Patent ID: 11950389
Assignee: nan
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC H  E  F | IPC E  F  G  H

Claim 9:
10. A method of producing a subsea variable speed drive apparatus comprising a pressure resistant container configured to hold atmospheric pressure, the container comprising a curved wall section having a curved internal surface, and a variable speed drive comprising at least one power electronics module arranged inside the container, the method comprising the steps of:
mounting a heatsink comprising a curved surface having a radius of curvature corresponding to a radius of curvature of the internal surface so that the curved surface contacts the internal surface; and
mounting the at least one power electronics module on the heatsink;
wherein said step of mounting the heatsink on the internal surface comprises fixedly attaching the heatsink to the internal surface so as to create a contact pressure between the heatsink and the internal surface to thereby provide efficient heat transfer from the heatsink to the container.