Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019).

The growth of electrical equipment in modern 'more-electric' aircraft is achieved by increasing the voltage ofx000D
the electrical power supplies. Electrical stress on the insulation system increases as the voltage increases, andx000D
results in partial discharges (PD). At higher voltages, the partial discharges will be disruptive and lead tox000D
insulation failure. The integrity of the electrical insulation system of more-electric aircraft is a serious concernx000D
under operating conditions of higher electric stress and low air pressure. An aircraft experiences a wide rangex000D
of operating pressures during ascent and descent. The pressure at high altitudes of 33,000 to 46,000 feet (10 tox000D
14 km) drops to as low as 30% of the pressure at ground level. It is known that the dielectric strength of airx000D
decreases with altitude, and this increases the risk of partial discharges. The performance of the electric powerx000D
system components of an aircraft must be reliable at high altitude under sub-atmospheric pressures. Because ofx000D
this, PD activity measurement under sub-atmospheric pressures has been a topic of interest for the evaluationx000D
of aircraft insulation system.x000D
The industrial partner of this research project, IRIS Power, is a Canadian company that is internationallyx000D
recognized for their specialization in condition monitoring of rotating machines. The focus of their activitiesx000D
has been mostly on rotating machines that are part of an electric power system installed at the ground level. Thex000D
proposed research will enable the study and investigation required to expand the PD detection and analysisx000D
methods developed by IRIS to the case of motors employed in 'more-electric' aircraft. The main objective of thex000D
proposed research is to initiate a collaboration between University of Manitoba's McMath High Voltage Labx000D
and IRIS Power that will enable IRIS Power to expand the applicability of their techniques to PD detection andx000D
analysis at high altitudes and low air pressure for monitoring modern 'more-electric' aircraft and extend thex000D
scope of their activities to aeronautic industry.