The range of STK Permanent Magnet frameless alternators alxion.com

The range of STK Permanent Magnet frameless alternators addresses the applications of Wind Turbine generators in low and medium power needing the highest power-to-weight ratio in Direct Drive without gear for matching cost-effective solutions.

Each component of a wind turbine generator and wind turbine alternator requires maximum strength and precision in order to ensure perfect control over the blades.


Main characteristics of wind turbine alternators


Rated power from 200 W up to 99 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.

Assets of wind turbine alternators


No speed multiplier, no gear
No maintenance
Highest power-to-weight ratio in Direct Drive
Simplification of mechanical design
Easy mechanical interface
Cost optimization
Characteristics of the range of wind turbine alternators


The range of permanent magnet frameless alternators STK includes 6 sizes from 145 mm up to 800 mm available in four different lengths per size and two standard rated speeds

STK ALTERNATORS RANGE - Complementary data

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





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





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





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





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





800 STK Alternators for wind turbines

Rated power from 7 kW up to 99 kW
Rated speed : from 80 RPM up to 400 RPM
Hollow shaft : 630 mm diameter Dimensions alternators 800 STK
Technical characteristics Alternators 800 STK





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documentation about Alternators Kits STK

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




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External drawings

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