PROJECT TITLE :

Model AC-AC Converter With Controllable Phase and Amplitude - 2017

ABSTRACT:

Based on cascaded ac-ac converter with controllable section and amplitude (ACCPA), a unique p model ACCPA was proposed for power flow management, whose output voltage part and amplitude can be regulated, respectively, and simultaneously with respect to the input voltage. Single-part p model ACCPA includes a buck-kind ac unit, a 3rd harmonic trap and a lift-kind ac converter. Compared with single-phase cascaded ACCPA, it's a more simplified structure by dispensing with the LC output filter of the buck-kind ac converter, and can adopt the identical two-stage duty-cycle modulation. The buck-sort ac unit regulates the phase of output voltage and also the boost-sort ac converter will the amplitude. By utilizing impedance compensation with capacitance in single-phase p model ACCPA, it is effective to counteract or scale back the lag effect that is put on elementary voltage by line impedance of third harmonic trap and inductance. 3-part p model ACCPA comprises three buck-type ac units and a 3-phase boost-kind ac converter, it not only dispenses with 3 LC output filters, but conjointly will three third harmonic traps, thus it has simple structure. Experimental results verified the feasibility of p model ACCPA and also the correctness of its theory.