Based on the analysis of several common DC-link crowbar schemes,damp load is selected as crowbar circuit.
基于對幾種常用直流側crowbar方案的分析比較,選擇卸荷負載作為crowbar電路,對網(wǎng)側變換器和卸荷負載的控制原理及其配合進行了詳細說明,對采用和不采用crowbar電路時變換器的跌落特性進行了仿真分析和對比。
By adding damp load at DC-side of the converter,redundant energy at DC-side during grid faults will be consumed,therefore the operating of wind turbine will not be influenced by grid voltage sags.
為增強直驅(qū)型變速恒頻風電系統(tǒng)的低電壓穿越能力,采取了變流器直流側增加卸荷負載以在故障時消耗掉直流側多余的能量,使風電機組的正常運行基本不受電壓跌落影響的應對措施。