Series connection of input filters with static converters might lead to instability. However, the input filter has rarely taken into account in the stable design of power converters. Indeed, an input LC filter cascaded with a converter can become unstable even if the converter is regulated by a tight controller ensuring its stability alone. This fact is due to the interactions between the filter and the converter. To tackle the instability potential, an adaptive energy shaping control (AESC), which is based on the interconnection and damping assignment passivity-based control (IDA-PBC), is addressed in this article to regulate the cascaded system and achieve the following attractive features: 1) the input filter’s dynamics are considered in the control law, so the interactions between the filter and the converter are taken into account during the controller design and 2) the influence between several subsystems, put in cascade, is considered by the proposed method, and the new large-signal stability proof is given accordingly. Simulation and experimental results from a 3.5-kW, 270–200-V buck converter cascaded with an input filter under different load conditions, i.e., constant impedance load (CIL), constant current load (CCL), and constant power load (CPL), are presented to demonstrate the proposed approach.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Large-Signal Stabilization of Power Converters Cascaded Input Filter Using Adaptive Energy Shaping Control




    Publication date :

    2021-06-01


    Size :

    5505101 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Adaptive Grid Impedance Shaping Approach Applied for Grid-Forming Power Converters

    De Araujo Ribeiro, Ricardo Lucio / Oshnoei, Arman / Anvari-Moghaddam, Amjad et al. | BASE | 2022

    Free access

    Control of modular multilevel transformerless cascaded bidirectional converters

    Cong Wang, / Guang-lin Sha, / Jun Wang, et al. | IEEE | 2014