Babunski, Darko
Preferred name
Babunski, Darko
Official Name
Babunski, Darko
Main Affiliation
Email
darko.babunski@mf.edu.mk
53 results
Now showing 1 - 10 of 53
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Item type:Publication, Improving Energy Efficiency of the Hydraulic Power Systems in Heavy Machinery(University Library in Kragujevac, 2020); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Energy flexibility scenarios for North Macedonia(International Association for Hydro-Environment Engineering and Research (IAHR), 2022); ; ; The Paris Agreement signed in 2015, unites nearly 200 countries on the goal of limiting global warming and lowering carbon emissions. The goal of lowering carbon emissions can mainly be achieved by lowering fossil fuels within the energy sector since their use in electricity generation is a significant contributor to greenhouse gas emissions. This is why European countries, as well as North Macedonia, are planning to reduce the amount of climate-damaging fossil-fueled power plants, but to cover electricity demand, the share of renewable energies (in North Macedonia mostly wind and solar energy, here addressed as intermittent renewable energy sources - IRES) within their power systems must be increased. Changing power systems and including higher shares of IRES will increase imbalances and thus the need for flexibility (refers to means able to balance electricity supply and demand). Imbalances have always occurred in power systems, resulting from various reasons, and power systems are able to react with flexibility. Considered options, categorized into four kinds of flexibility (dispatchable generation, demand side management, increased interconnection, and energy storage), all offer possibilities to balance the systems by different approaches. Although all providing individual advantages, hydropower, especially pumped storage hydropower, was identified in this paper to be a very flexible, diverse option and a technology capable of meeting flexibility challenges set by the increase of IRES. The need for flexibility in the hydropower production could be improved using variable-speed turbines instead of multiple start-stops depending on the grid demand. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design of Pressure Control for Optimal Damping in Individual Metering Systems(Linkoping University Electronic Press, Sweden, 2021-06); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Isolating Interface for Water Quality Sensors Based on Flying Capacitor Principle(IEEE, 2025-06-10); ; In a water quality monitoring project several sensors have electrical contact to each other due to water conductivity. Galvanic isolation is required to avoid electrical interference, which is established in this work by flying capacitor principle. Simultaneously this also provides channel multiplexing for use of a single analog-to-digital converter (ADC). By nature of the circuit, it is the task to measure a decaying voltage caused by capacitor discharge. An error analysis of this situation is given. Furthermore, the usage of an industrial ADC with finite input resistance, built-in lowpass filter, and serial communication with uncertain time behaviour results in additional measurement errors. A method is proposed how to get a measurement under this conditions with acceptable and predictable errors. Finally the analysis is verified with simulation and laboratory measurements. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Verification of nonlinear hydro power plant models using real plant measurements(Energetika 2016, list saveza energeticara Srbije, broj 3-4 mart 2016, pp 136-141, 2016-03); ; ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Measurement of water quality parameters using the spectrophotometry method(University of Niš, Faculty of Mechanical Engineering, Niš, 2024-10); ; ; ; Koleva, MagdalenaHaving quality drinking water is a leading factor in maintaining public health, environmental protection, and the promotion of sustainable development in industrial and agricultural needs. Measurement and analysis of chemical parameters in drinking water are crucial for ensuring the safety and quality of water for public health. This research was conducted using the spectrophotometry method including a UVVIS DR 6000 HACH Lange spectrophotometer with a wavelength range of 190 to 1100 nm and a highspeed temperature thermostat HT 200 S. Chemical parameters that are measured in this research are chlorides, nitrates, nitrites, potassium, phosphates, and ammonium. All of them are measured on a different wavelength. Samples were taken from three measuring points, all of which are used as drinking water sources and irrigation in the nearby villages. One measuring point is a thermal spring and the other two springs from the foot of a mountain. The water from all three water sources is considerable drinking water. One sample is taken from Vardar River and its water is considered as non-drinking. The results of all measured parameters will be represented through a table and bar graphic chart. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, IoT System for Real-Time Water Quality Measurement and Data Visualization(IEEE, 2023-06-06); ; ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Co-simulation of the Inverted Pendulum System using Labview and Solidworks(IEEE, 2019-06); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design of Optimal Control Model for Cascade Hydro Power Plants(SAVEZ ENERGETIČARA SRBIJE, 2020-06); ; Hydro energy represents big challenge in development of the whole society. Hydro energy plants are environment friendly, without big influence to the water, air and soil. Additionally, dams are providing benefits in form of flood control, water distribution systems for drinking and agriculture purposes. Hydro energy obtained from Hydro Power Plants (HPP) is very flexible in relation to fast changes in Energy system, with very fast starting time which make energy system more stable and secure, with higher efficiency. In this paper analysis of the optimal exploitation of the cascade HPPs, with hydraulically connected water reservoirs is made. Used optimization technique leads to design of optimal control for cascade HPPs, according to higher efficiency coefficient related to production of most energy with optimal water flow thru turbines of the HPPs, without affecting the environment.