Abstract
DC-DC converters are widely used in computer peripheral equipments and industrial applications. Luo converter is a recently developed DC-DC converter. Positive output Luo converter performs the conversion from positive source voltage of one level to positive load voltage of another required level This paper presents simulation of PI and neuro controllers for a positive output super-lift re-lift DC-DC converter. Super lift converters make the output voltage increasing in geometric progression. They are different from any other existing DC-DC converters and possess many advantages including very high output voltage with small ripples. Therefore these converters will be widely used in industrial applications especially for very high voltage projects. Control algorithm is developed in this work to ensure tracking of the reference voltage and rejection of system disturbances by successive measurements of the converter output voltage at certain time instants within a conduction period. The main objective is simulation of PI and neuro controllers using MATLAB (version 7.1) software and evaluate the controller’s performances. The simulation results show that neuro controller provides quicker settling of output whereas PI controller creates less over shoot.
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