A synchronous acquisition and analysis system of gastric electrogram and gastric impedance signal 胃电和胃阻抗信号的同步采集与分析系统
Is paper propose a new automatic regulation theory of fast excitation during synchronous generator's spinning up, variable frequency and variable impedance. 提出一种新的关于同步发电机在起动后加速过程中实现快速励磁的自动控制理论,即变频变阻抗理论。
The experiments show that the synchronous inversion of depth parameter and wave impedance of formation can give us the satisfactory result the asynchronous inver-sion fails to offer. 试验结果表明,对地层深度参数和地层波阻抗进行同步反演,可以取得异步法反演所收不到的效果。
Improved out-of-step protection for synchronous generator based on the three-impedance element principle 同步发电机三阻抗元件失步保护原理的改进
Based on the relative theories about electric circuit and synchronous generators 'post-fault transient, a practical method making use of node impedance matrix is proposed to calculate the instantaneous currents of a faulty power system. 本文基于电路理论和发电机的短路过渡过程理论,利用节点阻抗阵推导出电力系统短路时短路电流瞬时值实用计算方法。
On the basis of the mathematical model of a synchronous generator with passive impedance load, this paper deals with the influence of parameters of a SCR self-excited excitation system upon its stability. 本文在建立带无源阻杭负载的同步发电机数学模型的基础上,研究了可控硅自励励磁系统参数对发电机稳定性的影响。