Nehru Institute of Technology, Kaliyapuram, Coimbatore 6411 05, Tamilnadu, India
This paper focusses on how Stator water cooling system is being carried out using present control logic, its importance, operation, advantages and limitations in existing control.One of the ways of taking away the losses from the windings of any electrical machines is by direct cooling using water. The optimum design of large capacity turbo-generator,as a rule envisages water cooling of stator windings. The 200/210/235 MW generators employ a closed loop circulation of High quality De-Mineralized water through the stator windings made of hollow and solid conductors.To enable software control we introduce Programmable logic controllers (PLC). Today’s PLC consumes milli-seconds of time for each I/O scanning. It is a real-time operating system. They are playing everpopular and critical roles in modern control systems. By introducing PLC into SWC System the total control is made possible with software. Incorporation of HMI and PC makes end-user to view system activities right through desktop screen.