Permanent magnet Vernier (PM-V) machines, at low power levels (few kWs), have shown a great potential to improve the torque density of existing direct-drive PM machines without much compromising on efficiency or making machine structure more complicated. An improved is very desirable for offshore wind applications where size an increasing concern. However, relatively poor factors PM-V will incr...

In the present work, a methodology that allows optimizing permanent magnet synchronous generator (PMSG) design by establishing limit values of radius and length maximize efficiency for nominal parameters wind turbine is developed. The consists two fundamental models. One model calculates from base, other optimization determines optimum generators according to criteria maximum with minimum weigh...

Aiming at the problem that extended Kalman filter (EKF) is difficult to determine appropriate system and measurement noise matrices in parameter identification of direct-drive permanent magnet synchronous generator (D-PMSG), a method D-PMSG based on mean particle swarm optimization with extreme disturbance (EDMPSO)-EKF proposed. Firstly, by analysing principle EKF, dual-thread model established...