TY - GEN
T1 - A new three-phase hybrid five-level inverter with reduced number of high-frequency switching devices
AU - Mihalache, Liviu
AU - Xue, Yaosuo
PY - 2011
Y1 - 2011
N2 - Multilevel converters find themselves more and more in low voltage and renewable energy applications due to their better harmonic spectra and less filtering requirements, in addition to conventional medium voltage industry drives and high voltage utility transmissions. This paper presents a new three-phase hybrid five-level inverter topology and the corresponding pulse-width modulation principle and switching pulse generation mechanism. The proposed five-level inverter has a modular structure, built by a regular flying-capacitor three-level inverter operated by PWM and a regular two-level inverter, which is switched only at line frequency. Compared to well-known multilevel topologies, the number of high frequency switching devices is reduced by one-third. Therefore, the proposed approach is able to reduce overall cost and switching loss while still producing an optimum output voltage spectrum and maintaining flying capacitor voltage balancing. Computer simulation results have verified the operation and feasibility of the proposed hybrid five-level inverter.
AB - Multilevel converters find themselves more and more in low voltage and renewable energy applications due to their better harmonic spectra and less filtering requirements, in addition to conventional medium voltage industry drives and high voltage utility transmissions. This paper presents a new three-phase hybrid five-level inverter topology and the corresponding pulse-width modulation principle and switching pulse generation mechanism. The proposed five-level inverter has a modular structure, built by a regular flying-capacitor three-level inverter operated by PWM and a regular two-level inverter, which is switched only at line frequency. Compared to well-known multilevel topologies, the number of high frequency switching devices is reduced by one-third. Therefore, the proposed approach is able to reduce overall cost and switching loss while still producing an optimum output voltage spectrum and maintaining flying capacitor voltage balancing. Computer simulation results have verified the operation and feasibility of the proposed hybrid five-level inverter.
UR - http://www.scopus.com/inward/record.url?scp=81855184467&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2011.6064274
DO - 10.1109/ECCE.2011.6064274
M3 - Conference contribution
AN - SCOPUS:81855184467
SN - 9781457705427
T3 - IEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings
SP - 3720
EP - 3727
BT - IEEE Energy Conversion Congress and Exposition
T2 - 3rd Annual IEEE Energy Conversion Congress and Exposition, ECCE 2011
Y2 - 17 September 2011 through 22 September 2011
ER -
