Flying Capacitor DTC Drive with Reductions in Common Mode Voltage and Stator Overvoltage

Abdolreza Rahmati; Mohammad Arasteh; Shahrokh Farhangi; Adib Abrishamifar

Flying Capacitor DTC Drive with Reductions in Common Mode Voltage and Stator Overvoltage

Vol. 11, No. 4, pp. 512-519, Jul. 2011

10.6113/JPE.2011.11.4.512

Common mode voltage

Direct torque control

Multilevel flying capacitor drive

Stator overvoltage

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Abstract

This paper gives a detailed analysis of the direct torque control (DTC) strategy in a five-level drive and proposes a 24-sector switching table. The known problems in low-voltage drives such as bearings currents and an overvoltage phenomenon which leads to premature failure are reviewed and the occurrence of these problems in medium voltage drives has been investigated. Then a solutions to these problems is presented and the switching table to deal with these problems is modified. Simulation and experimental results on a 3kVA prototype confirm the proposed solution. In implementing the above strategy a TMS320F2812 is used.

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Cite this article

[IEEE Style]

A. Rahmati, M. Arasteh, S. Farhangi, A. Abrishamifar, "Flying Capacitor DTC Drive with Reductions in Common Mode Voltage and Stator Overvoltage," Journal of Power Electronics, vol. 11, no. 4, pp. 512-519, 2011. DOI: 10.6113/JPE.2011.11.4.512.

[ACM Style]

Abdolreza Rahmati, Mohammad Arasteh, Shahrokh Farhangi, and Adib Abrishamifar. 2011. Flying Capacitor DTC Drive with Reductions in Common Mode Voltage and Stator Overvoltage. Journal of Power Electronics, 11, 4, (2011), 512-519. DOI: 10.6113/JPE.2011.11.4.512.