New three-port DC-AC inverter outputting a single-phase and a set of three-phase AC voltages

A conventional DC-AC inverter can only output either a single-phase AC voltage or a set of three-phase AC voltages. A new three-port DC-AC inverter which can simultaneously output a single-phase AC voltage and a set of three-phase AC voltages is proposed in this paper. This three-port DC-AC inverter...

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Bibliographic Details
Published in:International journal of electronics 2018-11, Vol.105 (11), p.1962-1975
Main Authors: Jou, Hurng-Liahng, Wu, Jinn-Chang, Wu, Kuen-Der, Shen, Hong-Ren
Format: Article
Language:English
Subjects:
Capacitors
Dc-ac inverter
Decoupling
Electric converters
Electric potential
Legs
Power converters
Preventive maintenance
t-type multi-level power power electronic leg
three-port
Transformers
Truck drivers
zero-sequence transformer
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Summary:A conventional DC-AC inverter can only output either a single-phase AC voltage or a set of three-phase AC voltages. A new three-port DC-AC inverter which can simultaneously output a single-phase AC voltage and a set of three-phase AC voltages is proposed in this paper. This three-port DC-AC inverter is based on the three-port T-type multi-level power converter which is composed of three T-type power electronic legs, a decoupling transformer set, a filter inductor set, a single-phase filter capacitor, and a three-phase filter capacitor set. The DC port of the proposed power converter is connected to a DC power source to act as the input port, and the single-phase AC port and the three-phase AC port serve as two output ports to supply power to the single-phase load and the three-phase load, respectively. The zero-sequence transformer is used to decouple the single-phase and three-phase AC components, which are generated by the three T-type power electronic legs. The operation principle of this three-port DC-AC inverter is analyzed, and a hardware prototype is established to verify the performance of the proposed three-port DC-AC inverter. The experimental results are as expected.
ISSN:0020-7217
1362-3060
DOI:10.1080/00207217.2018.1494326