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ETOPIA WORKPACKAGES ETOPIA is organized along three research lines which are organised in work packages (WP)

WP5 Non-conventional modelling and measurements,

WP6 Multi-domain optimization, and

WP7 EM-Coexistence.

(WP1-4 are for management, training, dissemination and outreach)

Each Early Stage Researcher (ESR) will be scientifically trained through doing research on his/her well-defined individual project within a certain WP, continuously interacting with the other ESRs within and between the WPs to broaden outlook and realise the inter/multi-disciplinary aspects of the doctoral programme. Together with his/her supervisor each ESR will draw up a detailed work plan for their individual sub-project. An important aspect is the secondment to the other universities as this is also required by the universities for the Joint doctorate. But also secondments to industry, as the ESRs will be exposed to different environment, and will be requested to collaborate with researchers and engineers in industry. Also validation of the modelling and simulation methodology will be done in very close collaboration with industry.

Workpackage 5: Non-conventional modelling and measurements

Modern electronic systems draw current during a very short period of time, causing transients (microsecond timescales), sags and surges (milliseconds) and compensating currents in the power distribution system. In this WP non-linear models (parametric macro-models) to be used in the time domain (so not only line-commutated), is investigated, developed and applied. With this approach, non-linear and dynamic effects of electronic devices will be taken into account. Such device models will then be integrated in a typical "topological" approach for the simulation of a whole system, which will be carried out in WP7, resulting in models for components and devices to be used within the power distribution design environment. Individual ESRs’ projects within this WP are:

ESR2 Large-system EMI (interaction) analysis using EM topology implementing non-linear non-causal behavioural models

ESR4 Using Wavelet transform for highly distorted currents in an environment with variable levels of noise

ESR7 Reproducible in-situ magnetic field measurements for power electronic application

ESR11 Conducted and radiated EMI in T and F domain

Workpackage 6: Multi-domain optimization

The complex relationships between the non-stationary currents on a distribution system with many different non-linear loads will be investigated through comparisons between laboratory measurements and behavioural modelling. The effects of load and power system impedance variability will be explored and stochastic techniques for accurately assessing their impact on the system voltages and currents will be developed. This WP shall provide a complete toolbox of analysis techniques and indices for distortions that fully represents their stochastic and time varying nature (variability, deterioration in service etc). Individual ESRs’ projects within this WP are:

ESR3 Multi-domain design (EMI, Power Quality, Functional) of electric drive systems, including power converters

ESR6 Optimized design of passive & active EMI filters

ESR8 Transient radiated fields from power systems

ESR10 Interoperability of converter based (IFBT, SiC, GaN) power system devices

Workpackage 7: EM-Coexistence

A conventional distribution system, in a cabinet, or series of cabinets, a platform or building, or a large production plant, or (part of) a Smart City, is designed based on assumed power consumption at the fundamental (50 or 60 Hz) frequency. Nowadays we have to consider a multitude of energy suppliers and users with fast variations, for instance during switching, while at the same time more power line communication systems are being used for communication, control and monitoring. Many cases of electromagnetic interferences have been reported, including those with many other (non-communication) equipment. A high-level design approach is needed with proper levels of immunity and signalling, for complete, complex installations, to predict the risk of interference and deterioration of the energy quality of the power supplied. A topological approach, such as that developed by dr. Carl Baum for electromagnetic fields, will be researched for power networks, in association with network simulation as well as mathematical approaches, for instance Hypersim . ESRs’ projects in this WP are:

ESR1 EM coexistence power electronic devices & communication systems

ESR5 EM coexistence

ESR9 EMC of electric vehicles and charging infrastructures

ESR12 Propagation and aggregation of interference including statistical properties

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