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High frequency signal integrity analysis in the transmission lines is a mandatory activity for engineers in the modern electronics technologies, analogue and digital as well. Thus because of continuously increasing of the signal speed in the transmissions lines is a must to ensure the signal is transferred from source to the destination with respect via cables in respect to the international Electromagnetic...
This paper focuses on the differences between an ideal and a real electrical circuit diagram of a step-down dc-dc converter and their influences on the converter operation. For each diagram the circuit equations are obtained, processed accordingly and implemented in new created programs. The resulted waveforms are discussed and some conclusions are depicted.
A medium/low voltage transformer from a distribution substation for urban transports operating in a highly distorting regime is analyzed. Regimes of idle running, running with non-linear load, respectively fault (short-circuit) are presented from the theoretical point of view. The results yielded by their operation simulation using MATLAB / SIMULINK are discussed. Aspects related to the measurement...
The paper deals with the modeling and simulation of conducted emissions from a buck converter switch mode power supply which operates at a switching frequency of 100 kHz. The design of a buck converter is also presented, its operation being afterward simulated. The corresponding waveforms demonstrate the proper operation. The switch control is performed with a 0.5% duty cycle PWM technique. The studied...
The paper deals with a prototype for a small power system used for distributed generation. The system contains a group motor-generator that uses a static power converter controlled with the interface board and the modular system dSpace, for a power of almost 7 kW and can be used in modern power systems - including those for the electric driving of urban vehicles. The system's main components are presented:...
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