A Family of 5-Level Boost-Active Neutral-Point-Clamped (5L-BANPC) Inverters with Full DC-Link Voltage Utilization Designed Using Half-Bridges

A Family of 5-Level Boost-Active Neutral-Point-Clamped (5L-BANPC) Inverters with Full DC-Link Voltage Utilization Designed Using Half-Bridges

Blog Article

Conventional 5-level active neutral-point-clamped (5L-ANPC) topology and state-of-the-art 5-level hybrid active neutral-point-clamped (5L-HANPC) topology are popular for here inverter applications.However, their dc-link voltage utilization is limited to only 50%.With the maximum voltage level generated by only half dc-link voltage, these inverters are not capable of boosting voltage in their ac output.

To resolve these drawbacks, this paper proposes a family of four novel 5-level boost-active neutral-point-clamped (5L-BANPC) inverters.Without requiring any flying capacitors, the proposed topologies can generate five voltage levels by effectively using the dc-link capacitors.The dc-link voltage utilization of the proposed 5L-BANPC inverters is twice that of the 5L-ANPC and 5L-HANPC topologies.

While generating the five-level ac output voltage, natural voltage balancing of both dc-link capacitors and voltage boosting are achieved.Ease of implementation is another noteworthy merit of the proposed 5L-BANPC inverters because they can be implemented using six widely available commercial half-bridge modules without requiring a dedicated click here circuit design.The operation of the proposed topologies is analyzed.

Experimental results are presented for verification.