电工技术学报2017，Vol.32Issue(21)：34-43,10.DOI:10.19595/j.cnki.1000-6753.tces.L70439
MTPA控制下逆变器-IPMSM系统直流侧电压稳定性研究
DC Voltage Stability Studies with IPMSM System under the Control of MTPA
钟志宏 1方晓春 1林飞 1杨中平1
作者信息
- 1. 北京交通大学电气工程学院 北京 100044
- 折叠
摘要
Abstract
In the motor closed-loop control system,the inverter-motor load can be treated as a constant power load due to the fast follow-up of the torque.The negative impedance characteristic of the constant power load(CPL) causes the traction drive system to have less damping,which causes the DC side voltage and current to oscillate.In this paper,the cause of DC side oscillation of the traction drive system induced by constant power load is expounded by analyzing the traction converter model,the mathematical model of the built-in interior permanent magnet synchronous motor(IPMSM) and the mathematical model of the control system.Then,through the small signal analysis.The admittance model of the inverter-built-in permanent magnet synchronous motor system under the control of Maximum Torque Per Ampere(MTPA) is deduced.On the basis of the admittance model in this paper,the influence of LC parameters,inductance parameters,stator resistance parameters and power on the stability of the system is analyzed by the stability analysis method in the frequency domain,and also,the influence of the parameters on the stability and the process of change of motor's stability was found.Based on the theoretical analysis,a kind of active damping compensation method is realized.Simulation and experiment prove that the compensation method can effectively increase the system damping and improve the stability of the system.关键词
直流振荡/最大转矩电流比控制/阻尼补偿/小信号分析/导纳模型/参数变化Key words
DC oscillation/maximum torque per ampere(MTPA)/damping compensation/small-signal analysis/admittance model/parameters change分类
信息技术与安全科学引用本文复制引用
钟志宏,方晓春,林飞,杨中平..MTPA控制下逆变器-IPMSM系统直流侧电压稳定性研究[J].电工技术学报,2017,32(21):34-43,10.
