In this paper, a new topology for a two-quadrant converter is presented. In the AC/DC transfer mode, the converter works as a rectifier with near sinusoidal input currents (RNSIC), while in the DC/AC transfer mode it works as a square-wave pulse switching inverter. We offer some suggestions for the converter design and realize a comparison with a two-quadrant PWM converter. The new converter is characterized by smaller power losses, reduced EMI problems and higher reliability

The paper presents a single-phase direct AC-AC boost converter. The circuit of the converter is simple and it has good performances, irrespective of the load nature. The adequate functioning and high performance of the circuit (the efficiency and waveform of the absorbed input current) were tested both by simulation and experimentally

This paper introduces a novel, high-accuracy method for determining the output voltage ripple in DC–DC converters. For the buck converter, the proposed approach enables accurate ripple estimation even under discontinuous conduction mode (DCM) operation. In the case of boost and buck–boost converters, this method not only facilitates ripple calculation in DCM but also enhances accuracy in continuous conduction mode (CCM), particularly near the transition boundary between CCM and DCM. The validity of the proposed method has been confirmed through both simulations and experimental measurements, with excellent agreement observed among theoretical, simulated, and experimental results.

The study proposes and analyses a new circuit of direct AC–AC converter that can perform a bidirectional energy flow. The authors calculated the equations governing the functioning of the circuit. The adequate functioning and high performance of the circuit (the efficiency and waveform of the absorbed input current) were tested both by simulation and experimentally.

This paper introduces and studies a boost AC-AC converter circuit that can be used to supply power to the 220V receivers in the 110V grids or to increase and adjust voltage at the end ...

The paper presents two high-performance single-phase AC chopper circuits which perform AC-AC bidirectional direct conversion;one of them contains resistive loads and the other one is for inductive loads. It includes useful equations for chopper design. The correctfunctioning is tested by simulation.DOI: http://dx.doi.org/10.5755/j01.eee.18.10.1305