• Rajesh Khanna Bhuthukuri
• Dr.Poonam Upadhyay

The DPC (Direct Power Control) with switching table control and variable switching frequency produces severe irregular ripples. In duty cycle concept based DPC (Direct Power Control) of PWM rectifiers the application of active voltage vector for fractional period and the rest period by the null vector not only makes it line side inductance independent of the circuit and is very simple to implement. In the simulation it is observed that the level of distortion as well as regulation of the DC link voltage with control of power factor improves the overall performance. The duty cycle concept based DPC PWM methodology is comprehensively analysed for three phase rectifiers. The performance analysis is carried out in MATLAB/Simulink environment, the results of simulations indicate the effectiveness in obtaining UP) (Unity power factor) and constant dc link voltage control. Sinusoidal input grid currents are obtained with considerably reduced power ripples.

Direct power control, pulse width modulation, duty cycle, dc link control, instantaneous active and reactive power, unity power factor

"Direct Power Control Of Three Phase Pwm Rectifier Based On Duty Cylce Approach", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.190-197, May-2019, Available :http://www.jetir.org/papers/JETIRBM06030.pdf

"Direct Power Control Of Three Phase Pwm Rectifier Based On Duty Cylce Approach", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp190-197, May-2019, Available at : http://www.jetir.org/papers/JETIRBM06030.pdf