Research Of VIENNA Rectifier Based On One-Cycle-Control

In this dissertation, a research of VIENNA rectifier based on One-Cycle-Control(OCC) has been done, aiming at the high standard requirement of power electronic equipment; The OCC-VIENNA rectifier has the advantages of less switches, low voltage stress on power device, fast current loop response, three-level feature, low harmonic, simple control structure, no need of input voltage sensing and no dead-zone time;etc. First, it introduces the operational principle as well as the topology of VIENNA rectifier; A mathematical model of controlled voltage(current) source based on equivalent switching function is built and the OCC-APFC technique is introduced at the same time. A stability conditions of OCC-APFC is given based on the subharmonic oscillation phenomena in Peak-Current-Mode control. Secondly, according to the OCC-APFC technique, three operating modes are described combining with the VIENNA rectifier mathematical model of controlled voltage source. They are three-phase-independent mode, decoupling mode of dual-boost in series and three-phase-four-wire mode. Especially, the algorithm of decoupling mode is given in detail and a analytic demonstration about the output Middle-Point-Balanced problem of three-phase-independent mode is proved, which is combined with the VIENNA rectifier mathematical model of controlled current source. Based on the theory analysis, a controller is presented by the combination of IR1155S, a OCC-APFC analog IC. Then, the hardware is designed and a prototype is presented as well as the estimation of electrical loss and the thermal design. Finally, the simulation has been done to proved the theories and the prototype experiment has also been done for a attempt.