Robust Control Applied to Improve the Performance of a Buck-Boost Converter
نویسندگان
چکیده
In this paper, H∞ loop-shaping control is applied to improve the performance of a buckboost dc-dc power converter based on pulse-width-modulation (PWM) techniques. Here, classical control techniques (i.e., proportional-integral-derivative (PID) control) and post-modern control techniques (i.e., H∞ control), are used to design the feedback loop of a buck-boost dc-dc power converter. The results of the experiment are satisfactory and show that robust controllers do not depend strongly on the operating point, and that H∞ loop-shaping control performs better than PID control. Key–Words: buck-boost converter, state-space averaging procedure, robust stability, PID control, H∞ loop-shaping control, disturbance rejection
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