Indirect current control of a single-phase voltage-sourced boost-type bridge converter operated in the rectifier mode

An H-bridge transistorized converter intended for front-end power conversion at a high power-factor and a constant desired output voltage has been analyzed. The state-space model of the H-bridge converter controlled by the bipolar pulse width modulated (PWM) technique is described and the expressions for the equilibrium points of operation of the state variables corresponding to the circuit parameters have been derived. The converter is intended for use as a voltage source feeding an inverter. Hence the requirement of maintaining a desired DC voltage at its output becomes necessary. Transient behavior of two control strategies have been tested to examine their performance in stabilising the converter at the desired operating state. Comparison of the two feedback strategies has been done by simulation studies and the one that was found superior has been experimentally implemented. The experimental implementation of the controller for the converter operation in the rectifier mode is also described. The experimental results obtained are presented and compared with simulation results to validate the controller's performance under transient conditions.

[1]  Donald W. Novotny,et al.  Current Control of VSI-PWM Inverters , 1985, IEEE Transactions on Industry Applications.

[2]  G. K. Dubey,et al.  Series equivalence/operation of current-controlled boost-type single-phase voltage source converters for bidirectional power flow , 1997 .

[3]  R. Wu,et al.  A PWM AC to DC converter with fixed switching frequency , 1988, Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting.

[4]  Tore Undeland,et al.  Power Electronics: Converters, Applications and Design , 1989 .

[5]  A. F. Wick,et al.  Design and Experimental Results of a Brushless AC Servo Drive , 1984, IEEE Transactions on Industry Applications.

[6]  Russel J. Kerkman,et al.  A New Synchronous Current Regulator and an Analysis of Current-Regulated PWM Inverters , 1986, IEEE Transactions on Industry Applications.

[7]  Boon Teck Ooi,et al.  A Three-Phase Controlled-Current PWM Converter with Leading Power Factor , 1987, IEEE Transactions on Industry Applications.

[8]  Boon-Teck Ooi,et al.  A single-phase controlled-current PWM rectifier , 1988 .

[9]  Philip T. Krein,et al.  On the use of averaging for the analysis of power electronic systems , 1989 .

[10]  Ramesh Oruganti,et al.  A unity power factor converter using half-bridge boost topology , 1998 .

[11]  David A. Torrey,et al.  Single-phase active power filters for multiple nonlinear loads , 1995 .

[12]  G. K. Dubey,et al.  Current-controlled boost-type single-phase voltage source converters for bidirectional power flow , 1997 .

[13]  Hebertt Sira-Ramírez,et al.  An experimental comparison of several nonlinear controllers for power converters , 1999 .