Hydrogenerator Maintenance Course

August 13-15, 2019 Montreal, Canada


About the Course

The course focuses on hydro-electric generators. Although much of the discussion relates to synchronous machines rated greater than 10MVA and 6.9kV the principles apply equally to generators of all sizes down to 4kV. Discussion will concentrate on stators (frames, windings and laminated cores), rotors (windings, rims and spiders), as well as brackets, bearings and cooling. The course is presented from an end user perspective, rather than that of a machine designer.


This course is directed at engineering and maintenance personnel responsible for the purchase, installation, maintenance, testing and repair of hydrogenerators.

Topics covered in this course include:

Introduction and Stator Windings

Stator Windings and Core

Stators and Rotors


Dr. Greg Stone was one of the developers of on-line partial discharge test methods to evaluate the condition of the high voltage insulation in stator windingsFrom 1975 to 1990 he was a Dielectrics Engineer with Ontario Hydro, a large Canadian power generation company.  Since 1990, Dr. Stone has been employed at Iris Power L.P. in Toronto Canada, a motor and generator condition monitoring company he helped to form.  He has published two books and >200 papers concerned with rotating machine windings.  He has awards from the IEEE, Cigre and IEC for his technical contributions to rotating machine assessment.  Greg Stone has a BASc, MASc and PhD in Electrical Engineering from the University of Waterloo (Canada), is a Fellow of the IEEE.  He is a registered professional engineer in the Province of Ontario, Canada.

Dr. Nicolas Dehlinger is a Rotating Machine Engineer at Iris Power (Qualitrol). He graduated from the Université Laval, Québec, Canada, in 2007 (M.Sc.) and in 2011 (Ph.D.), with a specialization in Electrical Machine Design. Since 2010, he has been working as an electrical design engineer for GE (formerly Alstom) in Tracy, Canada and in Denver, USA. He was mainly involved in generator refurbishment projects, repair/testing and assessment of generator windings and cores.

To register complete registration form and email to

Download Registration Form


Le Westin Montreal
270, Saint-Antoine Ouest
Montréal, Québec   H2Y 0A3
(514) 380-3333

Room Rate: $249.00 Canadian

Book room

For more information contact Karen Howard,, + 1 905-364-4568


Learning Center

This Resource Library is designed to provide current, relevant resources that provide technical knowledge and practical solutions for owners and operators of rotating machines. We encourage you to use the search feature and filters to locate specific resources of interest.


Articles, Technical Papers, & Case Studies

Stator Endwinding Vibration in Two-Pole Machines


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