STK ALTERNATORS

Permanent magnets frameless alternators for Direct Drive of wind and water turbines

The range of STK Permanent Magnet alternators, also called permanent magnet generators,  addresses the applications of Wind Turbine generators, windmill  alternators or windmill generators for small wind turbines and small water turbines, that is to say in low and medium power needing the highest power-to-weight ratio in Direct Drive without gear for matching cost-effective solutions.

• Rated power from 200 W up to 95 kW depending on size and rated speeds.
• Rated speeds from 80 RPM up to 1500 RPM.
• Six overall diameters from 145 mm up to 795 mm.
• Internal diameter from 56 mm up to 630 mm.
• Various available voltages up to 500 Vac.
• For environment and integration constraints, please request our STK handbooks for assembly
• Frameless design: one rotor and one stator to be integrated inside user’s mechanics

• No speed multiplier, no gear
• No maintenance
• Highest power-to-weight ratio in Direct Drive
• High efficiency
• Simplification of mechanical design
• Easy mechanical interface
• Cost optimization

The range of AC  frameless permanent magnet generators STK includes 6 sizes from 145 mm up to 800 mm available in four different lengths per size and two standard rated speeds. Their extremely compact design and high efficiency allow the use in direct drive in small wind turbines as wind turbine generators and windmill generators.

145 STK Alternators for wind turbines

• Rated power from 200 W up to 5,5 kW
• Rated speed : from 650 RPM up to 1500 RPM
• Hollow shaft : 56 mm diameter

Dimensions alternators 145 STK

Technical characteristics Alternators 145 STK

Curves of Power, Voltage, Torque, Efficiency vs Speed

• 145STK2M
• 145STK4M
• 145STK6M
• 145STK8M

190 STK Alternators for wind turbines

• Rated power from 1.1 kW up to 8.5 kW
• Rated speed : from 500 RPM up to 1500 RPM
• Hollow shaft : 72 mm diameter

Dimensions alternators 190 STK
Technical characteristics Alternators 190 STK

Curves of Power, Voltage, Torque, Efficiency vs Speed

• 190STK2M
• 190STK3M
• 190STK4M
• 190STK6M
• 190STK8M

300 STK Alternators for wind turbines

• Rated power from 3 kW up to 19 kW
• Rated speed : from 350 RPM up to 800 RPM
• Hollow shaft : 190 mm diameter

Dimensions alternators 300 STK
Technical characteristics Alternators 300 STK

Curves of Power, Voltage, Torque, Efficiency vs Speed

• 300STK1M
• 300STK2M
• 300STK3M
• 300STK4M
• 300STK6M
• 300STK8M

400 STK Alternators for wind turbines

• Rated power from 4 kW up to 33 kW
• Rated speed : from 220 RPM up to 800 RPM
• Hollow shaft : 258 mm diameter

Dimensions alternators 400 STK
Technical characteristics Alternators 400 STK

Curves of Power, Voltage, Torque, Efficiency vs Speed

• 400STK2M
• 400STK3M
• 400STK4M
• 400STK6M
• 400STK8M

500 STK Alternators for wind turbines

• Rated power from 4.7 kW up to 43 kW
• Rated speed : from 150 RPM up to 600 RPM
• Hollow shaft : 350 mm diameter

Dimensions alternators 500 STK
Technical characteristics Alternators 500 STK

Curves of Power, Voltage, Torque, Efficiency vs Speed

• 500STK2M
• 500STK3M
• 500STK4M
• 500STK6M
• 500STK8M

800 STK Alternators for wind turbines

• Rated power from 7 kW up to 95 kW
• Rated speed : from 80 RPM up to 400 RPM
• Hollow shaft : 630 mm diameter

Dimensions alternators 800 STK
Technical characteristics Alternators 800 STK

Curves of Power, Voltage, Torque, Efficiency vs Speed

• 800STK1M
• 800STK2M
• 800STK4M
• 800STK6M

Download documentation about Alternators Kits STK

STK Alternators General Description.
Application note of ALXION STK permanent magnets frameless alternators for direct drive of wind turbines

Download External drawings

Download External drawings