Papers by Maja Kukuseva Paneva
In this paper M/M/c queuing model is considered and applied to solve a problem in a supermarket w... more In this paper M/M/c queuing model is considered and applied to solve a problem in a supermarket when are generated crowds by buyers on the cash boxes. The model of the supermarket has three cash-settling boxes and one queue created from buyers. The performance of the supermarket is analyzed using three cash boxes with arriving rate of 50 customers/ hour and service rate 18 customers/ hour. Also, it is considered whether if is necessary to include additional cash boxes in order to reduce the waiting queue and time
Sine Inverter System Based on Special Circuit
In this paper, based on a specific example of an ASIC (Application Specific Integrated Circuit) i... more In this paper, based on a specific example of an ASIC (Application Specific Integrated Circuit) integrated circuit, the impact of the development of microelectronics in the application of these circuits in power electronics is considered. By applying this type of integrated circuit, by simply connecting its input pins to low or high potential, the operating mode of the circuit is defined, and thus, the operating mode of the power converter. In this paper, first it is described the characteristics of the circuit, and then experimentally obtained results from the test- prototype inverter in which this integrated circuit is built are given
Calculation for Phase Angle at RL Circuit Supplied with Square Voltage Pulse
The serial connection of resistor R and inductance L is a basic electronic circuit. This circuit ... more The serial connection of resistor R and inductance L is a basic electronic circuit. This circuit is main circuit in industrial power consumers such as electric motors, induction furnaces, welding devices and other electrical consumers. In the paper analysis of serial RL- circuit supplied by the square voltage pulse is made. The equations for maximum current, time equivalent and phase angle in the serial RL- circuit are derived. For verification of theoretical calculations, a prototype of the bridge converter based on AMega 328P microcontroller was designed. Also, the voltages waveforms in the circuit are represented
Investigating Efficiency Aspects in 3×3 Photovoltaic Plant Using Model of Shading
This paper presents performances of two different types of PV cells under various temperature cli... more This paper presents performances of two different types of PV cells under various temperature clime of Stip, R. Macedonia. Stip with geographical position 41 .742N, 22.1 94E has 2260 sun hours yearly with average temperature 25 °C during spring. The types of cells examined in this study are: crystalline silicone (c-Si) and polycrystalline silicon (p-Si). The calculations are made for various operating conditions and a comparation of I-V and P-V characteristics are represented here. Also, the efficiency and fill factor for photovoltaic (PV) cells is calculated based on simulation results.
This paper presents performances of two different types of PV cells under various temperature cli... more This paper presents performances of two different types of PV cells under various temperature clime of Stip, R. Macedonia. Stip with geographical position 41 .742N, 22.1 94E has 2260 sun hours yearly with average temperature 25 °C during spring. The types of cells examined in this study are: crystalline silicone (c-Si) and polycrystalline silicon (p-Si). The calculations are made for various operating conditions and a comparation of I-V and P-V characteristics are represented here. Also, the efficiency and fill factor for photovoltaic (PV) cells is calculated based on simulation results.
FEMM како едукативна алатка за решавање на проблеми од електромагнетизам
Application of Second- Order Nonhompgeneous Differential Equation with Constant Coefficients in Serial RL Parallel C Circuit
In this paper a solution of second order differential equation and its real usage in analyzing el... more In this paper a solution of second order differential equation and its real usage in analyzing electronic circuits is represented. First, a mathematical analysis of the differential equation is made, and then its solution to a particular case is used to analyze serial RL parallel C resonant circuit. Results of simulations about the currents and voltages in the circuit also represented
Comparation and possibilities of QKD techniques
Design and practical implementation of a control circuit for driving bridge converters’ switches ... more Design and practical implementation of a control circuit for driving bridge converters’ switches is presented in this paper. The power converter is loaded with series resonant tank and is used for induction heating of metals. By varying the output voltage duty cycle we achieve output power regulation. Digital integrated circuits are used for the design.
The paper suggests introducing modified OSPF protocol, with a kind of command protocol between ne... more The paper suggests introducing modified OSPF protocol, with a kind of command protocol between neighboring routers for exchange of some control data. This paper describes the implementation of a new module in NCTUns simulator, for a previously proposed routing protocol. The NCTUns network simulator and emulator is a high-fidelity and extensible network simulator capable of simulating various devices and protocols used in both wired and wireless networks. It uses an open-system architecture to enable protocol modules to be easily added to the simulator. Consequently, the implementation of the proposed routing protocol is expected to enable comparison of the proposed routing protocol with current routing protocols and eventually show performance improvement. Keywords - routing, modified OSPF protocol, computer networks, NCTUNS network simulator.
Wireless Sensor Networks are new emerging technology used in various applications for habitat, he... more Wireless Sensor Networks are new emerging technology used in various applications for habitat, health and air pollution monitoring, vehicle tracking etc. Every sensor node is powered with battery that must last for mounts or years which constrains the WSN in term of energy used. Other critical issue is the secure communication between the nodes and the deployment of cryptography method is challenging task. Elliptic Curve Cryptography (ECC) is low-power consuming cryptographic scheme that combines high-level of security and low power usage for key generation and its distribution through the network.
FEMM како едукативна алатка за решавање на проблеми од електромагнетизам
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Papers by Maja Kukuseva Paneva