高速开关磁阻发电机励磁参数优化控制

为了提高开关磁阻发电机高速运行时的发电效率，改善整个系统的高速运行性能，提出了一种励磁参数优化策略：以相电流有效值作为励磁参数优化指标，针对开关磁阻电机自身非线性的特点，选取使得相电流有效值最小的开通角和关断角作为优化的励磁参数，并通过曲线拟合手段对这些离散的优化参数进行处理．最后将优化的励磁参数与提出的控制算法相结合，实现了整个发电系统的优化控制．仿真和实验验证表明：该方法易于实现，整个系统不仅具有较高的发电效率，而且在负载突变时呈现出良好的调节特性．

Optimal control of the excitation parameters of high speed switched reluctance generators

To enhance the generating efficiency of high speed switched reluctance generator,an optimization strategy was proposed,which took the root mean square(RMS) value of phase current to be the optimization indicator.Considering the nonlinear characteristics of SRM,turn on angles and turn off angles that produced the lowest RMS of phase current were chosen to be the optimal ones,those discrete optimal parameters was expressed as continuous equations using curve fitting method.Finally,a novel control strategy based on the optimal excitation parameters was proposed to implement the whole system.Simulation and experimental results show that the proposed strategy is easy to implemented,generating efficiency is improved,and favorable control performances can also be achieved under load disturbance.