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Reseach Article
A FUZZY based DSP Implementation for Power Quality Improvement of a three phase AC-AC Converter
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 1 - Number 24 |
| Year of Publication: 2010 |
| Authors: N.Radhakrishnan, M.Ramaswamy |
10.5120/557-734
|
N.Radhakrishnan, M.Ramaswamy . A FUZZY based DSP Implementation for Power Quality Improvement of a three phase AC-AC Converter. International Journal of Computer Applications. 1, 24 ( February 2010), 49-55. DOI=10.5120/557-734
Abstract
This paper proposes the use of a fuzzy logic controller (FLC) that serves to enhance the power quality of a three phase ac-ac converter system with a dc link. The FLC is designed so as to shape the load current to a nearly sinusoidal fashion and contribute in improving the input power factor, lowering the total harmonic distortion (THD) and eliminating higher order harmonics. The Digital Signal Processor (DSP), besides generating the PWM gating pulses for the power switches, is programmed to function as PI/FUZZY controller in the feedback loop. The algorithm allows the modulation index to vary, in order to regulate the load voltage. Simulation and experimental results are included to highlight the fact that the scheme also enables to maintain a constant output voltage over a wide range of load variations,
References
- A.Kernick, D.L.Stechschulte, and D.W.Shireman, “Static inverter with synchronous output waveform synchronized by time-optimal response feedback,” IEEE trans. on IECL, vol. 24, no. 4, pp. 197-305, 1977.
- Y.Sekino, M.Shibata, and N.Hotaka, “Inverter output voltage waveform closed-loop control technique,” INTELEC Tokyo, pp. 205-212.Oct. 1983.
- A.Kawamura, R.Hoft, “Instantaneous feedback controlled PWM inverter with adaptive hysteresis,” IEEE trans. on Ind. Appli., vol. 20, no. 4, pp. 769-775, 1984.
- M.Carpita, M.Mazzucchelli, S.Savio, and G.Sciutto, “A new PWM control system for UPS using hysteresis comparator,” IEEE CH2499-2, pp. 749-754, 1987.
- B.K.Bose, Editor, Microcomputer Control of Power Electronics and Drives, IEEE Press. 1987.
- Y.Dote, Servo Motor and Motion Control Using Digital Signal Processors, Prentice Hall and Texas Instruments Digital Signal Processing Series, 1980.
- Han-Ju Cha, et al, “Real-time digital control of PWM inverter with PI compensator for uninterruptible power supply,” Int. Conf. Ind. Electronics Contr. and Inst., vol. 2, pp. 1125-1128, 1990.
- C.Hua, and R.G.Hoft, “High performance deadbeat controlled PWM inverter using a current source compensator for nonlinear loads,” IEEE Power Electron. Speacialists’ ConfRec., pp. 443-450, 1992.
- S.L.Jung and Y.Y.Tzou, “Sliding mode control of a closed-loop regulated PWM Inverter under large load variations,” IEEE Power Electron. Speacialists’ ConfRec., June 1993.
- Ovidiu Pop, Gabriel Chindris, Andrei Dulf, “Using DSP technology for true sine PWM generators for power inverters”, IEEE 27th Int’l spring seminar on electronics technology, pp.141-146, 2004.
- A.Muthuramalingam, S.V.Vedula and P.A.Janakiraman, “Performance evaluation of an FPGA controlled soft switched inverter”, IEEE trans. on Power Electronics, vol.21, no.4, pp.923-932, July 2006.
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