单级变匝比高频链并网逆变器

In this paper, a technique of variable-turns-ratio high-frequency link inverter is proposed to provide a simple method to achieve multi-level outputs for the isolated single-stage high-frequency link inverters. By dynamically adjusting the turns ratio of transformer, five-level (±2, ±1, and 0) outputs can be achieved to improve the current quality. The single transformer, compared with the existin...