slinky lam stacks

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NEW STATOR CORE MANUFACTURING CONCEPTIONS by Prof. Dr.-Ing. Friedrich Klinger INNOWIND Forschunggesellschaft mbH 66115 Saarbrücken, Germany [email protected]

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This is a presentation demonstrates the manufacturing process of Laminations by Slinky method, where the Utilisation Factor of Material increses Drastically.

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Page 1: Slinky Lam Stacks

NEW STATOR CORE MANUFACTURING CONCEPTIONSby Prof. Dr.-Ing. Friedrich Klinger

INNOWIND Forschunggesellschaft mbH66115 Saarbrücken, Germany

[email protected]

Page 2: Slinky Lam Stacks

CWIEME BERLIN 2011 224. May 2011

Content

1. Direct Drive generators in wind turbines

2. Punching and stacking by slinky concept

3. Manufacturing steps for the stator core

4. Concepts for automated stacking

5. Manufacturing 3000 wind turbines per year

Page 3: Slinky Lam Stacks

CWIEME BERLIN 2011 324. May 2011

Direct Drive Generators - Generators with outer rotor

Vensys 90

Page 4: Slinky Lam Stacks

CWIEME BERLIN 2011 424. May 2011

Direct Drive Generators – Generators with inner rotor

Page 5: Slinky Lam Stacks

CWIEME BERLIN 2011 524. May 2011

Direct Drive Generators – Generators with outer rotor

Page 6: Slinky Lam Stacks

CWIEME BERLIN 2011 624. May 2011

Direct Drive Generators – Lamination stack

Page 7: Slinky Lam Stacks

CWIEME BERLIN 2011 724. May 2011

Punching and stacking by slinky concept – slinky machine

Page 8: Slinky Lam Stacks

CWIEME BERLIN 2011 824. May 2011

Punching and stacking by slinky concept – lamination for outer rotor

Page 9: Slinky Lam Stacks

CWIEME BERLIN 2011 924. May 2011

Origin: The Switch

Punching and stacking by slinky concept – lamination for inner rotor

Page 10: Slinky Lam Stacks

CWIEME BERLIN 2011 1024. May 2011

Punching and stacking by slinky concept – punching and stacking machine

Page 11: Slinky Lam Stacks

CWIEME BERLIN 2011 1124. May 2011

Punching and stacking by slinky concept – slinky machine with lift

Page 12: Slinky Lam Stacks

CWIEME BERLIN 2011 1224. May 2011

Manufacturing steps for the stator core – procedure of stator production

Page 13: Slinky Lam Stacks

CWIEME BERLIN 2011 1324. May 2011

Manufacturing steps for the stator core – sheet segment with support structure

Page 14: Slinky Lam Stacks

CWIEME BERLIN 2011 1424. May 2011

Manufacturing steps for the stator core – sheet segment band

Page 15: Slinky Lam Stacks

CWIEME BERLIN 2011 1524. May 2011

Manufacturing steps for the stator core – Segment for inside stator

Page 16: Slinky Lam Stacks

CWIEME BERLIN 2011 1624. May 2011

simplified lamination

Pressure plate 10mm

BarProfile

Claming element e.g. cup spring

Manufacturing steps for the stator core – axial fixation of the stack

Page 17: Slinky Lam Stacks

CWIEME BERLIN 2011 1724. May 2011

Concepts for automated stacking of segments

Page 18: Slinky Lam Stacks

CWIEME BERLIN 2011 1824. May 2011

Manufacturing 3000 wind turbines per year – Stator data and stacking time

Air gap diameter: 5200mmNumber of slots: 384Segments per layer: 24Core axial length: 1200mmTotal number of segments: 24 x 1200mm/0,5mm = 57600

Time per cycle: 2s/cycleNumber of robots: 2Number of parallel segmentsper robot and cycle: 4Netto stacking time: 2 x 57600/(4x2) = 14400s = 4hTime for pressing and other: 4h

Total time: 8h

Page 19: Slinky Lam Stacks

CWIEME BERLIN 2011 1924. May 2011

Manufacturing 3000 wind turbines per year – layout for stacking unit

Automated stacking in 8 hours.

6 automated stacking stations are needed to manufacture 3000 stators per year,250 working days and 2 shifts

Page 20: Slinky Lam Stacks

CWIEME BERLIN 2011 2024. May 2011

Automatic Stator core stacking

Page 21: Slinky Lam Stacks

CWIEME BERLIN 2011 2124. May 2011

Automatic Stator core stacking

Page 22: Slinky Lam Stacks

CWIEME BERLIN 2011 2224. May 2011

Automatic Stator core stacking