Paper Title :A Control Strategy to Stabilize PWM DC-DC Buck Converter With Input Filter Using Fuzzy-Pi and its Comparison Using Pi and Fuzzy Controllers
Author :Ch.Susila, B.Rajasekhar
Article Citation :Ch.Susila ,B.Rajasekhar ,
(2016 ) " A Control Strategy to Stabilize PWM DC-DC Buck Converter With Input Filter Using Fuzzy-Pi and its Comparison Using Pi and Fuzzy Controllers " ,
International Journal of Electrical, Electronics and Data Communication (IJEEDC) ,
pp. 1-8,
Volume-4,Issue-11
Abstract : An Input filter is often employed for EMI noise reduction between a dc-dc converter and its power source. LC
filters at the input of dc-dc converter can lead to instabilities due to filter interactions with the converter control. However, its
presence in turn often results in degradation of dynamic performance and instability of the system even if the filter
attenuation is brilliantly designed. Conventional methods to remedy this issue usually employ external resistors to damp
filter oscillations. However such dissipative damping of input filter degrades the converter efficiency. This paper addresses
the instability problem in dc-dc converters under strong influence of input filter interaction and proposes an alternate
solution to this problem using a full state-feedback controller combined with a fuzzy PI control. This control algorithm
assures stability of the system without using any passive components in the filter circuit and thus avoiding any undesirable
losses. Simulation studies are carried out to confirm the effectiveness of the suggested control strategy under large
perturbation.
Keywords- Input filters interaction, state-feedback, dc-dc converters, control-loop stability, PI controller, fuzzy logic.
Type : Research paper
Published : Volume-4,Issue-11
DOIONLINE NO - IJEEDC-IRAJ-DOIONLINE-6175
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Copyright: © Institute of Research and Journals
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Published on 2016-12-02 |
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