power feedback meaning in English
能量反馈
Examples
- The conventional rectifiers produce harmonic problem in power system . while three - phase pwm voltage source rectifiers ( vsr ) can provide constant dc bus voltage and get low harmonic distortion of input current . it also has line power feedback capability
传统的整流装置是电网污染的主要来源，三相电压型pwm整流器具有输出电压恒定、能实现单位功率因数运行的特点，甚至可以实现电能回馈电网。 - The paper describes a cw , non - cooling , digital all - solid - stated ld pumped nd : yvo4 driver which adopts microprocessor control , stability power of laser feedback and laser output power about 10mw . the system is composed of constant current source , soft diagram , protection , pulse schematic and laser power feedback loop . by combining appropriate hardware and software , we achieved , in our driver , a variety of protection features including the ability to suppress transients and reduce noise , relay soft and hardware over - current protection and overvoltage shut - off , we have obtained a continuously adjustable laser power output with high accuracy and stability
介绍一种采用单片机控制的连续运转无制冷、数字式光反馈稳功率全固态激光器驱动电源，其输出激光功率在10mw左右，系统包括恒流源、保护电路、脉冲驱动控制、光反馈稳功率控制等部分，结合硬件及软件实现了激光二极管的可靠保护以及光功率稳定、准确输出及在稳光输出情况下，实现激光器的内外调制，并取得了一些有价值的研究成果。 - According to a real ac vf asynchronous dynomometer system , first step , the paper deducts the mathematic model of the system , and analyzes the system stability on the basis of the ? irst method ? of lyapunov stability , then draws the eigenvalues of the system under the situation of the variation of different parameters , and results in finding the changing regularity of the system stability caused by varitation of variant system parameter ; secondly , sets up a system simulation model in terms of a real power feedback ac vf asynchronous dynomometer system , and emulates different running states of the system , not only analyzes methods of adjusting parameters to improve the working performance in the field of weak flux of the system , but also proves the effectiveness of the methods via simulation ; at last , compares the simulation results of the model with the experiment results of the real system , and show the nearly correctness of simulation system , and also confirms the practical usage of the simulation system as an effectively assistant tool in the process of developing and design a real dynomometer system
首先根据实际系统工作原理推导出系统的数学模型，在系统数学模型的基础上依据李雅普诺夫稳定性判别第一法进行了系统稳定性分析，绘制了系统不同参数变化时的系统特征值变化图，从而得到系统部分参数变化对系统稳定性的影响规律，为实际系统的参数设计提供了参考；然后又以系统数学模型为基础，依据实际的电封闭交流变频异步测功机系统建立系统仿真模型，模拟不同工况下系统运行情况，分析了改善弱磁区系统性能的某些系统参数调节方法，通过仿真证明了此类方法的有效性；最后将系统模型与实际系统的实验结果进行了比较，验证了仿真系统模型的基本正确性，也肯定了这一仿真系统在实际测功机系统设计中作为辅助工具的实用性。