Research on Hardware Circuit Design of Hub Motor Drive Controller for New Energy Vehicles Based on STM32

Guided by the objectives of the "dual carbon" initiative, new energy vehicles have emerged as a pivotal focus in the global transformation of the automotive industry. As a critical component of the powertrain system, the real-time performance and reliability of hub motor drive control significantly influence vehicle dynamics and safety. This research presents the design of a comprehensive hub motor driver hardware circuit centered on the STM32F407GZT6 microcontroller. The design encompasses power conversion through multi-stage voltage regulation, a minimal STM32 system, a three-phase inverter power stage, high-precision signal acquisition, CAN communication, and protection modules addressing overcurrent, overvoltage, and overtemperature conditions. The implementation of multi-stage voltage regulation ensures a stable power supply, while optocoupler isolation effectively segregates high-and low-voltage circuits, thereby enhancing electromagnetic interference resistance and operational reliability within the complex vehicular electromagnetic environment. This approach offers a robust and dependable hardware framework conducive to the advancement of power systems in new energy vehicles, promoting the integration and refinement of hub motor technologies.