摘要：直流侧LC电路参数不匹配或者控制算法不当会引起异步电机牵引系统的母线电压、电流会产生振荡，降低系统稳定性。针对以上本文建立了牵引系统数学模型，并通过Matlab仿真软件建立了异步电机直流侧振荡抑制牵引系统的仿真模型，进行了仿真研究，提出了基于矢量控制算法振荡抑制控制策略，对直流侧母线电压、电流产生振荡进行有效地抑制，仿真结果验证了本文提出方法的合理性。最后通过地面联调试验验证了本文提出方法的可行性。
关键词：牵引系统；矢量控制；振荡抑制；DSP；仿真
Abstract: The mismatch parameters of LC circuit or the improper control strategy could cause the DC-link voltage and current of the asynchronous motor traction system to oscillate and reduce stability of the system. For above problems，in this paper the mathematical model of traction system was established, the simulation model of DCLink oscillation suppression strategy of asynchronous motor based on VC was established by Matlab simulation software, and the simulation research was done. Based on vector control algorithm, oscillation suppression strategy was proposed. The oscillation of DClink voltage and current was effectively suppressed by this method, and in this paper the rationality of method was verified by simulation results. Finally, the feasibility of the proposed method was verified by the exper iment results.
Key words: traction system; vector control; oscillat ion suppression; DSP; simulation