Open AccessInterface algorithm development for PHIL simulations of MMC‐HVDC devices via real‐time impedance matching
Author(s) -
Jiang Shouqi,
Li Guoqing,
Xin Yechun,
Wang Lixin,
Wang Weiru
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2018.8691
Subject(s) - interface (matter) , impedance matching , electrical impedance , thévenin's theorem , stability (learning theory) , computer science , electronic engineering , blocking (statistics) , power (physics) , control theory (sociology) , voltage , matching (statistics) , modular design , impedance control , algorithm , engineering , electrical engineering , equivalent circuit , mathematics , physics , control (management) , statistics , bubble , maximum bubble pressure method , parallel computing , computer network , quantum mechanics , machine learning , artificial intelligence , operating system
Power hardware‐in‐the‐loop (PHIL) simulation combines the advantages of digital and physical simulations, which is an effective method to study and analyse modular multi‐level‐converter‐based high‐voltage direct current (MMC‐HVDC) technology. For the damping impedance method (DIM) interface algorithm, a real‐time impedance matching method is proposed to improve the stability and accuracy of the PHIL simulation system. The equivalent impedance between the power interface and the MMC converter station is calculated according to the voltage difference and current between them, and the equivalent impedance parameters of MMC, in both de‐blocking and blocking modes, are obtained by the Thevenin equivalent models; then the information of the hardware under test impedance is used to update the DIM interface algorithm. In addition, a compensation control method for interface delay is used to reduce the system error. The excellent performance of stability and accuracy is verified by digital simulation results, which show that the proposed DIM interface algorithm is able to keep the PHIL simulation system stable under different kinds of disturbances and the maximum relative error of the active power <1.2%.