Research on the Influence of Switching Frequency on Low-Frequency Oscillation in the Voltage-Controlled Buck-Boost Converter

Table 1

The eigenvalues of Jacobian matrix at the different switching frequency f.

𝑓	𝜆1,2	𝜆3	State
150.0 kHz	−50.398633 ± 3085.4313𝑖	−38.155568	Stable
100.0 kHz	−47.624760 ± 3083.5781𝑖	−38.186625	Stable
50.0 kHz	−39.316753 ± 3078.0066𝑖	−38.280093	Stable
20.0 kHz	−14.514534 ± 3061.1835𝑖	−38.563187	Stable
14.8 kHz	−0.0749087 ± 3051.2569𝑖	−38.730860	Stable
14.7 kHz	0.30206437 ± 3050.9964𝑖	−38.735267	Unstable (Hopf bifurcation)