论文部分内容阅读
首先介绍了用于导弹发射车的车载电站系统结构及其运行的基本原理。为保证蓄电池组备用电源经三相逆变器成功并入采用柴油发电机的车载电站,并实现逆变器单位功率因数运行,需要保证三相逆变器转换出的电流与柴油发电机组输出电压保持同相位。在三相逆变器动态数学模型的基础上,设计了一种带柴油机发电机组输出电压前馈的双闭环控制系统结构,采用软件锁相环对柴油机发电机组电压进行相位锁定,用于闭环系统控制以使逆变器输出电流与柴油发电机电压一致,实现单位功率因数的电能传输。在MATLAB SIMULINK环境下建立了锁相环及系统整体的仿真模型,仿真结果表明,该锁相环能够很好的实现锁相,有效的保证逆变器单位功率因数运行,该控制策略能够保证逆变器成功并入柴油发电机车载电站。
First of all, it introduces the basic principle of vehicle power station system used in missile launch vehicle and its operation. In order to ensure that the backup power of the battery pack is successfully integrated into the on-board power plant with diesel generator through the three-phase inverter and realize the power factor operation of the inverter, it is necessary to ensure that the current converted by the three-phase inverter matches the output voltage of the diesel generator Keep in phase. Based on the dynamic mathematical model of three-phase inverter, a dual-loop closed-loop control system with output voltage feed-forward of diesel generator is designed. The software PLL is used to phase lock the voltage of diesel generator set for closed-loop system Control to make the inverter output current consistent with the diesel generator voltage to achieve the power transmission unit power factor. The phase-locked loop and system simulation model are established under MATLAB SIMULINK environment. The simulation results show that the phase-locked loop can achieve the phase lock effectively and effectively ensure the unit power factor operation of the inverter. The control strategy can ensure the inverse The converter was successfully incorporated into diesel-generator on-board power plant.