The QSS (Quasi Steady State) model of converter which neglects the negative impedance of DC system will bring some errors when unbalanced fault occurs in AC system.
当交流系统发生三相不对称故障时，忽略直流系统负序分量的准稳态模型将给交直流混合系统的仿真带来较大的误差。
A numerical method is presented for the two dimensional quasi steady state heat transfer on high power density laser welding processes according to the keyhole model.
对高能量密度激光匙孔焊接过程的二维准稳态传热进行了计算方法的研究。
In this paper a theoretical model for passively mode-locked solid-state lasers is presented, which combines the fluctuation model with the quasi-steady-state analysis.
本文对被动锁模固体激光器提出一个把涨落模型和准稳态解析方法结合起来的理论模型。
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