Title :
Impact of source resistance on duty ratio and output voltage of a DC to DC step down converter
Author :
Mohammad, Adnan ; Rahaman, Md Shafieur ; Rahman, Syed Khalid ; Ahmed, Omar ; Aziz, Ashique Ibni ; Muntakim, Tahmid Ul
Author_Institution :
Dept. of Electr. & Electron. Eng., American Int. Univ., Dhaka, Bangladesh
Abstract :
This paper represents the effect of input resistance of voltage source which is applied to a step down DC to DC converter. Ideally the output voltage of a step down dc chopper is dependent on duty ratio of the switching signal. Practically, there is the presence of source resistance which represents deviated characteristics of a simple dc to dc step down converter. The equation of the output voltage is derived considering the effect of source resistance and a constant voltage drop across a switch used to control the value of output voltage. The impact of source resistance is mainly focused on the duty ratio of the switching signal of the converter. The analysis is preformed to find the limit of minimum limit of load resistance for proper voltage regulation at a given input voltage. Characteristics are obtained from the simulation by MATLAB.
Keywords :
DC-DC power convertors; choppers (circuits); switching convertors; voltage control; DC to DC step down converter duty ratio; DC to DC step down converter output voltage; constant voltage drop; load resistance; output voltage control; source resistance impact; step down DC chopper; switching signal; voltage regulation; voltage source input resistance effect; Choppers (circuits); Load modeling; Mathematical model; Power electronics; Resistance; Switches; Voltage control; chopper; dc to dc converter; duty ratio; source resistance; switching pulse;
Conference_Titel :
Electrical, Computer and Communication Technologies (ICECCT), 2015 IEEE International Conference on
Conference_Location :
Coimbatore
Print_ISBN :
978-1-4799-6084-2
DOI :
10.1109/ICECCT.2015.7226006
