Istvan Szenasy

25927578200

Publications - 13

Induction Motor Energy Efficiency Investigation †

Istvan Szenasy Dániel Csikor

Publication Name: Engineering Proceedings

Publication Date: 2024-01-01

Volume: 79

Issue: 1

Page Range: Unknown

Description:

The energy efficiency of the induction motor (IM) is extremely important in the drives of electric vehicles. The first part of the article examines the possibilities of modifying the torque and efficiency curves in order to realize high-torque work points more efficiently by modifying the motor’s impedances. Later, it analyzes the flux-dependent changes in the highly load-dependent efficiency based on the literature. The FEM-type investigations of the experimental IM development carried out at the Vehicle Industry Research Center Institute of the Széchenyi István University offer new control options for increasing the efficiency of work points with lower torque and speed as well as for modifying the examined torque curve sections.

Open Access: Yes

DOI: 10.3390/engproc2024079075

Features of segment winded PMSM for a low voltage supply system

Istvan Szenasy Zoltan Varga

Publication Name: 2017 3rd International Conference on Control Automation and Robotics Iccar 2017

Publication Date: 2017-06-07

Volume: Unknown

Issue: Unknown

Page Range: 523-528

Description:

This paper presents a symmetric winded PMSM which is connected by all in part coil to a supply system at low voltage of 48-100 V DC, developed by Research Center of Vehicle Industry in Szechenyi University. It has several benefits of this winding system its separate supply. The motor construction is slightly different from the general constructions; its running and control are different but on the whole offers new availabilities and prosperous solutions as well as electrical motor features. The paper presents some results of investigations mainly in the control for this divided kind of PMSM which was patented in 2014.

Open Access: Yes

DOI: 10.1109/ICCAR.2017.7942752

Features of segment winded PMSM for a low voltage supply system

Istvan Szenasy Zoltan Varga B. Kollar

Publication Name: 2016 International Conference on Electrical Systems for Aircraft Railway Ship Propulsion and Road Vehicles and International Transportation Electrification Conference Esars Itec 2016

Publication Date: 2016-01-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

This paper presents a symmetric winded PMSM which is connected by all in part coil to a supply system at low voltage of 48-100 V DC, developed by Research Center of Vehicle Industry in Szechenyi University. It has several benefits of this winding system its separate supply. The motor construction is slightly different from the general constructions; its running and control are different but on the whole offers new availabilities and prosperous solutions as well as electrical motor features. The paper presents some results of investigations mainly in the control for this divided kind of PMSM which was patented in 2014.

Open Access: Yes

DOI: 10.1109/ESARS-ITEC.2016.7841327

Optimum control strategy for PMSM in field-weakening region by constant power

Istvan Szenasy Zoltan Szeli Zoltan Varga

Publication Name: Electrical Systems for Aircraft Railway and Ship Propulsion Esars

Publication Date: 2015-05-04

Volume: 2015-May

Issue: Unknown

Page Range: Unknown

Description:

For electric vehicles an applied control of PMSM is the flux weakening operation for extending the region over nominal speed on nominal voltage. This paper deals with these questions and its impacts. Proved methods increase the torque angle and the d axis directed component of the stator current vector reduces the main flux, but the eddy current loss developing in magnets became significant. These impacts and their reduction need several investigations. This paper preents the possibilities and limits of flux-weakening for a given PMSM, and gives a usable optimum control strategy on nominal power's region by varied speeds.

Open Access: Yes

DOI: 10.1109/ESARS.2015.7101435

A control strategy to minimize magnet losses in vehicle PMSM by field-weakening operation

Istvan Szenasy Zoltan Szeli Zoltan Varga Peter Koros

Publication Name: 2013 World Electric Vehicle Symposium and Exhibition Evs 2014

Publication Date: 2014-10-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

An applied control of PMSM is the flux weakening operation for extending the region over nominal speed on nominal voltage. This paper deals with these questions and its impacts. The proved method increases the torque angle and with this the d axis directed component of the stator current vector for reduce the main flux, but the loss developing in magnets became significant. These impacts and its reduction need several investigations. Our work indicates the possibilities and limits of flux-weakening for a given PMSM, and a usable control strategy.

Open Access: Yes

DOI: 10.1109/EVS.2013.6915035

Capacitive and hybrid energy storages for metro railcars

Istvan Szenasy

Publication Name: 2013 IEEE International Electric Vehicle Conference Ievc 2013

Publication Date: 2013-12-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

In this paper the simulation models by Matlab for an urban-metro railcar and some newer methods for reducing the need value of capacitance for energy storage are presented. The achievable decreasing ratio of the needed energy storage at SCAP is 25 to 40 % with this improved energy control method. It was been investigated the supercapacitor and the Li-ion battery as hybrid energy storage system and its effectiveness under operation of a suitable energy control system. Mass reduction of our hybrid storage system is significant. © 2013 IEEE.

Open Access: Yes

DOI: 10.1109/IEVC.2013.6681139

Magnet losses of fractional number slots per pole PMSM in flux weakening operation

Istvan Szenasy

Publication Name: Proceedings of the International Conference on Power Electronics and Drive Systems

Publication Date: 2013-08-01

Volume: Unknown

Issue: Unknown

Page Range: 761-766

Description:

An applied control the PMSM is the flux weakening operation for extending the region over nominal speed but on nominal voltage. This paper deals with these questions and its impacts. The proved method is increasing the torque angle and with this the d axis directed component of the stator current vector for reduce the main flux, but the loss developing in magnets became significant. These impacts and its reduction need several investigations. Our work indicates the possibilities and limits of flux-weakening for a given PMSM, and a usable control strategy. © 2013 IEEE.

