统中逆变器的设计与控制方法[J]. 电力系统自动化, 2006, 30(20): 97-102.

[6] 李杰, 宋文祥, 马祎炜, 等. 三相PWM并网逆变器在幅相控制下的启动性能改善[J]. 电工技术学报, 2009, 24(4): 152-156.

[7] 张超, 何湘宁. 一种用于光伏发电系统的新型高频逆变器[J]. 电力系统自动化, 2005, 29(19): 51-53.

[8] 吴春华, 崔开涌, 陈国呈, 等. 一种电流型并网逆变器的拓扑和控制方法[J]. 电工技术学报, 2007, 22(8): 7-12.

[9] 周雒维, 杜雄, 付志红, 等. 双频Buck变换器[J]. 中国电机工程学报, 2006, 26(6): 68-72.

[10] 杜雄, 周雒维, 侯世英, 等. 双频三相功率因数校正[J]. 中国电机工程学报, 2006, 26(11): 109-114.

[11] 王明渝, 向涛峰, 李玉军. 基于MATLAB/SIMULINK的双频逆变器的仿真[J]. 电力系统及其自动化学报, 2008, 20(1): 105-109.

[12] Amin, M.M.N. and Mo-hammed, O.A. (2010) Vector Oriented Control of Voltage Source PWM Inverter as a Dynamic VAR Compensator for Wind Energy Conversion System Connected to Utility Grid. Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), Palm Springs, 21-25 February 2010, 1640-1650.
http://dx.doi.org/10.1109/apec.2010.5433452

分享
Top