| Popis: |
With respect to the voltage distortion caused by harmonics and unbalanced loads, traditional digital phase lock algorithm doesn't work properly. And this paper presents a novel estimating algorithm based on BP neutral network model. The voltage signal is the input of the network and then by training the network with the prepared samples, the network can calculate the grid phase correctly. This algorithm has no relationship with the harmonics so it can work in a wide range. A network program is finished and the algorithm is validated. The results show that the algorithm works effectively and the result is correct. |
