TY - GEN
T1 - Asymmetric Pulse Width Modulation for Improving the Reliability of Motor Drive Inverters
AU - Choi, Ui Min
AU - Vernica, Ionut
AU - Blaabjerg, Frede
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/12/3
Y1 - 2018/12/3
N2 - In multi-chip power modules, each power device could have different thermal impedance due to an asymmetric internal layout of the power module. This may lead to different thermal loadings and thereby having lifetime difference of the power devices in practical applications. Both lifetime and power rating of motor drives are limited by the most stressed device. Therefore, the reliability of motor drive can be improved by increasing the lifetime of the most stressed device. In this paper, the asymmetric Pulse Width Modulation (PWM) method to increase the reliability of inverters in motor drive systems has been proposed. The effect of an asymmetric layout of IGBT modules on the reliability of motor drives is studied based on a 3-phase motor drive application. Then, an asymmetric PWM method is proposed. Finally, the lifetime of the IGBT is compared before and after the proposed method is applied.
AB - In multi-chip power modules, each power device could have different thermal impedance due to an asymmetric internal layout of the power module. This may lead to different thermal loadings and thereby having lifetime difference of the power devices in practical applications. Both lifetime and power rating of motor drives are limited by the most stressed device. Therefore, the reliability of motor drive can be improved by increasing the lifetime of the most stressed device. In this paper, the asymmetric Pulse Width Modulation (PWM) method to increase the reliability of inverters in motor drive systems has been proposed. The effect of an asymmetric layout of IGBT modules on the reliability of motor drives is studied based on a 3-phase motor drive application. Then, an asymmetric PWM method is proposed. Finally, the lifetime of the IGBT is compared before and after the proposed method is applied.
UR - http://www.scopus.com/inward/record.url?scp=85060309253&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2018.8557673
DO - 10.1109/ECCE.2018.8557673
M3 - Conference contribution
AN - SCOPUS:85060309253
T3 - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
SP - 6430
EP - 6435
BT - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Y2 - 23 September 2018 through 27 September 2018
ER -
