Optimization of DC - DC boost converter using fuzzy logic controller
DC-DC converters are electronic devices used to change DC electrical power efficiently from one voltage level to another. Operation of the switching devices causes the inherently nonlinear characteristic of the DC-DC converters including one known as the Boost converter. Consequently, this con...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2013
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/1885/1/24p%20AIMEN%20KAHLIFA%20SOLUMAN%20AHTIEWSH.pdf http://eprints.uthm.edu.my/1885/2/AIMEN%20KAHLIFA%20SOLUMAN%20AHTIEWSH%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/1885/3/AIMEN%20KAHLIFA%20SOLUMAN%20AHTIEWSH%20WATERMARK.pdf |
| Summary: | DC-DC converters are electronic devices used to change DC electrical power efficiently
from one voltage level to another. Operation of the switching devices causes the
inherently nonlinear characteristic of the DC-DC converters including one known as the
Boost converter. Consequently, this converter requires a controller with a high degree of
dynamic response. Proportional-Integral- Differential (PID) controllers have been usually
applied to the converters because of their simplicity.
However, the main drawback of PID controller is unable to adapt and approach the best
performance when applied to nonlinear system. It will sufer from dynamic response,
produces overshoot, longer rise time and settling time which in turn will influenced the
output voltage regulation of the Boost converter. Therefore, the implementation of
practical Fuzzy Logic controller that will deal to the issue must be investigated.
Fuzzy logic controller using voltage output as feedback for significantly improving the
dynamic performance of boost dc-dc converter by using MATLAB@Simulink software.
The design and calculation of the components especially for the inductor has been done
to ensure the converter operates in continuous conduction mode. The evaluation of the
output has been carried out and compared by software simulation using MATLAB
software between the open loop and closed loop circuit between fuzzy logic control
(FLC) and PID control. The simulation results are shown that voltage output is able to be
control in steady state condition for DC-DC boost converter by using this methodology.
Scope of this project limited only one types that is Triangle membership function for
fuzzy logic control. |
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