矿用防爆电动车异步电机控制策略研究

发布时间：2018-11-24 15:23

【摘要】：随着高产高效的现代化矿井建设,矿用防爆电动车凸显出零排放、噪声低等优点,与防爆柴油车相比在环保和节能方面具有优势明显,而煤矿井下运行环境对车辆的控制策略有着特殊要求。为了适应井下的运输环境,论文设计出适合矿用电动车的电机控制策略,开展以下工作:(1)基于矿用防爆电动车特点,确定出防爆电动车整体结构以及布局,并对其动力系统进行匹配,得出合理的电动车电机、蓄电池参数及型号,利用Cruise软件对整车系统进行建模与动力性能仿真。(2)以交流异步电机为对象,研究其矢量控制原理,按照转子磁场的定向控制,对磁链进行观测,在Matlab/Simulink软件下建立转子磁链的电流模型和电压模型,通过仿真结果确定基于转子电流模型的闭环控制方案。(3)根据电动车在煤矿井下的行驶特点,设计出基于磁链闭环反馈的矢量控制算法,在Matlab/Simulink环境下建立矢量控制算法模型并进行仿真,得到电机运行效果图,验证方案的正确性和有效性。(4)搭建实验台并进行实验验证,通过实验结果与仿真结果的对比分析,所设计矢量控制策略可有效提高电机的转矩输出能力以及转矩的响应速度。
[Abstract]:With the construction of modern mine with high yield and high efficiency, explosion-proof electric vehicles for mining have the advantages of zero emission and low noise, and have obvious advantages in environmental protection and energy saving compared with explosion-proof diesel vehicles. The coal mine operating environment has special requirements for vehicle control strategy. In order to adapt to the underground transportation environment, the paper designs the motor control strategy suitable for mine electric vehicles, and carries out the following work: (1) based on the characteristics of mine explosion-proof electric vehicles, the overall structure and layout of explosion-proof electric vehicles are determined. By matching its power system, the reasonable parameters and models of electric vehicle motor, battery are obtained, and the whole vehicle system is modeled and simulated by Cruise software. (2) the AC asynchronous motor is taken as the object. The principle of vector control is studied. According to the directional control of rotor magnetic field, the flux chain is observed, and the current model and voltage model of rotor flux are established under Matlab/Simulink software. The closed-loop control scheme based on rotor current model is determined by simulation results. (3) according to the driving characteristics of electric vehicles in coal mines, a vector control algorithm based on flux chain closed-loop feedback is designed. The vector control algorithm model is established and simulated in Matlab/Simulink environment, and the running effect diagram of the motor is obtained, which verifies the correctness and effectiveness of the scheme. (4) the experimental platform is built and the experimental results are verified. By comparing the experimental results with the simulation results, the designed vector control strategy can effectively improve the torque output capacity and torque response speed of the motor.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TD614.3

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