Abstract
The article describes the formation of low-frequency currents in ferromagnetic oscillatory circuits. As a result of parallel and serial connection of multi-loop ferroresonance circuits, the frequencies of harmonics of the second-order amplitude of soft excitation are considered. Each of the schemes in the article is analyzed, and taking into account the industrial use of frequency converters, it makes it possible for further research on the production of frequency converters.
Highlights
At a certain intensity of change in the nonlinear circuit parameter, the natural frequency of the oscillating system corresponding to the equivalent parameters of the circuit may be equal to half the frequency of the driving force, and subharmonic oscillations with large amplitudes are excited in the system
Studies have shown that simple ferromagnetic circuits when excited by an autoparametric oscillation (APO) at the subharmonic frequency with a single ferromagnetic element L (i) or with a nonlinear capacitance C (u), a lot of work has been devoted to: [3,4,5,6,7,8]
If a secondary coil of this scheme to consider conditionally as a twocircuit chain, it will be divided the linear capacity forming together with nonlinear inductances of transformers А and В two ferroresonance a circuit here we deal with the division of frequency accompanied by simultaneous multiplication of number of phases in the same frequency rate (fig-4 (a)) we here receive in these circuits frequency division twice, and pressure subharmonic oscillation (SHO) U_a0andࠟ Uࠠ_B0are shifted from each other on 180 electric degrees
Summary
At a certain intensity of change in the nonlinear circuit parameter, the natural frequency of the oscillating system corresponding to the equivalent parameters of the circuit may be equal to half the frequency of the driving force, and subharmonic oscillations with large amplitudes are excited in the system.Studies have shown that simple ferromagnetic circuits when excited by an autoparametric oscillation (APO) at the subharmonic frequency (fig-1., fig-2.) with a single ferromagnetic element L (i) or with a nonlinear capacitance C (u), a lot of work has been devoted to: [3,4,5,6,7,8].It is assumed that in general, the frequency APO is equal toIt is considered to be that generally frequency of agrarian and industrial complex is equal: Ω=Κ*ω (1) where ω- frequency of the power source. At a certain intensity of change in the nonlinear circuit parameter, the natural frequency of the oscillating system corresponding to the equivalent parameters of the circuit may be equal to half the frequency of the driving force, and subharmonic oscillations with large amplitudes are excited in the system.
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