Open AccessCALCULATION OF INDUCTANCE FOR A BI-DIRECTIONAL DC/DC CONVERTER IN AUTONOMOUS UNDERWATER APPARATUS
Author(s) -
Boris Avdeyev
Publication year - 2018
Publication title -
vestnik astrahanskogo gosudarstvennogo tehničeskogo universiteta. seriâ: morskaâ tehnika i tehnologiâ
Language(s) - English
Resource type - Journals
eISSN - 2225-0352
pISSN - 2073-1574
DOI - 10.24143/2073-1574-2018-4-107-114
Subject(s) - inductance , electrical engineering , boost converter , converters , ripple , inductor , voltage , ćuk converter , forward converter , engineering , control theory (sociology) , computer science , control (management) , artificial intelligence
Submersible apparatus work at a depth inaccessible for divers and submarines. They are small devices linked with the depot ship due to their limited autonomous capacity. Application of submersible apparatus helps to enlarge the range of their operation and to decrease maintenance costs. Accumulator storage batteries with relatively low voltage are the main power source of these apparatus. DC converter operation is influenced by the inductance value. The article deals with the problems of calculating the inductance for bi-directional DC voltage converters for autonomous underwater apparatus. The scheme of the converter is presented, its operation modes are considered, equations describing the processes in the electrical circuit for different states of the IGBT-transistor are compiled. An expression describing the current oscillations in the regime of continuous current with certain assumptions is derived. It is stated that the inductance should be greater than a certain value to ensure the operation of the DC converter in the continuous current mode. Dependences of the current ripple through the inductor are plotted as a function of the inductance. Simulation of the DC converter made in the Simulink package is performed and oscillograms of the current and voltage at the output of the converter are shown, which confirm the correctness of the procedure for determining the minimum value of the inductance to ensure operation of the DC converter in the continuous current mode.