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This paper presents mathematical and physical model of permanent magnet synchronous machine which enable simulation and experimental studies of various dynamic modes of operation of electric vehicle in laboratory environment. The mathematical model is realized in Matlab programming language. It provides useful information for investigation of the dynamic modes including control strategies related...
The paper examines the errors occurring in power loss evaluation for electrical distribution networks as a result of the different (increased) duration of the time discretization intervals used for the step approximation of the load profiles of the supplied consumers. The relation between these errors and the magnitude of the index called “form factor” is also a subject of interest. Using the estimations...
This paper presents the modelling and control of a grid-connected PV system in LabVIEW environment. The proposed control system provides interactivity with the grid: the control system features communication with the grid operator and thus it is able to operate either in maximum power point tracking (MPPT) or in limited power point tracking (LPPT). The second is useful in certain cases when there...
This article presents an approach for flexible loads control in power systems with integration of electric vehicles (EV) and distributed generation for power system regulation. A control system with monitoring and control capabilities is proposed as a possible solution of the main problematic issues related to EV charging. IEC61850 standard is covered for data transfer between local and global monitoring...
This article presents a novel control concept, operation paradigm and electricity market model for distribution networks with electric vehicles (EV) and Distributed Energy Resources (DER). An analysis of the presently existing control strategies, market models and EV characteristics is made. Taking into account the main drawbacks of the existing solutions a novel distributed control concept for power...
This article presents an estimation of the impact of distributed energy resources (DER) on the electrical network power losses. Using novel quasi-dynamic analytical approach the contribution of the distributed generation (DG) to the network power losses is estimated. Slow dynamics simulations are performed on differently controlled DG in order to clarify the importance and the impact of different...
This article presents concept, strategy and realization of primary power control for small hydraulic generators operating in autonomous, micro and minigrids. Based on field measurements and software simulations analysis on the current state of the art control strategies is made. A new improved active power control strategy is presented as suitable to overcome the main drawbacks of the current control...
One main issue in current research activities regarding power distribution networks is the grid operation with a high penetration of Distributed Energy Resources (DER), particularly renewable sources from wind, solar or biomass, characterized by intermittent and only partially predictable production. In fact, in order to keep power quality and grid stability in presence of great amount of variable...
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