采煤机变频牵引回馈制动的控制策略  

Research on feedback braking control strategy of frequency conversion traction for shearer under unbalanced grid conditions

作　　者：邓孝祥 王安华 刘宏洋 

机构地区：[1]黑龙江科技大学电气与控制工程学院,哈尔滨150022

出　　处：《黑龙江科技大学学报》2017年第3期211-214,共4页Journal of Heilongjiang University of Science And Technology

基　　金：中国煤炭工业协会指导性计划项目(MTKJ2016-367);哈尔滨市应用技术研究与开发项目(RC2016XK008001)

摘　　要：采煤机四象限变频牵引工作于并网回馈状态时,易出现失控现象。通过建立变流器动态向量模型,确定一种新型电能缓冲变流器拓扑,研制40 k W/380 V变频牵引系统样机,搭建了四象限变频机组拖动平台,通过仿真分析及实物波形验证其可行性。结果表明:该研究有效抑制变频牵引系统并网制动失控。该研究为变频器实际应用设计提供有力的理论依据。This paper is a response to an out-of-control phenomenon,as occurs when the four quadrant inverter traction system of coal mining machine works in the grid connected state. The study works towards developing the dynamic vector model of converter; producing a new type of energy buffer converter topology; and developing the prototype of 40 k W/380 V frequency conversion traction system and the four quadrant frequency conversion unit drag the platform; and validating the feasibility using simulation and measured waveforms. The results demonstrate that the research contributes to an effective restraint on an out-of-control phenomenon in the grid braking of variable frequency traction system and may provide a theoretical basis for the practical design of frequency converters.

关 键 词：采煤机 动态相量解耦 电能平滑疏导 电流冲击 

分 类 号：TD632.1[矿业工程—矿山机电]