A Low Cost Flyback CCM Inverter for AC Module Application
A Low Cost Flyback CCM Inverter for AC Module Application
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DOI：
10.1109/tpel.2011.2164941
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发表时间：
2012-03-01
影响因子：
6.7
通讯作者：
Oruganti, Ramesh
中科院分区：
文献类型：
--
作者：
Li, Yanlin;Oruganti, Ramesh
展开型反激式逆变器工作在不连续导通模式（DCM）下，是光伏（PV）组件应用中的一种低成本解决方案。本文旨在通过使用基于连续导电模式（CCM）的方案来提高效率。设计问题，无论是电源方案和控制方案，确定和权衡调查。提出了一种基于一次电流反馈控制的二次电流开环控制方法，克服了二次电流传递函数中占空比右半平面零点移动带来的困难。结果表明，在加州的效率相比，基准DCM计划的200 W的光伏组件应用程序的8%的改善。在额定功率水平下的输出功率质量能够满足IEC 61727要求。在选定的工作条件下，反激逆变器在CCM中的稳定性已被验证。
The unfolding-type flyback inverter operating in discontinuous conduction mode (DCM) is popular as a low-cost solution for a photovoltaic (PV) acmodule application. This paper aims to improve the efficiency by using a scheme based on continuous conduction mode (CCM) for this application. Design issues, both for the power scheme and the control scheme, are identified and trade-offs investigated. An open-loop control of the secondary current, based on feedback control of the primary current, is proposed in order to bypass the difficulties posed by the moving right half plane zero in the duty cycle to secondary current transfer function. The results presented show an improvement of 8% in California efficiency compared to the benchmark DCM scheme for a 200-W PV module application. The output power quality at rated power level is capable of meeting IEC61727 requirements. The stability of the flyback inverter in CCM has been verified at selected working conditions.