Sensorless Control of Four-Switch Inverter for Brushless DC Motor Drive and Its Simulation

DOI: 10.4236/cs.2016.76062   PDF   HTML     2,155 Downloads   3,174 Views   Citations


The major function of this proposed research is to control the speed of the brushless DC motor with sensor less control for four-switch three phase inverter. This proposed system is simplified the topological structure of the conventional six-switch three phase inverter. In this proposed method, a new structure of four-switch three phase inverter [1] with reduced number of switches for system is introduced to reduce the mechanical commutation, switching losses that occur in the six-switch method. The proposed inverter fed brushless DC motor used in sensorless control schemes which is used for sensing positioning signals. To improve sensor less control performance, four-switch electronic commutation modes based proportional intergral controller scheme is implemented. In this four-switch three phase inverter reduction of switches, low cost control and saving of hall sensor were incorporated. The feasibility of the proposed sensor less control four-switch three phase inverter fed brushless DC motor drive is implemented, analysed using MATLAB/SIMULINK, effective simulation results have been validated out successfully.

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Shanmugam, S. , Ramachandran, M. , Kanagaraj, K. and Loganathan, A. (2016) Sensorless Control of Four-Switch Inverter for Brushless DC Motor Drive and Its Simulation. Circuits and Systems, 7, 726-734. doi: 10.4236/cs.2016.76062.

Conflicts of Interest

The authors declare no conflicts of interest.


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