Open AccessResearch on cascaded three‐phase‐bridge multilevel converter based on CPS‐PWM
Author(s) -
Lu ZhiG.,
Zhao LiL.,
Zhu WanP.,
Wu ChunJ.,
Qin YuS.
Publication year - 2013
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2012.0510
Subject(s) - pulse width modulation , electronic engineering , converters , rectifier (neural networks) , h bridge , decoupling (probability) , capacitor , topology (electrical circuits) , field programmable gate array , voltage , engineering , power (physics) , three phase , boost converter , computer science , electrical engineering , control engineering , physics , embedded system , stochastic neural network , quantum mechanics , machine learning , recurrent neural network , artificial neural network
Cascaded multilevel converters are emerging as a new breed of power converter options for high‐voltage and high‐power applications. A cascaded three‐phase‐bridge (C3PB) multilevel topology is proposed in this study. The new multilevel converter topology is derived from an optimum combination of three‐phase voltage source converter modules and it needs fewer switches and dc capacitors than Δ‐connected cascaded H‐bridge converter under the similar operation condition. The characteristics of the C3PB converter are presented through analysing its current relationship, voltage relationship and power allocation in detail; the analysis results show that all the converter modules equally share the output power. Based on carrier phase‐shifted pulse‐width modulation (CPS‐PWM) technique, simulation results of two‐level and three‐level inverter are given to verify the theoretical analysis; meanwhile, CPS‐PWM and power decoupling control method are employed to validate the three‐level C3PB rectifier. Finally, based on Digital Signal Processor (DSP) + Field Programmable Gate Array (FPGA) control board, a lab prototype is built to verify the validity and feasibility of the proposed C3PB converter along with the proposed control method.