Skip to Content
Find More Like This
Return to Search

SYSTEM AND METHOD FOR OPTIMIZING FUNDAMENTAL FREQUENCY MODULATION FOR A CASCADED MULTILEVEL INVERTER

United States Patent Application

20160380556
A1
View the Complete Application at the US Patent & Trademark Office
A system and a method for optimizing fundamental frequency modulation in a cascaded multilevel inverter (CMI) are provided. The CMI includes at least a first H-bridge module and a second H-bridge module connected in series with the first H-bridge module. The first H-bridge module is operated according to a first duty cycle and the second H-bridge module is operated according to a second duty cycle. The first duty cycle is greater than the second duty cycle. The first and second H-bridge modules are controlled utilizing fundamental frequency modulation. A portion of the first duty cycle is transferred to the second duty cycle thereby optimizing fundamental frequency modulation by at least improving power sharing between the first and second H-bridge modules and improving equalization of DC capacitor currents and voltage ripples while maintaining the same fundamental modulation to the output voltage waveform.
Peng, Fang Zheng (Okemos, MI), Yang, Shuitao (Lansing, MI)
15/ 188,218
June 21, 2016
GOVERNMENT LICENSE RIGHTS [0002] This invention was made with government support under grant number DE-AR0000222 awarded by the Department of Energy Advanced Research Projects Agency-Energy (ARPA-E). The government has certain rights in the invention.