• K KRISHNA SREENIVASULU

Generally our computer loads and systems are found in industries commercial and residential units. The nature of loads may destroy the line current wave forms and supply voltage wave forms. With these loads consisting of poor power quality and slow dynamic response, more total harmonic distortions. The voltage controller in the SMPS consist of PI controller, with the effect is that it has high starting over shoot, sensitivity to control the gain and sluggish response to sudden change in the system to reduce the difficulty level here is used to non isolated bridgeless buck-boost single ended primary inductance converter in discontinuous conduction mode at input side of SMPS. With fractional order PID controller at PFC and continuous space voltage regulation. The SEPIC with FOPID controller is provided constant output voltage for load changing and input voltage varies. The output of SMPS gets different output voltages and it multiplies dc to dc converter maintain the single output voltage and varies with all other output voltages. The design in simulation of bridgeless converter in total harmonic reduction by using FOPID controller can be verified.

"Simulation of Bridgeless Converter in Total Harmonic Reduction by using Fractional Order PID Controller", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 9, page no.26-31, September-2018, Available :http://www.jetir.org/papers/JETIR1809805.pdf

"Simulation of Bridgeless Converter in Total Harmonic Reduction by using Fractional Order PID Controller", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 9, page no. pp26-31, September-2018, Available at : http://www.jetir.org/papers/JETIR1809805.pdf