【作者】 马志文；

【导师】 郑琼林；

【作者基本信息】 北京交通大学 ， 电力系统及其自动化， 2007， 博士

【摘要】 交流传动技术以其经济和技术优越性，已经成为我国铁路和城市轨道交通车辆的发展方向。大功率交流传动系统的研究、开发和生产，需要有功率相当的交流传动试验台为其提供良好的试验场所。为此，本文对一种“双逆变器—电机”能量互馈型交流传动试验系统(也称交流传动互馈试验系统)进行了深入的研究。本文详细阐述了交流传动互馈试验系统的工作原理和节能原理，提出了基于矢量控制的互馈双电机联合控制策略，并给出了互馈双电机系统的小信号线性状态方程，为系统的稳定性分析及参数选择提供了重要参考。仿真和试验研究表明：采用基于矢量控制联合控制策略的双逆变器—电机互馈系统具有良好的稳态性能和动态调节转速、负载转矩的能力，能够模拟机车牵引、制动等工况试验，节能效果明显。本文对矢量控制系统的电压解耦问题和不同的电压解耦算法进行了深入研究，并针对大功率电压解耦型矢量控制系统的特点，引入滑模变结构控制理论，提出了一种复合型滑模变结构电流控制器。理论分析和仿真结果表明该电流控制器既有前馈解耦动态响应快、解耦效果好的优点，又有滑模变结构控制强鲁棒性、对扰动的响应和调整速度快的优点。本文在系统的直流电源侧采用了两重化串联四象限变流器，提出了基于移相式SVPWM的预测电流控制方案。仿真和试验结果表明该四象限变流器具有输出直流电压稳定、电网侧功率因数高和能量双向流动等优点，能够满足试验系统的DC1500V直流供电要求。本文深入研究了空间矢量脉宽调制(SVPWM)技术的过调制问题，提出了一种具有全调制范围的新型SVPWM算法，实现了线性调制算法和过调制算法的统一。仿真和试验结果表明该算法结构简单，实用性强，只用一种算法就实现了线性调制区、过调制区直至方波工况的平滑过渡。本文研制了一套基于双DSP控制板、智能型IGBT驱动板等的变流器控制系统，在四象限变流器和逆变器中均得到成功应用。更多还原

【Abstract】 AC drive technology has been the evolution direction of railway locomotives and urban rail transit cars in China because of its economical and technical superiorities. AC drive test rigs with equivalent power are needed to provide good test site for the research, development and production of high power AC drive systems. So this dissertation makes some researches on a twin inverter-motor reciprocal power-fed AC drive test system.This dissertation expatiates on the work principle and energy conserving principle of the reciprocal power-fed test system, proposes the associated control strategy of twin motors based on vector control, and gives the small signal linear model of twin motors, which is the important reference of stability analysis and parameter selection. Simulation and test results show that twin inverter-motors reciprocal power-fed system using the above control strategy has good steady-state performance, good features of speed and load torque adjustment, the availability of emulating traction and braking condition tests of locomotives, and obvious energy saving effect.The voltage decoupling problem and the different voltage decoupling algorithms of vector control system are thoroughly analyzed, and by introducing the theory of sliding-mode variable structure control, a combined-type sliding-mode variable structure current controller is proposed for high-power voltage-decoupling vector control system. Mathematical anlysis and simulation results show that this current controller has not only the advantages of feedforward decoupling such as fast response and perfect decoupling, but also the advantages of siding mode control such as robustness and good anti-disturbance.This dissertation adopts double series system of four-quadrant converter at the DC source side of test system, and proposes predicted current control scheme based on phase-shifted SVPWM. Simulation and test results show that this four-quadrant converter has several advantages such as steady DC output voltage, high power factor and bidirectional power flow, and meets DC1500V power supply for the test system.The over-modulation problem of space vector pulse-width modulation (SVPWM) is thoroughly studied, and a new SVPWM algorithm with entire modulation range is proposed to unify the algorithms of linear modulation and over-modulation. Simulation and test results show that this new algorithm has simple structure and good practicability, and uses only one kind of algorithm to realize the smooth transient fromlinear modulation range, overmodulation range, to square waveform condition.This dissertation develops a converter control system including dual-DSP controlboard, intelligent IGBT driver board, etc., which achieves successful applications inboth four-quadrant converter and inverter.更多还原