Journal of Electrical & Electronic Systems

S. Sridhar Krishna

Publications

• Research Article
  A New Approach for Torque Ripple Minimization in Brushless DC Motor Using SEPIC Converter
  Author(s): S. Sridhar Krishna and B. Mahesh KumarS. Sridhar Krishna and B. Mahesh Kumar
  
  Brushless DC Motors (BLDCM) are widely used in automated industrial applications like Computer Numerical Control (CNC) machinery, aerospace applications and in the field of robotics. But it still suffers from commutation torque ripple, which mainly depends on speed and transient line current in the commutation interval. This work presents a new circuit topology and a DC link voltage control strategy to keep incoming and outgoing phase currents changing at the same rate during commutation. A Single-Ended Primary Inductor Converter (SEPIC) and a switch selection circuit are employed in front of the inverter. The desired commutation voltage is accomplished by the SEPIC converter. The cause of commutation ripple is analyzed, and the way to obtain the desired DC link voltage is introduced in detail. Finally, simulation results show that, compared with the DC-DC converter, the proposed meth.. Read More»
  DOI: 10.4172/2332-0796.1000106

  Abstract PDF