Abstract
In this study, a functional model for diode-bridge (DB) rectifiers is developed based on the dynamic phasor concept. The developed model is suitable for accelerated simulation studies of the electric power systems under normal, unbalanced and line faulty conditions. The high accuracy and efficiency of the developed model have been demonstrated by comparison against three-phase time-domain model and against the model employing synchronous space-vector representations. The experimental verification of the developed model is also reported. In addition, an error analysis shows that the error of the developed model is <10% at the most severe unbalanced conditions. The prime purpose of the model is for the simulation studies of more-electric aircraft power architectures at a system level; however, it can be directly applied for simulation study of any other electrical power system interfacing with uncontrolled DB rectifiers.
Highlights
There has been seen a significant penetration of power electronics into electric power systems (EPS) in recent years
Four different modelling layers are defined according to the modelling bandwidths i.e. architectural models, functional models, behavioural models and component models [2], [3]
Average modelling of ac distribution systems involves transforming the three-phase ac signals to a synchronous rotating dq frame, termed the dq0 model. This method has been used in modelling more-electric aircraft (MEA) electric power systems and is proved to be an effective technique [3]
Summary
There has been seen a significant penetration of power electronics into electric power systems (EPS) in recent years. The main results of the paper are summarised as follows: - The DP approach has been successfully applied to develop model an uncontrolled DB rectifier applicable for accelerated simulation studies of complex EPS, both balanced and unbalanced, and is consistent with the functional modelling layer specifications in [3]. The model is independent on other EPS devices and may be used as a library element interfacing within an extended three-phase EPS models - The model is verified experimentally under both balanced and unbalanced operation - The computational effectiveness of the developed model is proved through comparison against time-domain abc switching and functional non-switching dq0 models and a significant computational acceleration is demonstrated
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
