| 基于电流加权平均法的LCL滤波并网逆变器控制技术 |
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| 引用本文： | 沈国桥,徐德鸿,奚淡基. 基于电流加权平均法的LCL滤波并网逆变器控制技术[J]. 电源学报, 2006, 4(3): 222-227 |
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| 作者姓名： | 沈国桥 徐德鸿 奚淡基 |
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| 作者单位： | 浙江大学电气工程学院， Email:s_gq@mail.hz.zj.cn;浙江大学电气工程学院， Email:s_gq@mail.hz.zj.cn;浙江大学电气工程学院， Email:s_gq@mail.hz.zj.cn |
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| 基金项目： | 台达环境与教育基金会电力电子科教发展基金资助项目 |
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| 摘 要： | 针对传统并网逆变器电流控制时存在的幅值和相位误差以及谐波失真问题，提出了一种基于电流加权平均法的控制技术，可获得较小的输出稳定误差和电流谐波失真。本文给出了该控制策略的理论依据和实现方法，分析比较了新方法与传统控制方法的特性差异。通过对5kVA燃料电池逆变并网发电电源的仿真和试验验证了该控制策略。
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| 关 键 词： | 电流加权平均法、并网逆变器、电流控制、燃料电池电源系统 |
| 收稿时间： | 2006-05-27 |
A Novel Control Strategy Based on Weighted-Average-Current Method for Grid-interconnected Inverter with an LCL Filter |
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| Abstract: | This paper proposes a novel control strategy based on Weighted-Average-Current method for grid-connected voltage source inverters (VSI) with an LCL-filter. The weighted average value of the currents flowing through the two inductors of the LCL-filter is used as the feedback of a current regulator to stabilize and improve the system performances. By this way, the inverter control system can easily be optimized for minimum steady-state error and current harmonic distortion. The characteristics of the inverter system with the proposed controller are investigated and compared with the traditional strategy. Simulations results are provided, and the new current control strategy has been experimentally tested on a 5kW fuel cell inverter. |
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| Keywords: | Current-Weighted-Average Grid-interconnected Inverter Current control Fuel cell Power Generation |
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