Interlinking converters in application of bipolar dc microgrids

Tavakoli, Saman Dadjo; Kadkhodaei, Gholamreza; Mahdavyfakhr, Mohammad; Hamzeh, Mohsen; Sheshyekani, Keyhan

doi:10.1109/pedstc.2017.7910387

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…Also, the proposed topologies in [18,19] cannot transfer power between output terminals. Some three-level (TL) converters with dual output are proposed in [4,6,[20][21][22][23][24][25][26][27][28][29][30][31][32] which are explained more as follows. The TL converters in [20][21][22][23] provide one output voltage that are not applicable in BDCMG.…”

Section: Introductionmentioning

confidence: 99%

“…The TL converters in [20][21][22][23] provide one output voltage that are not applicable in BDCMG. Other TL [24][25][26][27][28][29][30][31][32][33][34][35][36][37] and dualoutput converters [28][29][30]33], which are suitable for bipolar DC grid application, cannot transfer power between output terminals. Another dual-output converter is proposed in [34] which provides step-down and step-up voltage in output terminals, but it does not consider power transferring between output terminals.…”

Section: Introductionmentioning

confidence: 99%

“…Another dual-output converter is proposed in [34] which provides step-down and step-up voltage in output terminals, but it does not consider power transferring between output terminals. Also, circuits with voltage balancing capability are proposed in [4,6,31,32] which are designed for situation when the output terminals consume power. As a drawback, the balancers cannot guarantee power transferring between their input and output terminals, especially when power generation exists in one terminal of BDCMG.…”

Section: Introductionmentioning

confidence: 99%

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Dual‐output DC/DC boost converter for bipolar DC microgrids

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This study presents a new step-up DC/DC converter for bipolar DC microgrids. This relies on utilising a new converter topology which offers bipolar DC outputs with the key features of boosting the input voltage and balancing the output voltages. In addition, the proposed converter can transfer power from output terminals to the input side which leads to energy saving. Due to the microgrid's loading conditions, different modes can be considered, and the operational principles are analysed in details. Applying the circuit average method, the small signal model of the proposed converter is derived. Then the appropriate controllers are designed considering the small signal model of the converter in each mode. Finally, a prototype of the proposed converter has been implemented in the laboratory, and the experimental results have verified the converter's ability to balance the bipolar DC grid's voltages and its capability of transferring power in various microgrid's conditions.

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