摘要
文章提出了一种新型的并联NPC三电平有源滤波器,对直流提升机负载进行谐波补偿,同时在谐波负载未达到补偿装置容量上限时,兼具无功补偿功能。通过仿真研究证明了该方案的可行性和优势,并对NPC三电平有源滤波器关键技术进行了论述。提出一新型电压锁相环技术,在煤矿电网不平衡和瞬变等环境下仍能有出色的锁相能力,提高了系统稳定性。
Mine Hoist plays a vital role in the coal mine production, but generates current harmonics at same time. This paper presents a new three - level NPC parallel active filter, with the function of DC hoist load harmonic compensation, and the function of reactive power compensation, in case that the limit on harmonic load fails to meet the compensating device capacity. Feasibility and benefits of this program is proved through simulation. The paper also discusses the key technologies of NPC three - level active filter, and proposes a new voltage PLL technology, which can improve system stability, with an excellent lock capacity in the coal mine power grid transients and other environmental imbalances.
出处
《煤炭工程》
北大核心
2015年第12期107-109,113,共4页
Coal Engineering
