The utilization of wind energy can alleviate the problems of fossil energy shortage and environmental pollution. As the core unit of wind power generation systems, improving the design and manufacturing technol.
What is direct drive wind turbine?
Direct drive wind turbine adopts multi-pole structure, which can achieve the direct coupling between the wind turbine and generator, so the gearbox can be omitted, , .
What is direct drive permanent magnet synchronous wind turbine?
With the continuous progress of power electronic technology and computer control technology, large-scale wind turbine can use the technology of direct driven permanent magnet wind turbines. Direct drive permanent magnet synchronous wind turbine is characterized by low speed and high torque requirements , , .
Third, for future wind turbines with higher power ratings than the current rating, the direct drive is more efficient since gearbox wind turbines require extra stages of gears, which leads to more gearbox losses. There are more possible outcomes with regard to technology dominance though.
This type of wind turbine is known as the variable speed direct drive wind turbine and was introduced to eliminate gearbox failure and transmission losses. The rotor is directly connected to the generator, implying that the generator speed is equivalent to the rotor speed.
Which synchronous wind turbine design scheme has the least use of permanent magnets?
The electromagnetic design scheme of 50 poles and 180 slots has the least use of permanent magnets and the lowest cost. It can be selected as the best scheme for the production of the 1.5 MW semi-direct drive permanent magnet synchronous wind turbine. Table 2.
This article also illustrated that the drivetrains in wind turbines are very multidisciplinary objects in all stages of their life cyclesfrom design to operation, to lifetime extension, to end of service and recycling.