Open AccessA HIGH VOLTAGE GAIN RECTIFIER-FED TWO-STAGE STEP-UP DC-DC CONVERTER WITH PI CONTROLLER
Author(s) -
D. Murali,
S. Annapurani
Publication year - 2019
Publication title -
international journal of engineering applied science and technology
Language(s) - English
Resource type - Journals
ISSN - 2455-2143
DOI - 10.33564/ijeast.2019.v04i08.024
Subject(s) - rectifier (neural networks) , control theory (sociology) , forward converter , voltage , charge pump , pid controller , electrical engineering , physics , materials science , computer science , boost converter , engineering , capacitor , control (management) , temperature control , stochastic neural network , artificial intelligence , recurrent neural network , artificial neural network , machine learning , thermodynamics
This paper presents the analysis and simulation of a closed-loop configuration of a non-isolated two-stage DC-DC boost converter operating in continuous conduction mode (CCM) with fixed switching frequency. The proposed converter shows improved voltage conversion ratio compared to the conventional boost converter. The proposed converter is fed by an uncontrolled diode bridge rectifier for which the input AC voltage is 80 V (rms). The design of the two-stage converter is such that the input AC voltage of 80 V (rms) is stepped up to around 800 V (DC) at the end of the second stage. The closed-loop configuration with a simple PI (Proportional+Integral) controller for the proposed converter is simulated in Matlab/Simulink platform. The closed-loop implementation maintains higher constant output voltage profile despite changes in input voltage and significantly reduces overshoot when compared to openloop configuration. A prototype model of the converter has been developed to validate its performance. Keywords— Boost converter, Closed-loop implementation, Continuous Conduction Mode, Matlab/Simulink, Openloop configuration, PI controller