1500kW Direct Drive Permanent Magnet Generator PMSG 690V for Offshore Wind
This 1500kW direct drive permanent magnet generator is engineered for offshore and large onshore wind turbines. The 120-pole rotor operates at only 15rpm together with the hub, completely eliminating the gearbox and reducing the main shaft drive train from three heavy components down to one slow-speed electric machine.
Key Features
- Gearbox-free drive train reduces tower head mass and maintenance costs offshore
- 120-pole low-speed rotor with high torque density for 15rpm direct coupling
- Sealed IP67 enclosure with marine-grade corrosion protection for offshore salt atmosphere
- Water-cooled stator with redundant cooling loops for continuous full load operation
- Converter-interfaced variable speed operation from 5rpm to 17rpm
Technical Parameters
| Name |
1500kW Direct Drive Wind PMSG |
| Rated Power |
1500kW |
| Rated Voltage |
690V AC |
| Phase |
Three Phase |
| Frequency |
Converter to 50/60Hz |
| Rated Speed |
15rpm |
| Poles |
120 |
| Efficiency |
≥96% |
| Protection Grade |
IP67 |
| Insulation Class |
Class H |
| Cooling Method |
Water Cooled |
| Bearing Brand |
SKF |
Structure Diagram

Applications
Developed for 1.5MW class offshore wind turbines and large distributed wind farms. Drive train engineering service, cooling system sizing, and converter matching are offered with each unit.
Application

Quality and Service
Every unit is load tested before shipment and supplied with test certificate, wiring diagram, and installation manual. CE certification and OEM service are available. Please contact our engineers with your turbine or genset parameters to confirm the matching permanent magnet generator solution.