Applied Voltage Control Scheme for a DC Motor fed by a SEPIC based DC-DC Converter


Authors : M. Vanitha; Dr. D. Murali

Volume/Issue : Volume 6 - 2021, Issue 12 - December

Google Scholar : http://bitly.ws/gu88

Scribd : https://bit.ly/3q4KDcX

Recently, the researchers concentrate on the development of DC-DC converters with high voltage conversion ratio suitable for applications in nonconventional energy system based power generation. Two categories of DC-DC conversion schemes are available; transformer-based (isolated) and transformerless (non-isolated) configurations. Due to certain drawbacks present in transformer-based DC-DC conversion scheme, the non-isolated DC-DC converters are mostly preferred for applications that involve power generation using renewable energy sources. There are certain simple configured non-isolated high gain DC-DC conversion schemes with single control switch. This paper proposes the steady state analysis of a non-isolated highgain single-switch DC-DC conversion scheme based on single-ended primary-inductor converter (SEPIC) topology with DC motor load. The proposed converter is operated in continuous conduction mode. The simulation analysis of the proposed SEPIC converter feeding a DC shunt motor is carried out using MATLAB / SIMULINK software tool. The no-load characteristics of the motor such as speed, torque, and armature current are validated by changing the converter output voltage through duty factor variation of the switch.

Keywords : Continuous inductor current mode; DC-DC SEPIC topology; DC shunt motor; Duty factor; MATLAB/SIMULINK; Performance characteristics

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