High power DC electronic load

This paper introduces the working principle and function of high power DC electronic load. Starting from the main circuit of the electronic load, this paper expounds the structure of electronic load and the idea of subsection load control, discusses the PWM control principle of IGBT, and designs the control algorithm. This load used 32-bit microcontroller STM32F207 as the core processor, with control algorithm of the combination of software and hard ware as a research strategy, and realized constant power, constant current, constant voltage and constant resistance mode. After testing and field operation, the DC electronic load is stable, high precision and fast response.