Inverter high frequency arm

What is the topology of HFAC inverter bridge arm?

A new topology of the high frequency alternating current (HFAC) inverter bridge arm is proposed which comprises a coupled inductor, a switching device and an active clamp circuit. Based on it, new single-phase and three-phase inverters are proposed and their operating states are analysed along with the traditional H-bridge inverter.

How effective is a coupled inductor bridge arm?

A coupled inductor bridge arm is integrated in them to achieve soft switching, electrical isolation, and structural flexibility. Their effectiveness is validated by experimental tests on a 400-W prototype. The traditional H -bridge inverter arm can generate outputs of 0 and ± Vin between the central node, as in Fig. 2a.

What is a HFAC inverter?

One critical component of HFAC systems is their front-end inverter, which converts DC to HFAC. A common topology for single-phase systems is the H -bridge [ 2] [see Fig. 1 a ], which is also refers to as the full bridge [ 10] or the buck inverter [ 11 ].

Why do we need a two-level inverter?

This approach effectively addresses the issues of voltage conversion by itself, excessive space occupation when separated from power frequency transformers (mobile substations), and the use of traditional two-level inverter output stages, which result in high harmonic content and poor waveform quality.