Electromagnetic Compatibility (EMC) Analysis for e-Motors and Controllers of Electric Two-Wheelers

The Indian government has been promoting electric vehicles through various policy initiatives, such as offering incentives and subsidies to EV manufacturers and consumers, establishing charging infrastructure across the country, and setting ambitious targets for EV adoption. These measures aim to reduce the dependence on imported fossil fuels, mitigate air pollution, and promote sustainable mobility. As a result, the demand for electric vehicles across India is steadily increasing, and the country is emerging as a lucrative market for EVs globally. An electronically commuted brushless DC (BLDC) motor usually functions for traction in electric two-wheelers. Electric vehicles need to comply with electromagnetic compatibility (EMC) requirements. During the EMC compliance of electric two-wheelers, it is certain that the BLDC motor and its controller play an important role. This paper presents the BLDC motor and controller’s Radiated Emission (RE) performance at Electronic Sub-Assembly (ESA) level at different e-motor loading conditions and test setup cases. This study will help OEMs and motor and controller manufacturers to understand the broader spectrum of EMC behavior of electric drive trains of two-wheeler vehicles during the pre-validation or validation phase of the component.