电压稳定器

The construction of a simple densitometer is also briefly presented.

本文略述光密度计及电压稳定器的自制方法。

matlab sps is used to build a simulink model of single-machine infinite-bus system, and based on the simulink model, simulation on effect of pss suppressing small disturbances low frequency oscillation is carried on, and some methods of improving power system transient stability are simulated, including avr and pss, short circuit cleared rapidly, fault current limiter and single-phase auto reclose. the study unifies the simulink model to realize matlab and vb seamless integration using the activex technology, and demonstrated the matlab simulation result with the vb contact surface. this method of matlab and vb integration can make up the matlab contact surface unfriendly flaw and offers a reference for the design for cai of power system analysis course.

运用matlab电力系统仿真模块集sps构建了单机—无穷大系统simulink模型，对电力系统稳定器抑制电力系统小扰动低频振荡的效果进行了仿真；对提高电力系统大扰动功角稳定性的措施，如自动电压调节器及电力系统稳定器、快速切除故障、故障限流器、自动重合闸等手段的使用效果进行了仿真验证；并结合单机—无穷大系统的simulink模型运用activex 技术实现sps与vb的无缝集成，将sps的仿真结果用vb界面显示，较好地弥补了matlab用户界面不友善的缺陷，为《电力系统分析》课程进行cai设计提供了思路。

Based on these, the single phase converter system is studied in detail, including the selection of the main circuit scheme, the formation of Sine-wave Pulse- width Modulation signal, the design of the drive and protection circuit of IGBT, and the design of high frequency transformer. Finally, the simulation software is employed to test the effect. And the result is satisfactory.

在此基础上，本文主要对电能质量控制稳定器所需的DC/AC控制电源进行了详细研究，包括主电路方案的选择、SPWM波的生成、IGBT的驱动和保护电路、高频变压器的设计以及闭环电压控制原理，最后进行了输出电压的计算机仿真分析，结果是令人满意的。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。