Milutin Petronijević
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View article: POSSIBILITY OF PRODUCING PHOTOVOLTAIC ELECTRICITY ON BALCONY FENCE IN PIROT, SERBIA
POSSIBILITY OF PRODUCING PHOTOVOLTAIC ELECTRICITY ON BALCONY FENCE IN PIROT, SERBIA Open
In urban environments, PV panels are usually affixed on available buildings, but they can also be included in the initial architectural design of the constructions. PV panels mounting on/as balcony fences become frequent solution for creat…
View article: Evaluation of Photovoltaic Inverters According to Output Current Distortion in a Steady-State and Maximum Power Point Tracking
Evaluation of Photovoltaic Inverters According to Output Current Distortion in a Steady-State and Maximum Power Point Tracking Open
The limits of direct current (DC) injection and output current distortion of grid-connected photovoltaic (PV) inverters are specified in the IEEE 1547-2018 standard. The standard prescribes limits of output current harmonics, but the input…
View article: REPETITIVE RIPPLE ESTIMATOR FILTER BASED PHASE-LOCKED LOOP
REPETITIVE RIPPLE ESTIMATOR FILTER BASED PHASE-LOCKED LOOP Open
In this paper, a novel phase-locked loop is presented based on a repetitive ripple estimator filter. The primary application of the presented phase-locked loop is in the monitoring of three-phase grid voltages and synchronization of grid c…
View article: THE INFLUENCE OF SAFETY DIODES ON THE CHARACTERISTICS OF THE PHOTOVOLTAIC PANELS UNDER NON-UNIFORM ENVIRONMENTAL CONDITIONS
THE INFLUENCE OF SAFETY DIODES ON THE CHARACTERISTICS OF THE PHOTOVOLTAIC PANELS UNDER NON-UNIFORM ENVIRONMENTAL CONDITIONS Open
The operation of photovoltaic systems depends on the environmental conditions, which affect the current-voltage characteristics of photovoltaic modules and more complex structures. Under non-uniform environmental conditions - different ill…
View article: Frequency and voltage communication-less control for islanded AC microgrids: Experimental validation via rapid control prototyping
Frequency and voltage communication-less control for islanded AC microgrids: Experimental validation via rapid control prototyping Open
The energy transition is becoming one of the main challenges in recent years and it requires a fast discovery of new technologies and solutions to effectively integrate renewables in the electricity system. In this context, islanded AC Mic…
View article: SKEW CONTROL OF RAIL MOUNTED WIDE SPAN MULTI-MOTOR DRIVES
SKEW CONTROL OF RAIL MOUNTED WIDE SPAN MULTI-MOTOR DRIVES Open
In this paper, the construction skewing problem of rail mounted wide span multi-motor drives is considered. A new skew control algorithm is proposed, and the controller design is analyzed in detail. Additionally, a PLC program algorithm fo…
View article: Voltage root mean square error calculation for solar cell parameter estimation: A novel g-function approach
Voltage root mean square error calculation for solar cell parameter estimation: A novel g-function approach Open
The existing research on estimating solar cell parameters mainly focuses on minimizing the Root-Mean-Square Error (RMSE) between the estimated and measured current values of solar cells (referred to as the RMSE I ). This involves using an …
View article: Disturbance Compensation in Discrete-Time Sliding Mode Control – A Comparative Study
Disturbance Compensation in Discrete-Time Sliding Mode Control – A Comparative Study Open
This work is intended to compare three methods for disturbances estimation and compensation in discrete-time variable structure systems with sliding modes. All methods detect disturbance, which appear in control channel, with time delay of…
View article: Predictive discrete‐time sliding mode based direct power control for grid‐connected energy conversion systems
Predictive discrete‐time sliding mode based direct power control for grid‐connected energy conversion systems Open
A method for digital direct power control design for grid‐connected energy conversion systems was proposed in this paper. The active and reactive powers are directly controlled with constant switching frequency by selecting an appropriate …
View article: Discrete time quasi-sliding mode-based control of LCL grid inverters
Discrete time quasi-sliding mode-based control of LCL grid inverters Open
Application of a discrete time (DT) sliding mode controller (SMC) in the control structure of the primary controller of a three-phase LCL grid inverter is presented. The design of the inverter side current control loop is performed using a…
