A PYTHON-BASED SIMULATION AND EMBEDDED IMPLEMENTATION OF SPACEVECTOR PULSE WIDTH MODULATION ON STM32 CONTROLLERS

Abstract

This paper presents a detailed approach to developing and validating the space-vector pulse width modulation technique using the Python programming environment. The proposed simulation framework is implemented entirely in Python scripts and models a two-level, three-phase voltage-source inverter. It includes essential functions such as Clarke and Park transformations, sector determination, and duty cycle computation based on vector time decomposition. Unlike traditional simulation tools that rely on graphical user interfaces, the script-based method offers greater transparency and control over algorithmic implementation, enabling users to better understand each computational step involved in pulse generation. Although this approach may be less familiar to users accustomed to commercial block-diagram environments, it enhances comprehension of modulation principles and inverter behavior. Additionally, the Python script is designed with portability in mind, allowing straightforward conversion into embedded C code for real-time execution on STM32G431 microcontrollers. Experimental results confirm that the proposed method offers fast simulation times and reduced code complexity compared to conventional simulation tool chains.