Open AccessClosed‐loop waveform control of boost inverter
Author(s) -
Zhu GuoRong,
Xiao ChengYuan,
Wang HaoRan,
Tan SiewChong
Publication year - 2016
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.2015.0603
Subject(s) - ripple , waveform , control theory (sociology) , inverter , capacitor , voltage , transient (computer programming) , transient response , computer science , engineering , control (management) , electrical engineering , artificial intelligence , operating system
The input current of single‐phase inverter typically has an AC ripple component at twice the output frequency, which causes a reduction in both the operating lifetime of its DC source and the efficiency of the system. In this paper, the closed‐loop performance of a proposed waveform control method to eliminate such a ripple current in boost inverter is investigated. The small‐signal stability and the dynamic characteristic of the inverter system for input voltage or wide range load variations under the closed‐loop waveform control method are studied. It is validated that with the closed‐loop waveform control, not only was stability achieved, the reference voltage of the boost inverter capacitors can be instantaneously adjusted to match the new load, thereby achieving improved ripple mitigation for a wide load range. Furthermore, with the control and feedback mechanism, there is minimal level of ripple component at the DC bus during steady state, and the transient response is rapid with negligible effect on the output voltage. Analysis, simulation and experimental results are presented to support the investigation.