Electrification continues to be a defining trend in the automotive industry. Regulatory pressure and long-term sustainability goals are the driving force behind heavy investments into alternatives to internal combustion engines (ICE), with many regions around the world targeting to drastically reduce ICE sales by 2035. Electric motors, particularly those in e-axle architectures, are quickly becoming the center of modern drivetrain design. They are also widely used in other configurations such as hybrid modules, inboard motor layouts, range extending applications and electric all-wheel drive systems.

As these architectures evolve to deliver more power in smaller, higher output packages, they present a new set of engineering challenges. Packing more output into a tighter space might reduce weight and improve overall efficiency, but it can also increase thermal mechanical stress and electromagnetic interference (EMI). These issues directly affect motor components, such as rotor position sensors. Sensor performance affected by EMI can compromise accuracy, leading to incorrect data being sent to the vehicle’s control system and reduced overall vehicle performance. Among the available rotor position sensing technologies, resolvers are often favored for their inherent resistance to EMI and ability to deliver stable, accurate feedback even in these demanding environments.