TY - GEN
T1 - An analytical approach to total harmonic distortion reduction in multi-level inverters
AU - Dagan, Kfir J.
AU - Rabinovici, Raul
AU - Baimel, Dmitry
PY - 2010
Y1 - 2010
N2 - We introduce a novel analytical approach to the evaluation of harmonic content in multi-level inverters. An analytical formula for the phase voltage total harmonic distortion (THD) of any multi-level pulse-width modulation (PWM) signal is introduced. As opposed to conventional THD expression where full spectral knowledge of the signal is required, the proposed formula depends only on fundamental amplitude, inverter's voltage level and switching angles. Hence, THD derivation may be significantly simplified. The proposed formula may be applied to evaluate THD of the multi-level output signal. It may be applied to make intelligent decisions as for the choice of various output signal characteristics such as switching frequency, switching angles placement, etc. THD formula can also serve as a cost function to minimize output signal THD while obtaining the desired control over signal's fundamental component and lower-order intrinsic harmonics. This way, in cases where multiple solutions exist (e.g., SHE), optimal solution in terms of THD may be obtained.
AB - We introduce a novel analytical approach to the evaluation of harmonic content in multi-level inverters. An analytical formula for the phase voltage total harmonic distortion (THD) of any multi-level pulse-width modulation (PWM) signal is introduced. As opposed to conventional THD expression where full spectral knowledge of the signal is required, the proposed formula depends only on fundamental amplitude, inverter's voltage level and switching angles. Hence, THD derivation may be significantly simplified. The proposed formula may be applied to evaluate THD of the multi-level output signal. It may be applied to make intelligent decisions as for the choice of various output signal characteristics such as switching frequency, switching angles placement, etc. THD formula can also serve as a cost function to minimize output signal THD while obtaining the desired control over signal's fundamental component and lower-order intrinsic harmonics. This way, in cases where multiple solutions exist (e.g., SHE), optimal solution in terms of THD may be obtained.
UR - http://www.scopus.com/inward/record.url?scp=78651243939&partnerID=8YFLogxK
U2 - 10.1109/EEEI.2010.5661951
DO - 10.1109/EEEI.2010.5661951
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AN - SCOPUS:78651243939
SN - 9781424486809
T3 - 2010 IEEE 26th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2010
SP - 892
EP - 896
BT - 2010 IEEE 26th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2010
T2 - 2010 IEEE 26th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2010
Y2 - 17 November 2010 through 20 November 2010
ER -