Hysteresis Control of Permanent Magnet BLDC Motor Using FOPI Controller as Speed Regulator

Abstract

In this study, an effort has been made to examine the dynamics of speed control and current regulation of brushless DC (BLDC) motor. The motor hysteresis current control technology uses fractional order proportional integral(FOPI) controller to regulate motor's speed. Additionally, the fact that we will be using a FOPI controller rather than a standard PI controller will result in an increase in the robustness of the system and a reduction in settling time. Both the duty-cycle controlled voltage PWM approach and the hysteresis current control technique are able to be considered the primary current control techniques utilized in the BLDC motor driving. In order to achieve quick dynamic response during transitional stages FOPI controller is used along with hysteresis current control loop. From the extensive simulation results verify the efficacy of the developed FOPI controller is used along with hysteresis current control loop.