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Medium frequency transformers are an essential part of new energy conversion systems, and are very often subject to non-sinusoidal excitation. Therefore, usual methods to represent magnetic materials behavior inside transformers with electrical equivalent scheme are very limited in this case. This paper focuses on the development of a new model based on the loss separation method. This model is implemented...
This work presents development of a prototype for the automatic engraving machine. The proposed system controlled using computer, by setting drawing for engrave. Constructed prototype consists of XYZ coordinates table (working area), where XY for position in the engraving area and Z axis for establish little driller. Arduino board has been chosen as a controller. Movements of the machine are generated...
In recent years the simulation tools have been optimized for precise modelling and simulation for their special purpose. Therefore the simulation tools have been developed to model and simulate a certain problem. In the past, the hardware was used to be modeled in a SPICE simulator, the software in a signal and differential equation based simulator. Nowadays the investigated systems are decreasingly...
Power system simulation software is a useful tool for teaching the fundamentals of power system design and operation. However, existing commercial packages are not ideal for teaching work-based students because of high-cost, complexity of the software and licensing restrictions. This paper describes a set of power systems libraries that have been developed for use with the free, student-edition of...
The paper proposes an approach for easy and fast modelling and optimization of power electronics structures. It focuses on the EMC filter design. To achieve this task for electrical drives, a full EMC modelling of the application is defined by combining time simulation (or measurements), FFT and system modelling in the frequency domain. A modular description in a user friendly environment allows describing...
This paper presents a few examples of the possibility of effective use of open-source simulation tools within the project gsim to solve the problems of the electronics in educational and professional practice. The fundamental difference with regard to commercial products are open file and data formats, the possibility of creating own components and macro models. An essential advantage is the easy...
Some modelling methods and associated tools are presented in this paper to efficiently and accurately simulate the electromagnetic behaviour of power electronic structures. Moreover, as engineers have to face new challenges, the synergy between simulation tools is illustrated as a possible solution for addressing this "multiphysic" topic. The article is also pictured of several application...
Hardware fault-insertion test (FIT) is a promising method for system reliability test and diagnosis coverage measurement. It improves the speed of releasing a quality diagnostic program before manufacturing and provides feedbacks of fault tolerance of a very complicated large system. Certain level insufficient fault tolerance can be fixed in the current system but others may require ASIC or overall...
This paper proposes one possible method for modelling silicon based RF meander type inductors. Based on the presented electrical model specialised software (Helix Meta2) for obtaining inductor electrical parameters is developed. In order to verify simulation results test inductor structures are fabricated in the standard silicon technology. Their characteristics simulated with Helix Meta2 are compared...
The electric power generation using hydro potential is increasing around the globe due to many reasons like increasing power demand, deregulated markets, and environmental concerns etc. At the same time, extended transmission networks, higher degrees of interconnection between different networks, and fast connection and disconnection of the heavy loads demand flexible, fast power generation and consumption...
A free SPICE version allowing general circuit simulation is used teaching power electronics. There is no lock on the circuit size, stabile and user friendly operation is experienced. A collection of transformer, converter and drive system models are implemented to investigate the usability of the programme in high power electronics.
A formalism for modeling hybrid dynamical systems is presented. Unlike most work on hybrid dynamical systems where the objective of model construction is system analysis and controller synthesis, the objective here is to construct a formalism suited for modular model construction and simulation. This formalism is used in the open-source modeling and simulation software Scicos
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