Symmetry of the front stage of high-frequency inverter

What is a high frequency inverter?

In many applications, it is important for an inverter to be lightweight and of a relatively small size. This can be achieved by using a High-Frequency Inverter that involves an isolated DC-DC stage (Voltage Fed Push-Pull/Full Bridge) and the DC-AC section, which provides the AC output.

Can a single-stage high-frequency-isolated three-phase inverter achieve buck-boost DC/AC?

This study proposes a single-stage high-frequency-isolated three-phase four-leg inverter with an unbalanced load, which achieves buck–boost DC/AC conversion and eliminates the electrolytic capacitors.

What happens if a three-phase inverter has /y0 transformer?

A similar condition also happens on the three-phase inverter with Δ/Y0 transformer and three-phase four-wire inverter with neutral formed transformer, whose power density significantly decreases owing to the power frequency transformer despite the ability to deal with unbalanced load.

How to increase power density of a three-phase four-leg inverter?

To increase the power density of the traditional three-phase four-leg inverter with power frequency isolation, this study proposes a single-stage isolated three-phase four-leg inverter. To ensure the symmetry of three-phase output voltages, the proposed converter provides the path for neutral current resulted by the unbalanced load.

What is a single-stage isolated three-phase four-leg inverter?

single-stage isolated three-phase four-leg inverter and its modified 3D-SVPWM algorithm are proposed in this study. The converter achieves high-frequency electrical isolation and buck– boost DC/AC conversion as well with a single-stage structure. In addition, the converter provides the path for neutral current and

Which power supply topologies are suitable for a high frequency inverter?

The power supply topologies suitable for the High-Frequency Inverter includes push-pull, half-bridge and the full-bridge converter as the core operation occurs in both the quadrants, thereby, increasing the power handling capability to twice of that of the converters operating in single quadrant (forward and flyback converter).