Call For Paper Volume:4 Issue:10 Oct'2017 |

Sensorless control of BLDC motor based on Hysteresis comparator with PI control for speed regulation

Publication Date : 30/01/2016



Author(s) :

Thirumoni.T , Femi.R.


Volume/Issue :
Volume 3
,
Issue 1
(01 - 2016)



Abstract :

Now a days, road vehicles and medical applications are more equipped with permanent magnet synchronous motors. Particularly interesting are brushless dc (BLDC) motors, which, due to their inherently sensorless operation, are considered as viable candidates in large scale production industries such as the automotive one. Within this trend, this paper deals with the synthesis and implementation of a novel sensorless control strategy dedicated to the control of BLDC motor drives. Compared with the most recent and highly performed strategy, the proposed one offers improved reliability due to the achievement of balanced switching frequencies of the inverter upper and lower insulated-gate bipolar transistors, on one hand, and the reduction in the average value of the motor common mode voltage, on the other hand. Furthermore, the torque ripple is significantly damped during sector-to-sector commutations using a three-level hysteresis torque controller. An experientially based comparative study of the most recent and highly performed sensorless control strategy from one side and the closed loop speed control is achieved by using PI controller. This project is implemented in matlab simulation.


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Sensorless control of BLDC motor based on Hysteresis comparator with PI control for speed regulation

January 30, 2016