Stability Analysis and Active Stabilization of On-board DC Power Converter System with Input Filter

Stability Criteria for Input Filter Design in Converters with CPL: Applications in Sliding Mode Controlled Power Systems

“…High-power storage devices Energy-dense storage devices However, there are certain issues to be aware of at the moment of designing and implementing those power modules. Effectively, it has been extensively reported in the literature that, when a controlled power system tightly regulates energy supplied to a DC bus, the converter behaves as a Constant Power Load (CPL) for the upstream source [15][16][17]. Such CPL acts as a negative impedance, i.e., an increase in its terminal voltage results in a decrease in its current (and vice versa), which undermines the stability margins of the system.…”

“…Diverse criteria have been proposed for the analysis of input filters dynamics with CPLs in DC microgrids. The most widely found in the literature is the small-signal criterion by eigenvalue analysis through system linearization [17,18]. Also, several methods have been presented using Nyquist approaches, for instance, Gain margin and Phase margin criterion [19], Middlebrook's criterion [20] and the opposing argument criterion [21] among the most important ones.…”

Adaptive Nonsingular Fast Terminal Sliding Mode Control for Braking Systems with Electro-Mechanical Actuators Based on Radial Basis Function

“…We design the NFTSM controller according to Equations (19) and (20), suppose P * A is reference pressure, and the error variance z = P A − P * A ,…”

“…We design the NFTSM controller according to Equations (19) and ( In practical systems, the switch gain K is proportional to the uncertainties of the system and the upper bound of the disturbance. If the disturbance is large at some time, a larger K is needed to keep the system stable, but this will inevitably lead to strong chattering.…”

A Modified Neutral Point Balancing Space Vector Modulation for Three-Level Neutral Point Clamped Converters in High-Speed Drives

“…INCE the beginning of the More Electric Aircraft (MEA) concept, an increasing number of hydraulic, pneumatic and mechanical systems for large passenger aircraft have been replaced by their electrical equivalences to improve fuel efficiency and reduce emissions [1][2][3]. A key technology for MEA is an electrical starter generator system which enables starting aircraft engines electrically and running as a generator when engines reach self-sustained speed [2].…”