Open Access: Yes

DOI: 10.1109/PEDS.2013.6527119

New energy management and hybrid energy storage for metro railcar

Istvan Szenasy

Publication Name: 26th Electric Vehicle Symposium 2012 Evs 2012

Publication Date: 2012-12-01

Volume: 4

Issue: Unknown

Page Range: 2734-2742

Description:

This paper focuses on the use of model and simulation one of renewable energy. In this paper the results of simulation models by Matlab-Simulink for an urban-metro railcar and some newer methods for reducing the need value of capacitance for energy storage in cooperation by a Li-ion battery are presented. In this research was been investigated the Li-ion battery and the supercapacitor as hybrid energy storing device for the same task and its effectivness under operation of a suitable energy control system. The available decreasing ratio of the needed energy storage at case SCAP is 25 % to 40 % with this improved energy control method, which are significant values as decreasing in volume, mass and price. Mass reduction of our hybrid storage system is significant, about 60%.

Open Access: Yes

DOI: DOI not available

Energy management and hybrid energy storage in metro railcar

Istvan Szenasy

Publication Name: 2012 International Conference on Renewable Energy Research and Applications Icrera 2012

Publication Date: 2012-12-01

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

This paper focuses on the use of modeling and simulation one of renewable energy. © 2012 IEEE.

Open Access: Yes

DOI: 10.1109/ICRERA.2012.6477423

Improved energy management of capacitive energy storage in metro railcar by simulation

Istvan Szenasy

Publication Name: Renewable Energy and Power Quality Journal

Publication Date: 2010-04-01

Volume: 1

Issue: 8

Page Range: 757-762

Description:

This paper focuses on the use of modeling and simulation of a renewable energy. The capacitive energy storages contribute to the rapid energy recovery associated with regenerative braking in electric vehicles. This power system allows the acceleration and deceleration of the vehicle with a lower loss of energy. Short-distance passenger traffic on electrified lines is a domain where brake energy recuperation might reduce the total energy consumption significantly. In this paper the results of simulation models by Matlab-Simulink for an urban-metro railcar and some methods for reducing the needed value of capacitance by an improved energy management are presented. The aim of the new management of the energy storage system for decreasing the needed value of capacitance and improving the system performance is presented.

Open Access: Yes

DOI: 10.24084/repqj08.464

New energy management of capacitive energy storage in metro railcar by simulation

Istvan Szenasy

Publication Name: 5th IEEE Vehicle Power and Propulsion Conference Vppc 09

Publication Date: 2009-12-23

Volume: Unknown

Issue: Unknown

Page Range: 181-187

Description:

This paper focuses on the use of modeling and simulation of a renewable energy. The capacitive energy storages contribute to the rapid energy recovery associated with regenerative braking in electric vehicles. This power system allows the acceleration and deceleration of the vehicle with a lower loss of energy. Short-distance passenger traffic on electrified lines is a domain where brake energy recuperation might reduce the total energy consumption significantly. In this paper the results of simulation models by Matlab-Simulink for an urban-metro railcar and some methods for reducing the needed value of capacitance are presented. The aim of the new management of the energy storage system for decreasing the needed value of capacitance and improving the system performance is presented. © 2009 IEEE.

Open Access: Yes

DOI: 10.1109/VPPC.2009.5289852

Improvement the energy storage with ultracapacitor in metro railcar by modeling and simulation

Istvan Szenasy

Publication Name: 2008 IEEE Vehicle Power and Propulsion Conference Vppc 2008

Publication Date: 2008-12-29

Volume: Unknown

Issue: Unknown

Page Range: Unknown

Description:

This paper focuses on the use of modeling and simulation for the renewable energy. An energy storage system for improving performance of electric vehicles is presented. The supercapacitor contributes to the rapid energy recovery associated with regenerative braking in electric vehicles. This power system allows the acceleration and deceleration of the vehicle with minimal loss of energy. Short-distance passenger traffic on electrified lines is a domain where brake energy recuperation might reduce the total energy consumption significantly. In this paper the results of simulation model by Matlab-Simulink for an urbanmetro railcar and the method for reduce the need value of capacitance are presented. © 2008 IEEE.

Open Access: Yes

DOI: 10.1109/VPPC.2008.4677664

Modeling and simulation for the energy storage by ultracapacitor in urban rail car

Istvan Szenasy

Publication Name: 3rd International Conference on Electrical and Control Technologies ECT 2008

Publication Date: 2008-01-01

Volume: Unknown

Issue: Unknown

Page Range: 239-242

Description:

This paper focuses on the use of modeling and simulation for the renewable energy. An energy storage system for improving performance of electric vehicles is presented. The supercapacitor contributes to the rapid energy recovery associated with regenerative braking in electric vehicles. This power system allows the acceleration and deceleration of the vehicle with minimal loss of energy. Short-distance passenger traffic on electrified lines is a domain where brake energy recuperation might reduce the total energy consumption significantly. In this paper the results of a simulation model by Matlab for an urban-metro railcar is presented.

Open Access: Yes

DOI: DOI not available