Robust Multi-Variable Controller Design for Two-Input Two-Output Fourth-Order DC-DC Converter

H∞ loop-shaping of a multi-input dc-dc converter using weight function parameter optimization

“…Step 2: Express G S , in normalized co-prime factor form and represented mathematically using equation (7) [8].…”

“…Step 3: Obtain the min max 1 g e =using equation (8), where max e is maximum stability margin. If max 1 4…”

“…These identification methodologies are linked to quantification of interactions for the time-specific (whose settling time is limited to several milli seconds) two-input integrated dc-dc converters. Quantification of interactions are not accurate for an integrated two-input converter as some of the methods propose centralized [8] while the other suggests decentralized [9] schemes. Controller design methodologies [7,[10][11][12] for these systems is a tedious task and are less reported in literature.…”

“…Such identification may satisfy either the steady-state or the dynamic performance, and probability of satisfying simultaneously both of these performance specifications is minimum. In this situation, optimization methods provide a reliable solution in identifying weight function parameters and this selection enhances the design efficiency as well as accuracy of HILSD [8,9,[18][19][20][21][22]. Weight function parameter optimization of HILSD are reported in literature for a few mechanical systems and for a very few electrical systems.…”

Robust control of a DC-DC three-port isolated converter

“…However, the load is not isolated and the uncertainties in the input sources were not considered. More recently, Mummadi et al (2020) introduced a H ' loop-shaping controller for a two-input two-output DC-DC converter capable of regulating the DC-bus voltage and the low current source with only two switches and four energy storage elements. However, the approach uses an decoupling network in the controller design procedure.…”