Energy consumption reduction of a center-pivot with the use of a variable-frequency drive - Almeida, Isabela Alvarenga; Colombo, Alberto; Araújo, Ana Cláudia Sátiro; Almeida, Rafael Alvarenga; Costa, Jéfferson de Oliveira; Quiloango-Chimarro, Carlos Alberto (Brazilian Journal of Biosystems Engineering, 2022)