TY - GEN
T1 - DC link capacitor sizing for 240°-clamped space vector PWM for EV Traction Inverters
AU - Qamar, Haleema
AU - Qamar, Hafsa
AU - Wu, Deliang
AU - Ayyanar, Rajapandian
N1 - Funding Information:
This work made use of facility supported by the National Science Foundation Industry-University Collaborative Research Center for Efficient Vehicles and Sustainable Transportation Systems under Award No. IIP-1624842.
Publisher Copyright:
© 2021 IEEE.
PY - 2021/6/14
Y1 - 2021/6/14
N2 - DC link capacitor is one of the critical components in EV powertrain affecting the size, weight, and reliability. In a cascaded architecture (DC-DC stage followed by DC-AC stage), the size of DC link capacitor is dictated by the ripple current it has to support from both the stages. This work explores the benefits of relatively new PWM method called 240°-Clamped space vector PWM (240CPWM) in terms of reduced current stress on the DC link capacitor which corresponds to reduction in the DC link capacitor size. Detailed analysis of ripple current contribution from DC-DC and DC-AC stages is carried out leading to design methods for the DC link capacitor. It is shown that the current stress on the DC link capacitor for 240CPWM is 25% lower as compared to CSVPWM under same operating conditions. The analysis is validated by the experimental results from a 5 kW, 500 V (line to line voltage) hardware prototype.
AB - DC link capacitor is one of the critical components in EV powertrain affecting the size, weight, and reliability. In a cascaded architecture (DC-DC stage followed by DC-AC stage), the size of DC link capacitor is dictated by the ripple current it has to support from both the stages. This work explores the benefits of relatively new PWM method called 240°-Clamped space vector PWM (240CPWM) in terms of reduced current stress on the DC link capacitor which corresponds to reduction in the DC link capacitor size. Detailed analysis of ripple current contribution from DC-DC and DC-AC stages is carried out leading to design methods for the DC link capacitor. It is shown that the current stress on the DC link capacitor for 240CPWM is 25% lower as compared to CSVPWM under same operating conditions. The analysis is validated by the experimental results from a 5 kW, 500 V (line to line voltage) hardware prototype.
KW - 240CPWM
KW - DC link current stress
KW - Electric Vehicle (EV)
KW - Hybrid Electric Vehicle (HEV)
KW - Pulse width modulation (PWM)
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U2 - 10.1109/APEC42165.2021.9487179
DO - 10.1109/APEC42165.2021.9487179
M3 - Conference contribution
AN - SCOPUS:85115711969
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 835
EP - 841
BT - 2021 IEEE Applied Power Electronics Conference and Exposition, APEC 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 36th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2021
Y2 - 14 June 2021 through 17 June 2021
ER -