TY - GEN
T1 - Unbalanced three-phase control using offset-voltage for H-bridge multilevel inverter with faulty power cells
AU - Park, Young Min
AU - Lyoo, Han Seoung
AU - Lee, Hyun Won
AU - Jung, Myung Gil
AU - Lee, Se Hyun
AU - Yoo, Ji Yoon
PY - 2008
Y1 - 2008
N2 - In this paper, unbalanced three-phase control method is proposed to increase the fault tolerance for H-bridge multilevel inverter under the conditions of faulty power cells. It is possible to generate a balanced three-phase line-to-line voltage by phase-shifting and bypassing faulty power cells with a minimum voltage drop. In this method, the concept of voltage modulation by using offset voltage is applied to an unbalanced three-phase control method. Especially, it is possible to use the maximum output voltage of inverter by adopting the real time unbalanced control method of phase voltage irrespective of the fault location and the number of disabled power cells. Also, the feasibility of the proposed method is proved by the H-bridge multilevel inverter test composed of 7-level.
AB - In this paper, unbalanced three-phase control method is proposed to increase the fault tolerance for H-bridge multilevel inverter under the conditions of faulty power cells. It is possible to generate a balanced three-phase line-to-line voltage by phase-shifting and bypassing faulty power cells with a minimum voltage drop. In this method, the concept of voltage modulation by using offset voltage is applied to an unbalanced three-phase control method. Especially, it is possible to use the maximum output voltage of inverter by adopting the real time unbalanced control method of phase voltage irrespective of the fault location and the number of disabled power cells. Also, the feasibility of the proposed method is proved by the H-bridge multilevel inverter test composed of 7-level.
UR - http://www.scopus.com/inward/record.url?scp=52349116864&partnerID=8YFLogxK
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U2 - 10.1109/PESC.2008.4592203
DO - 10.1109/PESC.2008.4592203
M3 - Conference contribution
AN - SCOPUS:52349116864
SN - 9781424416684
T3 - PESC Record - IEEE Annual Power Electronics Specialists Conference
SP - 1790
EP - 1795
BT - PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings
T2 - PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference
Y2 - 15 June 2008 through 19 June 2008
ER -