A Cascaded Hybrid Multilevel Inverter Incorporating a Reconfiguration Technique for Low Voltage DC Distribution Applications

Surin Khomfoi

A Cascaded Hybrid Multilevel Inverter Incorporating a Reconfiguration Technique for Low Voltage DC Distribution Applications

Surin Khomfoi

Vol. 16, No. 1, pp. 340-350, Jan. 2016

10.6113/JPE.2016.16.1.340

Cascaded hybrid inverter

Cascaded multilevel inverter

DC microgrid

Low Voltage DC Distribution

PWM paradigm

Reconfiguration technique

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Abstract

A cascaded hybrid multilevel inverter including a reconfiguration technique for low voltage dc distribution applications is proposed in this paper. A PWM generation fault detection and reconfiguration paradigm after an inverter cell fault are developed by using only a single-chip controller. The proposed PWM technique is also modified to reduce switching losses. In addition, the proposed topology can reduce the number of required power switches compared to the conventional cascaded multilevel inverter. The proposed technique is validated by using a 3-kVA prototype. The switching losses of the proposed multilevel inverter are also investigated. The experimental results show that the proposed hybrid inverter can improve system efficiency, reliability and cost effectiveness. The efficiency of proposed system is 97.45% under the tested conditions. The proposed hybrid inverter topology is a promising method for low voltage dc distribution and can be applied for the multiple loads which are required in a data center or telecommunication building.

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Cite this article

[IEEE Style]

S. Khomfoi, "A Cascaded Hybrid Multilevel Inverter Incorporating a Reconfiguration Technique for Low Voltage DC Distribution Applications," Journal of Power Electronics, vol. 16, no. 1, pp. 340-350, 2016. DOI: 10.6113/JPE.2016.16.1.340.

[ACM Style]

Surin Khomfoi. 2016. A Cascaded Hybrid Multilevel Inverter Incorporating a Reconfiguration Technique for Low Voltage DC Distribution Applications. Journal of Power Electronics, 16, 1, (2016), 340-350. DOI: 10.6113/JPE.2016.16.1.340.