Multi Expansion Point Reduced Order Modelling for Electromagnetic Design of Power Electronics

Xinning Gao, Paul Evans, Mark Johnson, Ke Li

    Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

    3 Citations (Scopus)


    Modern power electronic systems operate with a trend of increasing speeds, voltage, power and temperature. In order to reduce the simulation time for electromagnetic(EM) modelling in power electronic systems, Model Order Reduction(MOR) technique is applied. The conventional MOR method uses a single expansion point at DC or 0Hz but this doesn’t give accurate results over a wide range of frequencies. In this work, a Krylov subspace based MOR technique method using multiple expansion points is introduced to accelerate the simulation. A test case will be given to demonstrate the application of multi-expansion point MOR method in EM modelling to evaluate multi-expansion point MOR compared with single point MOR in wide frequency range. Eigenvalue analysis will be illustrated to analysis the reason of the limitation of standard single-point MOR method.
    Original languageEnglish
    Title of host publication 2021 IEEE Design Methodologies Conference (DMC)
    Number of pages6
    ISBN (Electronic)978-1-6654-0301-6
    Publication statusPublished - 6 Sept 2021
    EventIEEE Design Methodologies Conference - Virtual
    Duration: 14 Jul 202115 Jul 2021

    Publication series

    Name2021 IEEE Design Methodologies Conference, DMC 2021


    ConferenceIEEE Design Methodologies Conference
    Abbreviated titleDMC

    Bibliographical note

    Funding Information:
    This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) through grant EP/R004390/1

    Publisher Copyright:
    © 2021 IEEE.


    • Current density analysis
    • Model order reduction
    • Modified multi-point PRIMA algorithm
    • PEEC (partial element equivalent circuit) method
    • Power electronics

    ASJC Scopus subject areas

    • Energy Engineering and Power Technology
    • Electrical and Electronic Engineering
    • Safety, Risk, Reliability and Quality
    • Modelling and Simulation


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