TY - GEN
T1 - A Novel PWM Technique for MMCs with High Frequency Link and Natural Capacitor Balancing for Grid-Interfacing of Renewables
AU - Kumar, Prince
AU - Kshirsagar, Abhijit
AU - Opila, Daniel
AU - Mohan, Ned
PY - 2018/7/2
Y1 - 2018/7/2
N2 - This paper presents a new pulse width modulation (PWM) technique for a high-frequency link Modular Multilevel Converter topology for grid-integrated renewables. The topology generates a multilevel output voltage with low harmonic distortion, increased reliability, and design flexibility due to the modular nature of the converter. A central full-bridge converter is connected to multiple High Frequency Link modules via high frequency transformers. Each module produces its own isolated DC voltage, and modules are inserted or bypassed to synthesize large AC voltages. The proposed PWM technique equalizes module utilization without increasing losses, and retains inherent capacitor voltage balancing. Simulation results using SIMULINK models show that the proposed modulation scheme results in better performance than conventional schemes such as level-shifted carrier PWM, phase-shifted carrier PWM, hybrid schemes or nearest-level modulation.
AB - This paper presents a new pulse width modulation (PWM) technique for a high-frequency link Modular Multilevel Converter topology for grid-integrated renewables. The topology generates a multilevel output voltage with low harmonic distortion, increased reliability, and design flexibility due to the modular nature of the converter. A central full-bridge converter is connected to multiple High Frequency Link modules via high frequency transformers. Each module produces its own isolated DC voltage, and modules are inserted or bypassed to synthesize large AC voltages. The proposed PWM technique equalizes module utilization without increasing losses, and retains inherent capacitor voltage balancing. Simulation results using SIMULINK models show that the proposed modulation scheme results in better performance than conventional schemes such as level-shifted carrier PWM, phase-shifted carrier PWM, hybrid schemes or nearest-level modulation.
KW - Full-Bridge Converter
KW - Full-Bridge Rectifier
KW - High Frequency Transformer
KW - Modular Multilevel Converter
KW - Pulse Width Modulation
UR - http://www.scopus.com/inward/record.url?scp=85065976432&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85065976432&partnerID=8YFLogxK
U2 - 10.1109/PEDES.2018.8707812
DO - 10.1109/PEDES.2018.8707812
M3 - Conference contribution
AN - SCOPUS:85065976432
T3 - Proceedings of 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018
BT - Proceedings of 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th IEEE International Conference on Power Electronics, Drives and Energy Systems, PEDES 2018
Y2 - 18 December 2018 through 21 December 2018
ER -
