【作者】 章佳；

【导师】 孙孝瑞；

【作者基本信息】 华北电力大学（北京） ， 电力系统及其自动化， 2004， 硕士

【摘要】 目前对有源电力滤波器(APF)研究有两个方面，一是研究APF对系统的影响，即APF的补偿性能问题，二是研究系统对APF的影响，即APF的安全可靠性问题。本文采用锁相技术，以获得畸变电流中基波电流的相位，进一步提高了畸变电流的检测精度，并据此原理考虑锁定补偿电流的相位，使补偿电流与系统电流相位同步，保证APF安全可靠运行。此外，本文对IGBT的驱动保护电路进行了完善，调整了过流保护临界动作值，改善了IGBT的关栅波形，进一步提高了其工作可靠性，并进行了整体调试。为了使有源电力滤波器的工作更加安全，本文还分析了采用敏感元器件一压敏电阻和热敏电阻用于APF保护的可行性。更多还原

【Abstract】 Currently the researches for Active Power Filter (APF) have two purposes: One which studies the influence of APF on system, and the other which studies the system influence on APF, that is, the security and reliability of APF. In this thesis, Phase-Locked Loop(PLL) technogies are used to acquire phase of fundamental current in bais current, which enhances the detecting precision of bais current. And we want the phase of bais current and the phase of system current is the same,so this thesis think of locking the phase of bais current which based on this theory to sure the security and the reliability of APF. And, the drive protection circuit is improved in this thesis, hence the working reliability of which is also enhanced. What’s more, this thesis analyzes the feasibility of introducing varistors and thermistors into the APF protection, in order to acquire more secure working with active power filter.更多还原