Here, when operating 24 hours a day, the power switch lifetime will be less than 5 years. In ASML’s lithography machines, the wafer stage moves at up to 10Hz with very high speed and acceleration, creating up to 25☌ of temperature swing. Assuming the city bus runs 12 hours/day and stops every 2.5 minutes, the power switch will last less than 10 years due to these temperature swings. One of the failure mechanisms of power switches is ageing failure due to temperature variations, which typically takes several years to happen.įor instance, in a fully electric city bus, the power switch cools down at every stop and heats up when accelerating, which generates a temperature swing of up to 50☌. The power switch is one of the most vulnerable components therefore, the lifetime of these devices significantly influences the reliability or availability of power electronics converters.
In recent years, an increasing number of power switches have been incorporated in power converters (e.g., converters used for operating the wafer stage in ASML lithography machines or supplying MRI scanners) to increase the processed power and output accuracy.
#Power converter portable#
With the increasing pace of global electrification, power electronic converters penetrate further into a wide range of applications, such as automotive, smart grids, traction, renewable energy, aerospace, healthcare and portable equipment.
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