Analysis and design of a novel three-level dual-boost reversible PWM rectifier

A diode-clamped three-level dual-boost reversible PWM rectifier is proposed in this paper. As this topology is deduced from the dual-boost PWM rectifier, it inherits the merits of no hidden danger of shoot-through and no body diodes´ reverse recovery problems, which are the two main problems of the conventional half-bridge and full-bridge rectifiers. Thus, the proposed circuit has the advantages of high reliability and improved efficiency. In addition, compared with the dual-boost PWM rectifier, the voltage stresses of power switches reduce to half the output voltage, which helps to expand the usage of the proposed circuit to higher-voltage occasions. The hysteresis current controller is involved in the circuit control system to eliminate the loop-current. The operational principle, switching logics and design details of the important components are all deeply analyzed. Theoretic analysis is supported by the experimental results performed by a 1kW engineering prototype.