Search Results - "Rizov, Plamen"

Investigation of an Unsymmetrically Loaded High Power Synchronous Generator by Stoyanov, Tsvetomir, Rizov, Plamen

“…A combination of many factors affect the operation of high-power synchronous generators, and hence the quality of the electrical energy they produce. One of…”
Get full text

Assessment and Analysis of the Reliability of Insulation System for High-Voltage Induction Motors Based on the Partial Discharge Level by Rizov, Plamen, Todorov, George

“…The object of the paper is an experimental study and analysis of the reliability of the stator winding insulation of high voltage induction motors that have…”
Get full text

High Voltage Faults Conditions of In-House Loads of a Power Station by Totev, Valentin, Rizov, Plamen, Gueorgiev, Vultchan

“…Open circuit conditions which are not trivial to accurately locate can be detrimental to the operation of auxiliary equipment and in-house loads of a power…”
Get full text

Determination of the Leakege Parameters of Synchronous Hydrogenerators by Rizov, Plamen, Gueorgiev, Vultchan

“…An application of FEM for studying the leakage of stator slots of synchronous hydrogenerators is presented. The approach presented takes into account the…”
Get full text

Study of the dependence of the electromagnetic power on the load angle with account of the saturation of the magnetic circuit in synchronous generators by Rizov, Plamen, Spasov, Radoslav, Petrov, Vladislav

“…This paper describes an application of Finite Element Method (FEM) to study the dependance of electromagnetic power on the load angle of synchronous generators…”
Get full text

Power transformers supplied by non-sinusoidal voltages or supplying non-linear loads- problems and solutions by Stoyanov, Tsvetomir, Spasov, Radoslav, Rizov, Plamen

“…This article aims to present the power transformers supplied by non-sinusoidal voltages or supplying non-linear loads. A number of factors determine the use of…”
Get full text

RESEARCH OF THE FORCE EFFECT ON THE ROTOR WEDGES IN SYNCHRONOUS GENERATORS by Spasov, Radoslav, Rizov, Plamen, Petrov, Vladislav

“…This research presented in this paper is focused on the magnetic field in synchronous generators with high power, in which the rotor slots are open and the…”
Get full text

Real Time Monitoring of HV Electrical Machines Driving Powerful Pump Aggregates by GUEORGIEV, Vultchan, RIZOV, Plamen

“…The paper summarizes our experience in building a system for real time monitoring of electrical parameters of powerful pump aggregates. The pumping station…”
Get full text

Modelling of Own Needs' Equipment During Faults by Totev, Valentin, Ibram, Dzhengiz, Rizov, Plamen, Gueorgiev, Vultchan

“…The behaviour of a power station's own needs' power equipment during open circuit fault conditions is modelled and presented in this paper. The considered…”
Get full text

A Study on the Operation of Own Needs' Equipment Under Fault Conditions by Totev, Valentin, Ibram, Dzhengiz, Rizov, Plamen, Gueorgiev, Vultchan

“…A study on the operating regimes of own needs' power equipment under fault conditions has been performed. The purpose of the study is to investigate the…”
Get full text

Lighting in High Temperature Industrial Enviroment by Gueorgiev, Vultchan, Rizov, Plamen

“…The specifics of LED lighting in high temperature industrial environment is discussed in the paper. When industrial sites with very high ambient temperature…”
Get full text

Optimization of medium voltage backup power supply strategies for high power pump aggregates by Gueorgiev, Vultchan, Rizov, Plamen

“…There are industrial parties where huge quantities of water are used for cooling. The need of cooling at the same time is important part of the technology…”
Get full text

Influence of the excitation regime of turbo-generators on the own needs supply stable operation by Rizov, Plamen, Gueorgiev, Vultchan

“…An investigation on the reasons for failure of the own needs supply in one of the blocks of a big electrical power plant in Bulgaria has been presented. The…”
Get full text

Investigation of the Skewing of the slots in Permanent Magnet Synchronous Machines by Stoyanov, Tsvetomir, Spasov, Radoslav, Rizov, Plamen

“…This paper presents a study of slot skewing in a permanent magnet synchronous motor. Several cases are considered where the rotor is divided into multiple…”
Get full text

Regenerative braking of electric vehicles by Totev, Valentin, Gueorgiev, Vultchan, Rizov, Plamen

“…This paper presents a discussion about regenerative braking of electric vehicles (EVs). The paper is made with a purpose to inform in a concise way the essence…”
Get full text

Algorithm for Design and Analysis of Multilayer and Fractional-slot Stator Windings by Stoyanov, Tsvetomir, Pavlov, Dimitar, Spasov, Radoslav, Rizov, Plamen

“…Algorithm for design and analysis of multilayer and fractional-slot stator windings is the subject of this paper. Stator windings with different number of…”
Get full text

Reduction of the High Harmonics at the Electromagnetic Force and the Electromagnetic Torque in Synchronous Machines with Permanent Magnet by Stoyanov, Tsvetomir, Spasov, Radoslav, Rizov, Plamen

“…This paper presents the results from a study of permanent magnet synchronous machines, with magnets positioning in the rotor form like "V". The following types…”
Get full text

Analysis of Fractional-slot Permanent Magnet Synchronous Machines Used for Hybrid Vehicles by Stoyanov, Tsvetomir, Spasov, Radoslav, Rizov, Plamen

“…This work presents an investigation on electromagnetic torque and electromagnetic force computations in the air gap of a V-shape permanent magnet synchronous…”
Get full text

An Approach for Modeling the Electronic Converter-Motor System for Electric Vehicles by ZARKOV, Zahari, LAZAROV, Vladimir, RIZOV, Plamen, STOYANOV, Ludmil, POPOV, Encho

“…This paper presents an approach for modeling and simulation of drive system comprising an inverter and permanent magnet synchronous motor (PMSM) for…”
Get full text

Finite element analysis of rotating electrical machines - An educational approach by Stoev, Bozhidar, Todorov, George, Rizov, Plamen, Pagiatakis, Gerasimos, Dritsas, Leonidas

“…The paper presents the application of the Finite element method in teaching the fundamental theoretical aspects of rotating electrical machines to…”
Get full text