电流源型有源前端整流器的无传感器有源阻尼控制  

Active Damping Control Without AC Current Sensor for Active Front-End Current Source Rectifier

作　　者：刘洪亮 张亮亮 LIU Hongliang;ZHANG Liangliang(Shanghai Jiao Tong University,Shanghai 200240 China;Shanghai Merchant Ship Design and Research Institute,Shanghai 201203,China)

机构地区：[1]上海交通大学,上海200240 [2]上海船舶研究设计院,上海201203

出　　处：《船舶设计通讯》2020年第S01期86-94,共9页Journal of Ship Design

摘　　要：基于电感电流反馈的有源阻尼控制方法,分析不同反馈类型对系统稳定性的影响。在引入虚拟磁链观测和分析电流源型AFE变频器(CSR)数学模型的基础上,提出无电流传感器的有源阻尼控制技术,通过状态重构的方法,设计电网电流观测器和电容电压观测器。采用低通滤波器替代纯积分器来设计观测器,使得系统具有较强的抗干扰性能。仿真结果表明,无电流传感器有源阻尼技术的正确性能够减少传感器数量,降低系统成本,具有一定的应用价值。An active damping method using inductor current feedback control was proposed and the impact of different feedback types on system stability was analyzed.The core ideal of the virtual flux observing and the mathematical model of CSR were employed and the sensor-less control technology without grid current sensors was presented.Grid input current was fetched by the grid current observer in the case of only detecting the grid voltage and DC-link current.In the design of observer,the low-pass filter was used to replace the pure integrator to obtain strong ability of disturbances.Simulation results showed that the current sensor-less control technology could observe the grid current precisely and decrease the numbers of used sensors,reduce the system control cost,and had great application values.

关 键 词：电力推进 电流源型变换器 LC滤波器 有源前端变频器 无电流传感器控制 虚拟磁链观测 谐振抑制 

分 类 号：U661.313[交通运输工程—船舶及航道工程]