3MW Permanent-magnet Synchronous Wind-driven Generator

As the single unit capacity of wind-driven generator is increased，low speed permanent-magnet synchronous wind-driven generator， whose drive mode adopts semi-direct drive structure， becomes one of the key development directions. 　

Due to large volume and heavy weight of direct-drive generator stator， further increase in its capacity will cause difficulties in manufacture and transportation. Integrated driven type (semi-direct drive) wind-driven generator becomes the optimum plan to solve this problem. Through adding a primary gear box at drive end, speed of generator can be accelerated, and dimension of the machine can be efficiently reduced， therefore， power grade of generator can be further improved. 3MW permanent-magnet synchronous wind-driven generator is developed to meet this requirement.

Main technical features

Cooling method: IC666. It has good heat dissipation， saves more energy and enjoys higher efficiency.

Installation mode: IMB3， protection grade: IP54；

Stator applies vacuum pressure impregnation varnish， and winding insulation is very reliable;

Permanent-magnet synchronous motor enjoys wider speed control and higher efficiency.

Automatic lubricator is applied to fuel the bearing， easy for maintenance.

Stator winding is equipped with thermal resistance sensor for monitoring temperature rise of winding in real-time;

Motor is embedded with moisture-proof heater， to prevent condensation at winding ends， when the machine is shutdown.

All the surface structure applies three-proofing treatment to meet the requirement of three-proofing， which can improve surface anticorrosion capability.

Main technical parameters

Drawing of generator figuration