Fuzzy PID Control of Electric Vehicle Charging and Discharging System

Abstract

The speed regulation and stability control performance, mileage and battery life of new energy vehicles have an important impact on the development of electric vehicles. In order to analyze the impact of different discharge control strategies on the speed regulation, battery output voltage and capacity of electric vehicles, the battery discharge model is built by using MATLAB software. By simulating the starting, speed regulation and load changes of electric vehicles, it corresponds to three situations: constant speed starting, sudden change of speed during operation and sudden load, The traditional proportional integral differential controller (PID) and fuzzy PID control strategies are used to simulate and analyze the battery discharge. The results show that the control effect and accuracy of fuzzy PID controller on motor speed, speed regulation response speed and voltage output are better than those of traditional PID controller, which verifies the rationality and stability of the proposed fuzzy PID vector control.