High-power high-frequency converter modelling using Dommel’s and Runge-Kutta methods in ABC and DQ frame

Weixing Lin, Dragan Jovcic

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

As the future DC grids will involve numerous converter systems, the accuracy and speed of their modeling becomes of high importance. This paper develops and compares four average models for high frequency converters like DC/DC or DC hubs: the average model in the ABC frame using Dommel's method (Model 1), the average model in the dq frame using Dommel's method (Model 2), the average model in the ABC frame using Runge-Kutta method (Model 3) and the average model in the dq frame using Runge-Kutta method (Model 4). Schematics and principles of the numerical algorithms for the four models are presented. Detailed switching model of a 500MW, 2kHz, ±200kV /±400kV DC/DC converter is taken as benchmark for comparing the four average models. It is found that Model 2 is numerically unstable. Model 1 and Model3 need the same small solution time step as the detailed switching model to give accurate results. Model 4 is the recommended average model for high frequency (1-3kHz) converter. It gives accurate result as the detailed switching model at the benefit of 100 times faster simulation speed.
Original languageEnglish
Title of host publicationPES General Meeting | Conference & Exposition, 2014 IEEE
PublisherIEEE Explore
Pages1-5
Number of pages5
DOIs
Publication statusPublished - Jul 2014
EventIEEE PES General Meeting 2014 - Washington, United Kingdom
Duration: 28 Jul 201431 Jul 2014

Conference

ConferenceIEEE PES General Meeting 2014
CountryUnited Kingdom
CityWashington
Period28/07/1431/07/14

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