摘要
为实现电动车组在0～250km/h的速度范围内稳定运行,提出一种恒速控制策略。通过牵引控制与恒速控制之间平滑过渡,防止在不同控制方式之间切换时引起较大的转矩和电流波动。在速度低于125km/h采用准恒转矩控制,速度高于125km/h采用恒功率控制。采用直接转子磁场定向控制系统,牵引逆变器采用空间电压矢量控制的带中点钳位二极管的三电平拓扑结构。仿真结果验证系统具有良好的动态性能和稳态性能。
In order that EUM can stably run at any speed ranging from 0 to 250 km/h, a constant-speed control strategy is proposed. Via smooth transition between traction and constant-speed control, fluctuation of torque and current is avoided during switch between different control methods. Quasi-constant torque control is used when the speed is lower than 125 km/h, and constant power control is applied when the speed is higher than 125 km/h. Direct rotor flux oriented control system is employed and three-level neutral point clamped （NPC） traction inverter with SVPWM control＇is adopted. Simulation results prove that the control system features good dynamic and steady performance.
出处
《机车电传动》
2007年第5期12-14,共3页
Electric Drive for Locomotives
基金
铁道部重点项目(编号:20060802)
关键词
高速动车组
准恒转矩控制
恒功率控制
恒速控制
high-speed EMU
approximately constant torque control
constant power control
constant speed control
