Performance Analysis of Open Loop and Closed Loop Control in BLDC Drives for Electrical Vehicle Applications
DOI:
https://doi.org/10.26438/ijcse/v6i4.231235Keywords:
BLDC motors, PI controller, Model Reference Adaptive Control (MRAC)Abstract
This paper deals with analysis implementation of open loop and closed loop speed control for a Brushless dc (BLDC) motor drive using Hysteresis and MRAC. Mostly BLDC drives are used for electrical vehicle applications. Generally control algorithms which are developed for the motor drive might show good simulation results during steady state and transient conditions. Model reference adaptive system is a control strategy to drive electrical machine. Conventional cascade PI controllers are often used to control speed, torque and current. Adaptive PI controller for speed and current of a low inertia machine, change in speed set point should be slowly applied in order avoid stability problem. Hysteresis current control is used to eliminate voltage stability problem. In order to improve the performance compare to hysteresis current control the new model reference adaptive system used in speed control block. So, here initially open loop and closed loop system of BLDC drive using hysteresis current control is simulated and results are verified, after that MRAC is introduced to analysis improvement and dynamic behaviour of system and performance are analysed using MATLAB/ SIMULINK software. Hardware implementation of open loop BLDC drive system performance is validated by using DSP processor. In this project detailed procedure of effectively controlled the BLDC drive real time is presented.
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