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An extended commutation cell (ECC) is a four-port four-switch power processing cell that allows for bidirectional energy transport in two orthogonal directions throughout the structure. By cascading multiple cells a high-quality output voltage waveform can be constructed with a high number of levels. The voltage across each cell capacitor can be adjusted independently of the load, resulting in a high flexibility in output levels. This paper derives a robust sliding mode control algorithm for capacitor voltage control in ECC based converters. It includes a cell current estimator, being intended for fast regulation of the internal states of each cell. The proposed method is analyzed, simulated and experimentally verified on a 4.4 kW eight-level inverter prototype.
|Title of host publication||Proceedings of the 8th International Power Electronics and Motion Control Conference (IPEMC 2016-ECCE Asia), May 22-25, 2016, Hefei, China|
|Place of Publication||Piscataway|
|Publisher||Institute of Electrical and Electronics Engineers|
|Number of pages||7|
|Publication status||Published - May 2016|
|Event||8th International Power Electronics and Motion Control Conferenc (IPEMC 2016) - Platinum Hanjue Hotel, Hefei, China|
Duration: 22 May 2016 → 25 May 2016
Conference number: 8
|Conference||8th International Power Electronics and Motion Control Conferenc (IPEMC 2016)|
|Abbreviated title||IPEMC 2016-ECCE Asia|
|Period||22/05/16 → 25/05/16|
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