Handbook of Large Hydro Generators. Geoff Klempner
with adjustable fulcrum points...Figure 2.2-1 Shows outside part of stator frame showing the wrapper plate an...Figure 2.2-2 Typical soleplate positioned in the foundation awaiting final s...Figure 2.2-3 Shows another style of soleplate with double “J or T” hooks.Figure 2.3-1 Four pole generator flux pattern.Figure 2.3-2 Flux distribution and flux density at no load obtained by FE si...Figure 2.3-3 Flux distribution and flux density at rated load obtained by FE...Figure 2.3-4 Flux distribution and flux density during sudden short circuit ...Figure 2.3-5 Shows the flux distribution in the over‐excited mode with field...Figure 2.3-6 Shows the flux density in the over‐excited mode with field curr...Figure 2.3-7 Shows the flux distribution in the under excited mode with fiel...Figure 2.3-8 Shows the flux density in the under excited mode with field cur...Figure 2.7-1 Typical multi‐turn coil strand configurations.Figure 2.7-2 Typical single turn Roebel bar configuration.Figure 2.7-3 Cross section of stator bar in the stator slot.Figure 2.7-4 Cross section of a stator multi‐turn coil in the stator slot.Figure 2.7-5 Shows a two turn bar in the stator slot (teeth are adjacent to ...Figure 2.7-6 Stator endwinding showing reversing group jumper connection on ...Figure 2.7-7 Stator endwinding showing reversing group jumper connections on...Figure 2.7-8 Showing reduced eddy current losses with individual strands of ...Figure 2.7-9 Individual strand cross section to reduce losses from right to ...Figure 2.7-10 Looping of a coil with inverted turn.Figure 2.7-11 Roebel transposition 3D view.Figure 2.7-12 Roebel bar principle.Figure 2.7-13 Temperature profile of a double‐stack stator bar with separate...Figure 2.7-14 Cross Roebel transposition‐temperature profile of a double‐sta...Figure 2.7-15 Cross Roebel transposition – temperature profile of a double s...Figure 2.7-16 Shows a 3D representation of a typical water cooled stator bar...Figure 2.7-17 Direct cooled stator winding (rotor poles removed).Figure 2.7-18 Shows the black semiconducting material and the grey Silicon C...Figure 2.7-19 Flat side‐packing (top) and ripple spring (bottom) with semico...Figure 2.7-20 Shows stand up view of Figure 2.7-19 to illustrate the ripple ...Figure 2.8-1 Typical packing material and wedge assemblies.Figure 2.8-2 Various types of wedge assemblies.Figure 2.8-3 Shows core packet and fretting at the interface of wedge groove...Figure 2.8-4 Shows minimal damage to wedge groove after cleaning.Figure 2.9-1 Stator endwinding support system for a bar winding.Figure 2.9-2 Stator endwinding support system for a multi‐turn coil.Figure 2.10-1 Two parallel Y connected winding.Figure 2.10-2 Four parallel Y connected winding.Figure 2.10-3 Two parallel paths with long series jumpers.Figure 2.11-1 Generator main leads – new installation with tags to show test...Figure 2.11-2 Shows split phase CT's on main output leads.Figure 2.11-3 Generator neutral leads – new CT's tested and ready.Figure 2.12-1 Shows a modern day rotor.Figure 2.12-2 Shows rotor from 1925 without the field poles installed.Figure 2.12-3 The beginning of rim piling.Figure 2.12-4 Shows rim stack at an early stage of progression.Figure 2.12-5 Rim being piled showing the stacks of steel laminations and ri...Figure 2.12-6 Rim press operation during the piling process.Figure 2.12-7 Shows rotor rim donuts.Figure 2.12-8 Fully piled rim with no end plate – just steel segments on top...Figure 2.12-9 Shows another rim design with end plates.Figure 2.12-10 Rim key in final position.Figure 2.12-11 Tapered rim keys set in final position by hydraulic jack.Figure 2.12-12 Torque key installation in progress.Figure 2.13-1 Shows a cast and fabricated spider assembly.Figure 2.13-2 Shows spider drum design.Figure 2.13-3 Rotor drum support shelves.Figure 2.13-4 Rotor spider support shelf.Figure 2.14-1 Example flux distribution through pole body.Figure 2.14-2 Shows parts of field pole being assembled.Figure 2.14-3 Shows finished rotor pole end plate with the “L” shaped portio...Figure 2.14-4 Concept of interpolar wedge.Figure 2.14-5 Example of an interpolar wedge.Figure