The saturation characteristic of the core varies with operation of magnetically saturation controlled reactor's (MSCR). Consequently its harmonic characteristic is needed to take in consideration. The arithmetic representation of MSCR is derived in accordance with the structural characteristic and operational rules. The characteristic analysis investigates the function of voltage as well as current over all magnetic field parameters of harmonics. After that, it concludes that the working

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... of MSCR's is an odd harmonic function, including primary and odd harmonic components; controlling current and voltage are even harmonic functions, restraining DC and even harmonic components; Again magnetic point of view, the magnetic components are also surrounding the DC and its own fundamental part too. Finally, a simulation model for MSCR is fabricated with MATLAB/Simulink. This paper demonstrates that the analysis is very precise. So, this paper can be a reference to provide further instruction for analysis and proposition of new harmonic suppression methods of MSCR.