Patent ID: 7045918

Claim:
A suspension apparatus for suspending a ring-shaped or tube-shaped stator core in an electric generator upon a foundation, wherein natural modes of vibration are excited in the stator core during operation, including known second vibration mode with four circumferentially distributed loops and four nodes being displaced 45 degrees from the loops, and a known third vibration mode with four loops and four nodes displaced 45 degrees in relation to the loops and nodes of the second vibration mode, comprising: two yokes pivotally connected to the foundation at opposite sides of the stator core, each yoke being connected to the stator core at an upper and a lower connection point; a non-rigid connection connecting the two yokes and the foundation; and two connection members connecting the two yokes and the stator core at connection points on opposite sides of the non-rigid connection; wherein the connection points are located on the stator core substantially at two adjacent loops of one of the second and third vibration modes, such that radial deflections of the stator core at the respective connection points are transferred into a rocking movement of the yoke around the non-rigid connection.