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Analysis and design of a novel six-switch five-level active boost neutral point clamped inverter

Accepted version
Peer-reviewed

Type

Article

Change log

Abstract

This paper presents an analysis and design of a new boost type six-switch five-level Active Neutral Point Clamped (ANPC) inverter based on switched/flying capacitor technique with self-voltage balancing. Compared to major conventional 5-level inverter topologies, such as, Neutral Point Clamped (NPC), Flying Capacitor (FC), Cascaded Hbridge (CHB) and Active NPC (ANPC) topologies, the new topology reduces the dc-link voltage requirement by 50%. Whilst reducing the dc-link voltage requirement, the number and the size of the active and passive components are also reduced without compromising the reactive power capability. The analysis shows that the proposed topology is suitable for wide range of power conversion applications (for example, rolling mills, fans, pumps, marine appliances, mining, tractions, and most prominently grid-connected renewable energy systems). Experimental results from a 1.2- kVA prototype justifies the concept of the proposed inverter with a conversion efficiency of around 97.5% ± 1% for a wide load range.

Description

Keywords

Switches, Inverters, Topology, Capacitors, Stress, Switching frequency, Multilevel converters, Active-neutral-point clamped (ANPC) inverter, flying capacitor (FC), multilevel inverter, pulsewidth modulation (PWM)

Journal Title

IEEE Transactions on Industrial Electronics

Conference Name

Journal ISSN

0278-0046
1557-9948

Volume Title

67

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Rights

All rights reserved