Time-division-multiplex control scheme for voltage multiplier rectifiers

Abstract

A voltage multiplier rectifier with a novel time-division-multiplexing (TDM) control scheme for high step-up converters is proposed in this study. In the proposed TDM control scheme, two full-wave voltage doubler rectifiers can be combined to realise a voltage quadrupler rectifier. The proposed voltage quadrupler rectifier can reduce transformer turn ratio and transformer size for high step-up converters and also reduce voltage stress for the output capacitors and rectifier diodes. An N-times voltage rectifier can be straightforwardly produced by extending the concepts from the proposed TDM control scheme. A phase-shift full-bridge (PSFB) converter is adopted in the primary side of the proposed voltage quadrupler rectifier to construct a PSFB quadrupler converter. Experimental results for the PSFB quadrupler converter demonstrate the performance of the proposed TDM control scheme for voltage quadrupler rectifiers. An 8-times voltage rectifier is simulated to determine the validity of extending the proposed TDM control scheme to realise an N-times voltage rectifier. Experimental and simulation results show that the proposed TDM control scheme has great potential to be used in high step-up converters.

Keywords

• rectifiers
• voltage multipliers
• bridge circuits
• time division multiplexing
• phase shifters
• time-division-multiplex control scheme
• TDM control scheme
• voltage multiplier rectifiers
• high step-up converters
• full-wave voltage doubler rectifiers
• voltage quadrupler rectifier
• transformer turn ratio
• voltage stress
• rectifier diodes
• N-times voltage rectifier
• phase-shift full-bridge converter
• PSFB converter