Structure of wind power permanent magnet synchronous generator

What is a high-power permanent-magnet synchronous generator (PMSG)?

This paper presents analysis, design, and optimization of a high-power permanent-magnet synchronous generator (PMSG). This generator is introduced in a large-scale wind turbine which can be used in a big wind farm. This generator is used in gearless configuration.

How to choose a wind turbine generator?

Among others is the design of the wind turbine generator. The desired generator should be small and light weight but such design always leads to a tradeoff in the output power aspect , . Permanent Magnet Synchronous Generator (PMSG) and Doubly Fed Induction Generator (DFIG) are most commonly used in wind turbine.

Are air-cored axial-flux permanent-magnet synchronous generators suitable for gearless direct-coupled wind turbines?

Air-cored axial-flux permanent-magnet synchronous generators (AFPMSGs) are potential candidates for gearless direct-coupled wind turbines (DCWTs) owing to providing high efficiency and power density. The design of a DCWT generator is so complicated since the generator cost, dimension, and weight affected by gear elimination.

What factors affect the starting performance of a permanent magnet generator?

The starting performance is crucial in wind-power generation systems. Small wind turbines must be able to start operation even at low wind speeds. Mechanical factors that influence the starting of permanent magnet generators include turbine blade design and shaft friction, whereas electromagnetic factors include the cogging torque.

How do magnet number and wind speed affect a generator?

Note that the magnet number (pole) and wind speed affect the weight and efficiency of the generator. Regarding different wind speeds, it can be mentioned that electric machines are designed in such a way that the optimum design process is done for a specific nominal speed in order to achieve the highest possible efficiency at that point.

Why is a generator important in a wind power generation system?

The performance of the generator in a wind power generation system is critical because it is directly related to the efficiency and weight reduction in the system. Widely used generator types include reluctance, induction, and permanent magnet generators.