2022/05/19 by Xiaofan Cui, Cui, Xiaofan, Al-Thaddeus Avestruz +1
Engineering · #Advanced DC-DC Converters #Dynamical Systems (math.DS) #FOS: Electrical engineering #FOS: Mathematics #Microgrid Control and Optimization #Multilevel Inverters and Converters #Systems and Control (eess.SY) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2205.10155
openalex publication_date 2022/05/19 · openalex created_date 2022/10/03 · openalex updated_date 2026/07/28
Stability guarantees are critical for cycle-by-cycle controlled dc-dc converters in consumer electronics and energy storage systems. Traditional stability analysis on cycle-by-cycle dc-dc converters is incomplete because the inductor current ramps are considered fixed; but instead, inductor ramps are not fixed because they are dependent on the output voltage in large-signal transients. We demonstrate a new large-signal stability theory that treats cycle-by-cycle controlled dc-dc converters as a particular type of feedback interconnection system. An analytical and practical stability criterion is provided based on this system. The criterion indicates that the L/R and RC time constants are the design parameters that determine the amount of coupling between the current ramp and the output voltage.