**[ICEM]** Pyleecan: an open-source Python object-oriented software for the multiphysic design optimization of electrical machines ================================================================================================================================== Authors ------- Pierre Bonneel ; Jean Le Besnerais ; Raphaël Pile; Emile Devillers Status ------ Accepted in ICEM 2018 Date ---- 3rd-6th September 2018 Keywords -------- Simulation software, Open source, Electrical machines, Design optimization, Multiphysics Abstract -------- This paper presents the first open-source development project for the electromagnetic design optimization of electrical machines and drives named Pyleecan – PYthon Library for Electrical Engineering Computational ANalysis. This paper first details the objectives of Pyleecan open-source development project, and the object-oriented architecture of the software that has been developed and released. Then it reviews and compares the available free and open-source software used during the multiphysic design of electrical machines including electromagnetics, heat transfer and vibro-acoustic analysis. Pre-print --------- The paper can be downloaded [here](https://www.pyleecan.org/publications/pid5329885.pdf). The oral presentation can be downloaded [here](https://www.pyleecan.org/publications/2018_09_05_pyleecan_a_new_open_software_project.pdf).