Modeling and Instability of Average Current Control
For power electronics engineers, it provides a more accurate modeling method for stability analysis of DC-DC converters, but the findings are incremental.
The paper analyzes the dynamics and stability of average current control in DC-DC converters using sampled-data modeling, finding that orbital stability is unrelated to ripple size and identifying an unstable range of compensator pole.
Dynamics and stability of average current control of DC-DC converters are analyzed by sampled-data modeling. Orbital stability is studied and it is found unrelated to the ripple size of the orbit. Compared with the averaged modeling, the sampled-data modeling is more accurate and systematic. An unstable range of compensator pole is found by simulations, and is predicted by sampled-data modeling and harmonic balance modeling.