Subway vehicle traction invertor output harmonic phase angle detection method

The invention provides a subway vehicle traction invertor output harmonic phase angle detection method, including the steps of S1, acquiring output electric parameter of a subway vehicle traction invertor; S2, subjecting non-linear data acquired in the step 1 to standardized processing; S3, building an output harmonic phase angle detection model of the subway vehicle traction invertor; S4, performing calculation of iterations for the output harmonic phase angle detection model of the subway vehicle traction invertor through a convergence computational formula according to the detection model and corresponding output amplitude of the traction invertor at the same time, determining the value of the output harmonic phase angle of the detection angle when minimum convergence is achieved and last group of weight vectors after the minimum convergence; S5, calculating the output harmonic phase angle of the subway vehicle traction invertor. As the particle swarm optimization and the artificialneural network model are