Comparative study of current-mode controllers for the positive output elementary Luo converter via state-space and frequency response approaches
Chincholkar, Satyajit Hemant
Chan, Chok You
Date of Issue2015
School of Electrical and Electronic Engineering
This study presents the comparative study of dual-loop current-mode controllers to achieve the output voltage regulation of the positive output elementary Luo (POEL) converter. The POEL converter is a fourth-order dc-dc boost converter developed using the voltage lift technique that gives a positive load voltage. Two current-mode controllers, one using the input inductor current and one using the output inductor current, are studied. Both state-space and frequency response approaches are used in the study to obtain a better insight of the comparative study. It is demonstrated that the controller using the input inductor current is more suitable for the regulation of the POEL converter. Experimental results showing the features of the controller in the presence of load and reference voltage changes are also provided to validate the theoretical conclusions.
IET Power Electronics
© 2015 The Institution of Engineering and Technology. This is the author created version of a work that has been peer reviewed and accepted for publication by IET Power Electronics, The Institution of Engineering and Technology. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1049/iet-pel.2014.0460].