项目名称: 输入串联型逆变器组合系统的关键技术研究
项目编号: No.51477076
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 电工技术
项目作者: 方天治
作者单位: 南京航空航天大学
项目金额: 95万元
中文摘要: 本项目研究具有容错性能的真正模块化的输入串联型逆变器系统及其在并网应用场合的各项关键技术,提出性能优化的分布式控制策略,保证系统功率均衡的同时实现其完全模块化;在分布式控制的基础上,研究系统的N+x冗余控制技术(热插拔技术),使各模块可在线投入、退出且不影响系统的正常工作,从而提高系统的可靠性;提出系统在极端条件下的控制方案,以使系统在各种负载情况下均能正常工作;研究系统在并网状态下其输出LCL滤波器的优化拓扑,并给出多个滤波器谐振情况下的有源阻尼方案;提出系统在并网场合下实现功率均衡且单位PF输出的控制策略。项目的研究将为输入串联型逆变器组合系统的应用打下理论和工程应用基础,其研究思路可为其他类型(AC/DC整流器、AC/AC变频器等)模块组成的组合系统的研究提供参考,本研究也是电力电子系统集成理论研究的重要组成部分,其研究成果也将大力推动分布式发电系统对可再生能源的有效利用。
中文关键词: 输入串联;逆变器;模块化;并网;控制策略
英文摘要: This project focuses on the redundant modular input-series system and its control strategy in grid. The research of this project covers following aspects. Firstly, the really modular distributed system and corresponding control method are put forward. Secondly, the N+x redundant technique is studied to realize seamless hot swap without affecting the normal working of the system and consequently the reliability is improved. Thirdly, the control strategies under extreme conditions are raised to acquire regular working of the system. Then, the optimized topology of LCL filter and corresponding active damping method are proposed. Finally, the way for power balance and simultaneous good current quality is raised. The research of this project will provide the theoretical and engineering foundations for input-series inverters system, and its train of thought could offer the reference for other Series-parallel power conversion systems. Moreover, the achievement could greatly promote the effective utilization of renewable energy with distributed generation system.
英文关键词: input-series;inverter;modular;grid-connected;control strategy