【作者】 叶兰兰；

【导师】 黄彦全；

【作者基本信息】 西南交通大学 ， 轨道交通电气化与自动化， 2013， 硕士

【摘要】 城市轨道交通作为一种运量大、速度快、空间利用合理、污染少、舒适性好的交通工具,有效缓解大中型城市乘车难、环境污染及交通拥堵等问题,近年来我国也开始大力发展城市轻轨和地铁,本文主要以地铁为研究对象。城市轨道交通站间距离短、运行密度高,机车频繁制动时产生相当可观的再生能量,将产生的能量得以利用,不仅节约能源、保护环境同时降低电压利于机车安全运行。再生制动产生的能量得以利用是本文研究的重点,提出逆变-电阻混合型再生制动能量吸收方案。本课题以建立地铁再生制动及能量吸收仿真平台为目的,利用仿真软件建立机车运行制动模型、能量逆变并网模型及混合型能量吸收模型。首先,分析和总结几种城市轨道交通车辆制动方案的优缺点,重点研究馈能型再生制动方案的基本原理及主要技术问题,提出逆变-电阻混合型再生制动能量吸收方案。其次,基于24脉波整流器的理论,建立仿真模型和设计合理变压器参数。基于地铁机车运行原理,完成交流机车供电主体方案,建立旋转坐标变换、异步电机的数学模型和转子磁链方程,确立SVPWM矢量控制为牵引电机的控制策略,运用MATLAB/Simulink搭建主电路和控制回路,对机车牵引和制动工况进行仿真分析。然后,根据地铁能量吸收的逆变并网的基本原理,完成逆变并网系统的主电路设计,使其回馈至地铁站用电380V动照系统。逆变并网主电路采用PWM型逆变器,输出侧接LCL有源阻尼滤波器,控制系统回路采用经典双环内电流外电压的PI控制,设计PI参数及LCL滤波器参数,建立PLL锁相环仿真模型。最后,基于电阻制动原理,结合逆变并网一电阻制动方案进行建模、仿真分析,并对再生制动产生功率及电流进行粗略的计算。更多还原

【Abstract】 As a large capacity, fast speed, less pollution and comfortable transportation, urban rail transit effectively alleviate the transportation pressure of the large and medium-sized city, environmental pollution and traffic congestion. In recent years, China began to develop the light rait transit and subway。The subway stations has shorter distance and locomotive has high density running. During locomotive frequently braking, it produced considerable regeneration energy. Reasonable utilization of the regeneration energy not only save energy, protect environment but also reduce the voltage grade for the locomotive’s safety operation. This paper is the focus on utilization of the regeneration energy, and The inverter-resistance hybrid method is proposed. This topic is purposed to build Metro regenerative braking and energy absorption simulation platform, and establish the locomotive braking model and inverter-resistance hybrid energy absorption model by simulation software.Firstly, the urban rail transit power supply system has been introduced. Several vehicle braking scheme has been summarized and analyzed for their advantages and disadvantages. The inverter-resistance hybrid of regenerative braking energy absorption solution has been purposed.Secondly, based on the theory of24pulses rectifier, simulation model was built and the parameters of the transformer was reasonable designed. Based on the principle of subway locomotive operation, AC locomotive power supply scheme was established. SVPWM was designed as the control strategy of traction motor. The main circuit and control circuit was built by MATLAB/Simulink for analyzing the locomotive traction and braking process.Then, according to the basic principle of inverter and grid-connected, the main circuit was designed and the energy feedback to380V power system. The classical PI double-loop control was established for control system. The parameters of LCL filter and PI were designed and PLL simulation model was built.Finally, combined with inverter and resistance braking scheme, the model was built analyze and the power and current of regenerative braking was computed.更多还原