Abstract:
In the nonautonomous circuit which contains the dissipative element, the existence of self excited oscillation depends upon whether or not active power can maintain balance. The nonautonomous circuit with excited source has no dissipative element. It is a lossless system. The forced and self-excited oscillation components can simultaneously coexist unconditionally. The excited source export only reactive power. The resonant circuit does not consume any active power. The energy stored in this resonant circuit varies at all time; but after a cycle, the energy stored maintains original quantity. The relation between self-oscillation frequency and two voltage amplitude of oscillation can be found from the condition for reactive power balance. The main harmonic solutions are relative to both excited source and the initial condition. Taking the resonant circuit which contains the voltage-controlled nonlinear inductor as example, this paper demonstrates that the chaos can be produced by nonlinear coupling of forced and self-excited oscillation components.