Development of doubly-fed direct drive modular permanent magnet wind generator

Fujitsu;Honda;JR-East Group;Nissan Motor Corporation;TMEic8th International Conference on Renewable Energy Research and Applications, ICRERA 2019 -- 3 November 2019 through 6 November 2019 -- -- 157837A doubly fed permanent magnet synchronous generator (DFPMSG) and converter system has been proposed. The generator has dual winding sets and wind energy is transferred to the grid via two winding sets. The first winding set is directly connected to the grid, while the second winding set is connected to the grid via an AC/DC/AC converter set. The originality of the work lays on four subjects. Firstly, connection to grid with lower power converter capacity by means of doubly-fed structure. Secondly, damping the mechanical oscillations during transient events. Third, direct driving ability by using a permanent magnet synchronous generator. Fourth, new winding and converter structures allow modular generator and converter system. © 2019 IEEE.Türkiye Bilimsel ve Teknolojik Araştirma Kurumu, TÜBITAK: 117E785This work is being supported by The Scientific and Technological Research Council of Turkey under contract number 117E785

Design Considerations on E-core for Modular and Scalable Permanent Magnet Synchronous Machine

IEEE;IEEE Power and Energy Society (PES);IEEE Power and Energy Society (PES) Turkey Section6th International Conference on Electric Power and Energy Conversion Systems, EPECS 2020 -- 5 October 2020 through 6 October 2020 -- -- 1663442-s2.0-85099684200In electrical machines, the modularity by making the stator in multiple parts brings many advantages. The ability to create machines of different power using the same E-cores, to be scalable, is very important in terms of production and transportation costs. In this study, E-core design for a modular and scalable PMSG is discussed. E-core dimensions are determined by considering magnetic and electrical loading, magnetic coupling, torque ripple, cogging torque, voltage harmonics, etc. apart from enabling the creation of different slot/pole combinations. Core and magnet sizes are determined analytically and FEM analysis of two selected models have been performed. Prototypes of machines with slot/pole combinations of 24/22 and 48/46 and rated power of 2.5kW and 5kW respectively have been manufactured with the same E-cores. © 2020 IEEE