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标题：电动汽车用永磁同步电机遗传优化鲁棒控制研究 |
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作者：戴彦 |
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| 2015年第6期 访问次数：230次 |
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摘要：针对四轮毂式电动汽车车用永磁同步电机的车速跟踪问题和由复杂路况引起的负载扰动问题，建立了永磁电机的状态空间模型。利用鲁棒H∞混合灵敏度方法设计了交轴电流环控制器，并采用遗传算法选取最优的鲁棒加权函数。仿真结果表明，即使在系统外界干扰存在的情况下仍能保证整个系统稳定。该方法可以提高汽车在行驶过程中的抗干扰性能和车速跟踪性能。
关键词：电动汽车；永磁同步电机；鲁棒H∞控制；遗传算法
Abstract: Considered the characteristics of switched reluctance motors, the mathematical model of motors was established. The theory of motor working and the relationship among phase current, flux and position angle was analyzed. In the Matlab/Simulink, the model of switched reluctance motor drive system was built. And the influence that voltage and breaking angle affect the motor speed, torque, current was analyzed. The system of current and speed double loop was established based on the simulation analysis, and comparing with current chopper speed control system. Simulation results show the current and speed double loop system has advantages, such as rapid start, small ripple and stability, which is more suitable for controlling the speed of the switched reluctance motor.
Key words: switched reluctance motor; double closed loop control; current chopping control |
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