文档介绍：南京航空航天大学
硕士学位论文
模拟同步发电机特性的逆变器并联技术研究
姓名:杨伟
申请学位级别:硕士
专业:电力电子与电力传动
指导教师:邢岩
2011-01
南京航空航天大学硕士学位论文
摘要
近年来我国铁路运输蓬勃发展,机车用电设备种类和数量显著增加,对机车电源的供电容
量和供电的安全稳定性提出了更高的要求,机车供电电源并联运行成为机车电源的发展趋势之
一。但机车辅助逆变电源的功率较大、输入端直流电压比较高、动态变换比较频繁、输出端电
压波形质量要求较高,且辅助逆变电源布局分散,工作环境电磁干扰较大。因此,针对机车电
源的工作特点,研究了适合机车辅助电源并联运行控制方法。
本文研究了同步发电机的输出有功功率与输出电压频率之间的关系,分析逆变器无互联线
下垂控制与同步发电机自调频特性的相似性。建立了三相逆变器数学建模,给出了基于旋转坐
标变换下的电压电流双闭环控制参数的设计,使得系统性能得到提升。研究了三相逆变器的功
率计算方法,大大提高了功率计算的准确性和实时性。并给出了功率调节参数的计算方法,分
析了并机电感的对并联性能的影响。在Matlab/Simulink软件环境下对并联系统进行了建模仿真。
分析了三相逆变器无互联线并联的关键影响因素,功率计算环节的准确和及时性、单机控制系
统的性能、功率调节参数的设计对并联的实现都至关重要。在理论分析的基础上,制作了两台
并联运行的三相逆变器样机,介绍了软硬件的设计,并在实验平台上进行实验,实验均流效果
较好,验证了无互连线并联控制策略在大功率下的应用的可行性和正确性。

关键词:逆变器,机车辅助电源,并联,下垂控制,三相
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模拟同步发电机特性的逆变器并联技术的研究
Abstract
Along with the rapid development of China railway transport, otive electrical equipment
type and quantity increased significantly, otive power supply puts forward higher request for
capacity and stability. The parallel operation e one of the development trend of otive
power. otive power has the characters of high power, wide range of high DC input voltage,
higher requirements of the output voltage waveform quality and the auxiliary inverter scattered layout,
working with environment ic noise. Aiming at the otive of the power supply
characteristics, This paper studied the control method of the parallel otive auxiliary power
supply.
In this paper, the relationship of synchronous generator between output active power and the
output voltage frequencies is analyzed. The similarity between the inverter drop control and the
characteristic of synchronization generator is analyzed .The mathematical modeling of three-phase
inverter is established .This paper analyzes and Design of a voltage and current double closed-loop
controlled Three Phase Inverter which is based on Rotating coordinate transformation . The power
calculation for three-phase inverter is researched, this calculation is accur