Abstract

In this paper, author proposes study of two-loop voltage mode controlled (TVMC) buck converter for improved transient and dynamic performance under line and load disturbances. Buck converter with voltage mode control will improve efficiency, but transient response is sluggish. It requires large filter capacitor. Two-loop voltage control technique is proposed to improve output voltage regulation irrespective of line and load disturbances, and to achieve fast transient response. The two-loop voltage control technique has many advantages over conventional voltage mode control technique, such as fast transient response and reduced peak overshoot etc. Simulation model of TVMC buck converter is developed in MATLAB/Simulink and extensive result analysis has been made. The result analysis shows the effectiveness and significant improvement of the proposed control technique.

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