摘要
针对发电机转速随负荷变化而变化的内燃机车永磁同步发电系统,通过对永磁同步发电机的力矩控制进行发电机输出功率调节,应用最大转矩电流比控制策略来控制牵引变流器,并分析电压极限椭圆限制下的最大转矩电流比控制,确保永磁同步发电系统输出功率与负载功率相平衡。仿真分析表明,最大转矩电流比控制下的永磁同步发电系统能够较好地适应柴油机转速变化时的功率输出,并在柴油机全速范围内稳定运行,保证中间直流环节电压稳定。
Aiming at the permanent magnet synchronous generator system of diesel locomotive whose generator speed changes with load,the generator output power is adjusted through torque control of the permanent magnet synchronous generator,and the maximum torque-current ratio control strategy is applied to control the traction converter.The maximum torque-current ratio control under the voltage limit ellipse is analyzed to ensure that the output power and load power of the PMSM are balanced.Simulation analysis shows that the permanent magnet synchronous power generation system under the control of the maximum torque-current ratio can better adapt to the power output of the diesel engine when the speed of the diesel engine changes,and can run stably in the full speed range of the diesel engine to ensure the stability of the intermediate DC link voltage.
作者
冯海波
胡继胜
FENG Hai-bo;HU Ji-sheng(School of Electrical Information Engineering,Dalian Jiaotong University,Dalian 116028,China)
出处
《自动化与仪表》
2020年第6期65-68,73,共5页
Automation & Instrumentation
关键词
永磁同步电机
弱磁控制
MTPA
变速柴油发电机组
permanent magnet synchronous motor
field weakening control
MTPA
variable speed diesel generating set
