励磁变换器控制的定子双绕组感应发电机优化设计

针对新型励磁变换器控制的定子双绕组感应发电机控制绕组励磁变换器容量的最小化问题，总结了带整流型负载的感应发电机的设计特点，给出了其变速运行时功率绕组励磁电容的优化方法，讨论了带整流型负载发电机计算容量的确定原则。本文还提出了将改进实数编码的遗传算法与二维有限元电磁场分析相结合的方法应用于变速运行的双绕组感应发电机的优化设计中，以实现全局优化，提高优化效率。样机优化结果表明，在转速变比为1：3时，该方法能使励磁变换器的容量减小到额定输出功率的1／3左右，从而减小了变换器的体积和重量。

OPTIMAL DESIGN OF DUAL STATOR-WINDING INDUCTION GENERATOR WITH PWM CONVERTER

To minimize the reactive power of the converter of the control winding in the novel dual stator-winding induction generator based on the PWM converter, design features of the induction generator with a rectified load are proposed. The optimization method of excited capacitors to minimize the reactive power of the control winding at a variable speed is given. The calculation capacity of the machine with a diode bridge rectifier load is proposed. To achieve global searching, the integrated method with the improved real-coded genetic algorithm and the two-dimensional finite element method (FEM) is introduced. Design results of the sample show that reactive power can be reduced by the method, and the converter capacity can be decreased to 1/3 of output rated power at the speed ratio of 1∶3, thus reducing the volume and the mass of the inverter.