逆变器消谐PWM模型的快速同伦算法

Fast Homopoty Algorithm of the Inverter Harmonic Elimination PWM Model

介绍了单极性脉冲和双极性脉冲两种控制模型 .针对早期模型的求解费时的问题 ,将有效步长控制法和同伦方法相结合 ,构造了求解此类模型的快速同伦算法 .该算法搜索步长可自动调整 ,算法迭代的收敛域扩大 ,且需求迭代的次数相比于牛顿法可减少40 %～ 50 % ,相比于一般的同伦算法可减少 1 5%～ 2 0 % .

Two harmonic elimination control model of single-p ha se inverter, ie.,the unipolar pulse control model and the bipolar pulse control model, were introduced. Aiming at the disadvantage of long solving time cost of traditional models,a fas t homopoty algorithm for solving the model was presented by combining the valid st ep control with the homopoty method.This method has a primary featrue of auto-ad justing search step. The algorithm convergence domains w as expended. The number of iteration step needed is less 40%～50% than Newton's, and is less 15%～20% than genernal homopoty algrithm's.