Neutral-point voltage waveform control method for mitigating the low-frequency ripple current in E-capless full-bridge inverter

Author

Guo-Rong Zhu ; Wei-Xing Liu ; Xiao-Bin Fu ; Biao Liang ; Hao-Ran Wang

Author_Institution

Electr. Eng. Coll., Guizhou Inst. of Technol., Guiyang, China

fYear

2014

fDate

5-8 Nov. 2014

Firstpage

816

Lastpage

820

Abstract

Ripple current at twice the output frequency exists at dc side in single phase inverter due to the instantaneous power imbalance between input and output power. Neutral-point voltage waveform control method is proposed in this paper to eliminate the ripple current in E-capless full-bridge inverter. With the proposed method, the pulsation power is controlled to only flow through ac capacitors and the load, so that the dc source just supplies the average dc output power. Theoretical analysis, simulation and experiment results validated the proposed method.

Keywords

bridge circuits; invertors; voltage control; waveform analysis; AC capacitor; E-capless full-bridge inverter; instantaneous power imbalance; low-frequency ripple current mitigation; neutral-point voltage waveform control method; pulsation power; single phase inverter; Capacitors; Control systems; Frequency control; Fuel cells; Inverters; Pulse width modulation; Voltage control; E-capless; inverter; neutral-point voltage control; ripple current;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Application Conference and Exposition (PEAC), 2014 International

Conference_Location

Shanghai

Type

conf

DOI

10.1109/PEAC.2014.7037963

Filename

7037963