Arrangements for controlling key bar movement in a stator assembly

In order to control key bar 420 movement in a stator assembly 400, the stator assembly includes multiple core ring compression bands 430 longitudinally spaced apart and disposed around a stator core (405) having a plurality of key bars 420 radially spaced apart and extending longitudinally along a peripheral edge of the stator core 405. Each of the core ring compression bands (200) is formed from multiple semi-circular sections (e.g. 427a,427b) coupled to form the respective core ring compression band 430. Each of the key bars 420 can be disposed within respective cut-outs. Adjustable connectors 435 may be provided between band section along with fixed links (see fig 3) may be used. Cut-outs 430 defined in an inner edge of the core ring compression bands may receive the key-bars). Core support rings 440 are fixed or integrated with the key-bars to mount the stator core in a housing. For example, as shown in fig 5, core support rings 520a are fixed to the key bars 510 and mounted to a stator frame 525 by means of spring bars fixed to section plates 535.