Model-Free Multiphase AC Signals Downscaling Method Using Orthogonal Phase-Lock Autoencoder and Circular Harmonic Decomposition | 2024 Publication type A1 Journal article (refereed), original research Author(s) Qi Xing, Qiu Tingting, Aarniovuori Lassi, Zhang Qian, Xu Jiazi, Cao Wenping Other Focus Area LUT School of Energy Systems