View article: Optimal Design and Control of Multi-Motor Drive System for Industrial Application
Optimal Design and Control of Multi-Motor Drive System for Industrial Application Open
In this paper, the topology of the adjustable speed drive with active front end rectifier is considered in terms of application in multi-motor drives.A dynamic model of the rectifier with a coupled LCL filter is presented.A simulation mode…
View article: Electrical Drives Control via Discrete-Time Variable Structure Systems with Sliding Mode
Electrical Drives Control via Discrete-Time Variable Structure Systems with Sliding Mode Open
Modern control techniques of electrical drives (EDs) use robust control algorithms. One of such algorithms is variable structure control (VSC) with sliding mode (SM). SM control needs more information on the controlled plant than the conve…
View article: An MPC Approach for Grid-Forming Inverters: Theory and Experiment
An MPC Approach for Grid-Forming Inverters: Theory and Experiment Open
Microgrids (MGs) interest is growing very fast due to the environment urgency and their capability to integrate renewable energy in a flexible way. In particular, islanded MGs in which distributed energy resources (DERs) are connected to t…
View article: A Building Block Method for Modeling and Small-Signal Stability Analysis of the Autonomous Microgrid Operation
A Building Block Method for Modeling and Small-Signal Stability Analysis of the Autonomous Microgrid Operation Open
The task of the whole microgrid state-space matrix creation is usually done in a preferred textual programming language, and it presents a complicated, time-consuming, and error-prone job for a researcher without good coding practices. To …
View article: Discrete-time sliding mode control of linear systems with input saturation
Discrete-time sliding mode control of linear systems with input saturation Open
The paper proposes a discrete-time sliding mode controller for single input linear dynamical systems, under requirements of the fast response without overshoot and strong robustness to matched disturbances. The system input saturation is i…
View article: A Novel Repetitive Control Enhanced Phase-Locked Loop for Synchronization of Three-Phase Grid-Connected Converters
A Novel Repetitive Control Enhanced Phase-Locked Loop for Synchronization of Three-Phase Grid-Connected Converters Open
This paper proposes the enhancement of a synchronous reference frame phase-locked loop in terms of its dynamic response and disturbance rejection capability. The improvements were undertaken in order to upgrade the converter grid support c…
View article: Benchmarking of phase lock loop based synchronization algorithms for grid-tied inverter
Benchmarking of phase lock loop based synchronization algorithms for grid-tied inverter Open
In renewable energy-based generation sources a phase locked loop is one of the most popular synchronization techniques. A rapid and precise grid voltage phase and frequency estimation under a wide spectrum of possible grid disturbances is …
View article: VOLTAGE SAG SENSITIVITY OF INDUSTRIAL VECTOR CONTROLLED INDUCTION MOTOR DRIVES – A COMPARATIVE STUDY
VOLTAGE SAG SENSITIVITY OF INDUSTRIAL VECTOR CONTROLLED INDUCTION MOTOR DRIVES – A COMPARATIVE STUDY Open
Sensitivity of adjustable speed drives (ASDs) on voltage sag events represents one of the most challenging problems in modern industrial facilities. In this paper, a comprehensive experimental verification of vector-controlled ASDs is cond…
View article: THE MONOSPIRAL MOTORISED CABLE REEL IN CRANE APPLICATIONS
THE MONOSPIRAL MOTORISED CABLE REEL IN CRANE APPLICATIONS Open
The main consideration of any reeling system is the effect it has on cable tensions and hence cable life. This paper explains the relationship of reel torque to cable tensions and the reasons why this relationship is so important. Such sys…
View article: An Improved Scheme for Voltage Sag Override in Direct Torque Controlled Induction Motor Drives
An Improved Scheme for Voltage Sag Override in Direct Torque Controlled Induction Motor Drives Open
This paper analyses symmetrical and unsymmetrical voltage sag effects on the torque and speed deviation in direct torque controlled (DTC) induction motors (IMs) for adjustable speed drives (ASDs). The capability of an ASD for continuous no…