Study and Implementation of a Novel Self-Balancing Nine-Level Inverter with Coupled

A novel self-balancing nine-level inverter with coupled inductor is present in this paper. The proposed inverter can generate nine-level voltage with only two capacitors, and making series charged and series with parallel discharging path to self-balancing. Compared with the same level conventional...

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Bibliographic Details
Published in2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) pp. 1 - 6
Main Authors Chen, Nai-Ruei, Wu, Chi-Shen, Chen, Jiann-Fuh
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2018
Subjects
Capacitors
coupled inductor
Inductors
Inverters
Nine-level inverter
self-balancing
Switches
Topology
Total harmonic distortion
Voltage control
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Summary:A novel self-balancing nine-level inverter with coupled inductor is present in this paper. The proposed inverter can generate nine-level voltage with only two capacitors, and making series charged and series with parallel discharging path to self-balancing. Compared with the same level conventional topologies, this topology uses less components and makes voltage balance without using additional voltage-balancing circuit or complex control method, so its benefits are smaller size circuit, higher power density and lower cost. The total harmonic distortion of the output voltage is low. Lastly, by using controller TMS320F28035, a nine-level inverter in 270V input voltage, 380Vrms output voltage and 3 kW output power is implemented. The maximum efficiency is 97.1% in 1725 W and the efficiency is 95.46% in full load.
DOI:10.1109/PEAC.2018.8590328