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The power electronic converters are actually single input multiple output (SIMO) systems in frequency domain. Under a perturbation frequency excitation, the state variables contain not only the perturbation frequency but also its sideband components. However, traditional small-signal modeling methods focus on establishing the relationship at perturbation frequency and ignore the other sideband components...
Impedance is very important for power electronic systems because of the close relationship between impedance and system stability. The power converters are typical nonlinear dynamic systems in frequency domain. With a sinusoidal input voltage perturbation excitation, the input current contains not only the input perturbation frequency, but also multiple other frequency components. Therefore, the input...
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