CASPIAN JOURNAL

MANAGEMENT AND HIGH TECHNOLOGIES

MODEL ANALYSIS OF MAGNETIC CIRCUIT

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Marchenko Alexey L.  MODEL ANALYSIS OF MAGNETIC CIRCUIT // Caspian journal : management and high technologies. — 2011. — №4. — pp. 45-51.

Marchenko Alexey L. - Cand. in Technics, Moscow State Aviation Technological University, 3 Orshanskaya str., Moscow, 121552, Russia, marchenkoal@mail.ru.

The branched magnetic circuits with constant magnetic-driving forces and with air gaps wide in fram are nonlinear. At calculation of magnetic flux (magnetic inductions) in branched magnetic circuits are replaced with an equivalent electric circuit, and it is accepted that magnetic-driving force is similar to an electromotive power, magnetic resistance of a site fram – to resistive nonlinear resistance similar to volt-amper the characteristic similar veber-ampernoj to the characteristic of the corresponding site fram, magnetic resistance of an air gap wide – to resistance of the linear resistor, a magnetic flux – to an electric current. The nonlinear electric circuit which needs to be calculated graphic or otherwise as a result turns out. In the article the program for calculation of magnetic flux in air gaps wide of the branched magnetic circuit used in high school teaching while studying electrical engineering is considered. When calculating magnetic flux the analytical approximation of magnetization curves of four grades is used, and in solving systems of nonlinear equations numerical method of Newton is used. Modeling of a magnetic circuit is executed in the environment of Borland C++ Builder 6.0.

Key words: model branched magnetic circuit,magnetic flux in air gaps,numerical method of Newton,Jaсobi matrix