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DC-DC boost converter by H-infinity controller

Ebshish, Abdolkarem Salem (2014) DC-DC boost converter by H-infinity controller. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

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 suffer from dynamic response, produces overshoot, longer rise time and settling time which in turn will influence the output voltage regulation of the Boost converter. Therefore, the implementation of practical H-infinity(H∞) controller that will deal to the issue must be investigated. H∞ controller using voltage output as feedback for im- proveing 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 and between H∞ controller and PID controller. The simulation results are shown that voltage output by using H∞ controller is able to be control in steady state condition for boost converter better than from PID controller.

Item Type: Thesis (Masters)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics
Depositing User: Normajihan Abd. Rahman
Date Deposited: 25 May 2014 01:14
Last Modified: 25 May 2014 01:14
URI: http://eprints.uthm.edu.my/id/eprint/5473
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