# A Simple Control Strategy Technique for a Single-phase Bridgeless Active Rectifier with High Power Factor and Voltage Stabilization Using Partial Digital Implementation

## Abstract

A partial digital implementation approach to improve the power factor of single-phase rectifiers and to regulate the output voltage against the change in line voltage and load is presented in this paper. A two-leg configuration, which has single IGBT in each leg, is adopted to reduce the number of switching devices compared with conventional AC–DC converter. This converter topology is evaluated on the basis of performance, and its salient features such as simplicity, low cost, and high performance are discussed to analyze its applicability. The proposed control strategy using continuous switching pulse width modulation (CSPWM) is bridgeless and transformer-less. A control technique and operational procedure are also developed, both theoretically and experimentally. The experimental results clearly verify the theoretical analysis from the prototype connected to grid unity.

### Keywords

Active rectifier (AC–DC) Boost rectifiers Continuous switching pulse width modulation (CSPWM) Power factor Single phase Voltage regulation### References

- 1.Z. Yang, P.C. Sen, Recent developments in high power factor switch mode converters, in
*IEEE Proceedings CECE.98*(1998), pp. 477–480Google Scholar - 2.R.W. Erickson, S. Cuk, R.D. Middlebrook, Large-signal modelling and analysis of switching regulators, in
*Proceedings IEEE PESC’82*(1982), pp. 240–250Google Scholar - 3.R. Erickson, M. Madigan, S. Singer, Design of a simple high-power-factor rectifier based on the flyback converter, in
*Proceedings IEEE APEC’90*(1990), pp. 792–801Google Scholar - 4.D. Simonetti, J. Sebastian, J. Uceda, A small-signal model for sepic, Cuk, and flyback converters as power factor pre-regulators in discontinuous conduction mode, in
*Proceedings IEEE PESC’93*, pp. 735–741 (1993)Google Scholar - 5.I.F. Schlecht, B.A. Miwa, Active power factor codon for switching power supplies. IEEE Trans. P.E.
**2**(4), 273–281 (1987)CrossRefGoogle Scholar - 6.M. Kazerani, P.D. Ziogas, G. Joos, A novel active c-t wave shaping technique for solid-state input power factor conditioners. IEEE Trans. Ind. Electron.
**38**(1), 72–78 (1991)CrossRefGoogle Scholar - 7.A.R. Rasad, P.D. Ziogas, S. Manias, A novel passive wave shaping method for single-phase diode rectifiers. IEEE Trans. Ind. Electron.
**37**(6), 521–530 (1990)CrossRefGoogle Scholar - 8.R. Itoh, K. lshizaka, Single-phase sinusoidal convertor using MOSFETS. IEE PIOC
**136**(5), 237–242 (1989)Google Scholar - 9.A.W. Green, J.T. Boys, Cumnt forced single-phase reversible rectifier. IEE PIOC
**136**(5), 205–212 (1989)Google Scholar - 10.W.M. Grady, M.J. Samotyj, A.H. Noyola, Survey of active power line conditioning methodologies. IEEE Trans. Power Delivery
**5**, 1536–1542 (1990)CrossRefGoogle Scholar - 11.B. Singh, B.N. Singh, A. Chandra, A. Pandey, A review of single-phase improved power quality AC–DC converters. IEEE Trans. Ind. Elect.
**50**(5), 962–981 (2003)Google Scholar - 12.J.W. Kolar, U. Drofenik, F.C. Zach, VIENNA rectifier II-a novel single-stage high-frequency isolated three-phase PWM rectifier system. IEEE Trans. Ind. Electron
**46**(4), 674–691 (1999)Google Scholar - 13.A.D. Pathak, R.E. Locher, H.S. Mazumdar, 3-phase power factor correction using vienna rectifier approach and modular construction for improved overall performance, efficiency and reliability. Power electronics conference in long bench (2003)Google Scholar
- 14.J. Kolar, F. Zach, A novel three phase utility interface minimizing line current harmonics of high power telecommunication rectifier modules. IEEE Trans. Ind. Electron.
**44**(4), 456–467 (1997)Google Scholar - 15.D.C. Lee, D.S. Lim, AC voltage and current sensorless control of three-phase PWM rectifiers. IEEE Trans. Power Electron.
**17**(6), 883–890 (2002)Google Scholar - 16.H.W. Van Der Broeck, H.-C. Skudelny, G.V. Stanke, Analysis and realization of a pulsewidth modulator based on voltage space vector. IEEE Trans. Ind. Appl.
**24**(1) (1988)Google Scholar - 17.M.K. Smedley, S. Cuk, One cycle control of power converters. IEEE Trans. Power Electron,
**10**(6), 625–633 (1995)Google Scholar - 18.Y. Chen, K.M. Smedley, One-cycle-controlled three-phase grid connected inverters and their parallel operation. IEEE Trans. Ind. Appl.
**44**(2), 663–671 (2008)Google Scholar - 19.C. Yang, K.M. Smedley, Parallel operation of one-cycle controlled three-phase PFC rectifiers. IEEE Trans. Ind. Electron.
**54**(6), 3217–3224 (2007)CrossRefGoogle Scholar - 20.D. Ghodke, K. Chattarjee, Modified one cycle controlled bidirectional high-power-factor AC-to-DC converter. IEEE Trans. Ind. Electron.
**55**(6), 2459–2472 (2008)CrossRefGoogle Scholar - 21.D. Ghodke, E.S. Shreeraj, K. Chattarjee, B.G. Farnandis, One-cycle controlled bi-directional Ac–Dc converter with constant power factor. IEEE (2008)Google Scholar
- 22.D.V. Ghodke, E.S. Shreeraj, K. Chatterjee, B.G. Fernandes, One cycle controlled bi-directional Ac to Dc converter with constant power factor, in Proceedings IEEE Power Electronics Specialist Conference (2008)Google Scholar
- 23.M. Barbati, C. Caluisi, C. Cecati, One-cycle controlled active rectifier for full digital implementation, in
*Proceedings IEEE*(2010)Google Scholar