TY - GEN
T1 - Pulse Width Modulation Method for Reliability Improvement of DC-link Capacitors and Power Devices of NPC Inverter
AU - Choi, Jae Heon
AU - Choi, Ui Min
N1 - Publisher Copyright:
© 2023 The Korean Institute of Power Electronics.
PY - 2023
Y1 - 2023
N2 - Power devices and DC-link capacitors are considered reliability-critical components in power converters. Thermal stress caused by power loss leads to wear-out failures of DC-link capacitors and power devices. Previous studies have proposed various PWM methods to reduce the thermal stress of DC-link capacitors and power devices, respectively. However, the existing methods did not consider the reduction of thermal stress of DC-link capacitors and power devices simultaneously. This paper proposes the PWM method for improving the reliability of the NPC inverter by decreasing the thermal stress of DC-link capacitors and power devices concurrently. Through the simulations and experiments, the feasibility and effectiveness of the proposed PWM method are verified.
AB - Power devices and DC-link capacitors are considered reliability-critical components in power converters. Thermal stress caused by power loss leads to wear-out failures of DC-link capacitors and power devices. Previous studies have proposed various PWM methods to reduce the thermal stress of DC-link capacitors and power devices, respectively. However, the existing methods did not consider the reduction of thermal stress of DC-link capacitors and power devices simultaneously. This paper proposes the PWM method for improving the reliability of the NPC inverter by decreasing the thermal stress of DC-link capacitors and power devices concurrently. Through the simulations and experiments, the feasibility and effectiveness of the proposed PWM method are verified.
KW - 3-level NPC inverter
KW - photovoltaic
KW - pulse width modulation
KW - reliability
UR - http://www.scopus.com/inward/record.url?scp=85170644608&partnerID=8YFLogxK
U2 - 10.23919/ICPE2023-ECCEAsia54778.2023.10213720
DO - 10.23919/ICPE2023-ECCEAsia54778.2023.10213720
M3 - Conference contribution
AN - SCOPUS:85170644608
T3 - ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia: Green World with Power Electronics
SP - 3173
EP - 3178
BT - ICPE 2023-ECCE Asia - 11th International Conference on Power Electronics - ECCE Asia
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th International Conference on Power Electronics - ECCE Asia, ICPE 2023-ECCE Asia
Y2 - 22 May 2023 through 25 May 2023
ER -
