Without a combustion engine to mask unwanted noise, electric vehicles require greater emphasis on the design of powertrain components and subsystems for low noise emissions. Despite growing industrywide understanding of vehicle NVH, issues continue to arise for manufacturers and suppliers alike as they pursue greater powertrain efficiency as a remedy for consumer range anxiety.
Efficiency and NVH typically compete in the same design space. Rotor skew, gear tooth geometry, motor control and even fundamental ratio and slot/pole combinations are all driven by design trade-offs between NVH and efficiency. Demands for increased torque density and mass reduction add to the challenges. In this latest Research Review from Drive System Design we discuss the benefits of a system level approach to NVH reduction while optimising efficiency. To read the review in full please click on the image below