Sepehr Saadatmand Mohammad Saleh Sanjarinia Pourya Shamsi Mehdi Ferdowsi Dual Heuristic Dynamic Programing Control of Grid-Connected Synchronverters. 2019 abs/1908.05191 CoRR http://arxiv.org/abs/1908.05191 db/journals/corr/corr1908.html#abs-1908-05191