The Experts below are selected from a list of 14844 Experts worldwide ranked by ideXlab platform
N. Margaris - One of the best experts on this subject based on the ideXlab platform.
-
Loss Minimization in vector controlled interior permanent magnet synchronous motor drives
IEEE Transactions on Industrial Electronics, 2002Co-Authors: Christos Mademlis, N. MargarisAbstract:An efficiency optimization method for vector-controlled interior permanent-magnet synchronous motor drives is presented. Based on theoretical analysis, a Loss Minimization condition that determines the optimal d-axis component of the armature current is derived. Selected experimental results are presented to validate the effectiveness of the proposed control method.
-
Loss Minimization in surface permanent-magnet synchronous motor drives
IEEE Transactions on Industrial Electronics, 2000Co-Authors: Christos Mademlis, J. Xypteras, N. MargarisAbstract:The Loss Minimization in surface permanent-magnet synchronous motor drives is investigated. Based on theoretical analysis, a Loss model controller is introduced to specify the optimal air-gap flux that minimizes Losses. Theoretical results are verified experimentally. The proposed Loss model controller is simple and does not adversely affect the cost and complexity of the drive. Implementation of the Loss model controller does not require knowledge of the Loss model. The suggested Loss Minimization method can be applied both in V/f- or current-controlled schemes.
-
Magnetic and thermal performance of a synchronous motor under Loss Minimization control
IEEE Transactions on Energy Conversion, 2000Co-Authors: Christos Mademlis, N. Margaris, J. XypterasAbstract:The steady state magnetic and thermal performance of a wound-field cylindrical rotor synchronous motor under Loss Minimization control is investigated. The calculated magnetic field waveforms are presented and it is shown that Loss Minimization control decreases the magnetic saturation. It is also proved that although the optimal stator current is increased, the temperature is decreased in all parts of the motor. Theoretical and experimental results are presented to verify the operational improvements.
-
Loss Minimization in scalar-controlled induction motor drives with search controllers
IEEE Transactions on Power Electronics, 1996Co-Authors: I. Kioskeridis, N. MargarisAbstract:Loss Minimization in scalar-controlled induction motor drives (IMD) with search controllers (SC) is investigated. The problems arising when the input power is used as the controlled variable are described. It is proved that better results are achieved if the stator current is used as the controlled variable.
-
Loss Minimization in DC drives
IEEE Transactions on Industrial Electronics, 1991Co-Authors: N. Margaris, T. Goutas, Zoe Doulgeri, A. PaschaliAbstract:A method for determining the optimal DC machine excitation for Loss Minimization is presented. The proposed method may be implemented by using either analog or digital techniques. The method is simple, and its implementation does not affect significantly the cost, the complexity, and the dynamics of the DC drive. Thus, energy can be saved without sacrificing the quality of the DC drive. Even though the conception of the proposed method is based on the Loss model of the DC machine, it is shown that its realization does not require knowledge of the Loss model. >
Takaharu Takeshita - One of the best experts on this subject based on the ideXlab platform.
-
Copper Loss Minimization Control of IPMSM for Engine Torque Emulators
2020 International Conference on Electrical Machines (ICEM), 2020Co-Authors: S. Yamanaka, Takaharu TakeshitaAbstract:This paper presents the control of copper Loss Minimization for emulating engine torque by an interior permanent magnet synchronous motor (IPMSM). In the proposed method, considering the voltage which is generated by the changes of the torque reference, the current reference that makes maximum use of the inverter voltage is calculated. When the IPMSM is driven at high speed, maximum use of the inverter voltage minimizes copper Loss of the IPMSM. The effectiveness of this method is verified by the experiments.
-
All Nodes Voltage Regulation and Line Loss Minimization in Loop Distribution Systems Using UPFC
IEEE Transactions on Power Electronics, 2011Co-Authors: Mahmoud A. Sayed, Takaharu TakeshitaAbstract:Voltage regulation and line Loss Minimization in distribution networks are challenging problems, particularly when it is not economic to upgrade the entire feeder system. This paper presents a new method for achieving line Loss Minimization and all nodes voltage regulation in the loop distribution systems, simultaneously, by using unified power flow controller (UPFC), one of the most important FACTS devices. First, the line Loss minimum conditions in the loop system are presented. Then, load voltage regulation is applied under line Loss minimum conditions. Reference voltage of the controlled node is determined based on the assumption that this voltage can subsequently improve all node voltages to be within the permissible range. Also, the proposed control scheme of the UPFC series converter, to regulate all node voltages under line Loss Minimization, is presented. The effectiveness of the proposed control scheme has been experimentally verified.
-
All nodes voltage regulation and line Loss Minimization in loop distribution systems using UPFC
2009 IEEE Energy Conversion Congress and Exposition, 2009Co-Authors: Mahmoud A. Sayed, Takaharu TakeshitaAbstract:Voltage regulation and line Loss Minimization in distribution lines are challenging problems, particularly when it is not economic to upgrade the entire feeder system. This paper presents a new method for achieving line Loss Minimization and all nodes voltage regulation in the loop distribution systems, simultaneously. First, loop system line Loss minimum conditions are presented. Then, load voltage regulation is applied under line Loss minimum conditions. Reference voltage of the controlled node is determined based on the assumption that this voltage can subsequently improve all node voltages to be within permissible range. Reference angle of the controlled node voltage is the main factor that can be used to minimize total line Loss during load voltage control. In order to achieve these two objectives, simultaneously, the UPFC, a FACTS device, is used. Also, the proposed control scheme of the UPFC to regulate all node voltages under line Loss Minimization is presented. The effectiveness of the proposed control scheme has been verified experimentally.
-
Voltage Regulation and Line Loss Minimization of Loop Distribution Systems Using UPFC
IEEJ Transactions on Industry Applications, 2009Co-Authors: Mahmoud A. Sayed, Takaharu TakeshitaAbstract:This paper presents a new method for achieving line Loss Minimization and voltage regulation in the loop distribution systems, simultaneously. First, mathematical analysis of the line Loss minimum conditions in the loop distribution systems is presented. Then, load voltage regulation is applied in the loop distribution system under line Loss minimum condition. Reference angle of the desired load voltage is the main factor that can be used to minimize total line Loss during load voltage control. In order to achieve these two objectives simultaneously, the UPFC (unified power flow controller), a typical FACTS (flexible AC transmission systems) device, that is capable of instantaneous control of transmission and distribution power flow, is used. Also, the UPFC control scheme to regulate the load voltage under line Loss Minimization is presented. The effectiveness of the proposed control scheme has been verified experimentally using laboratory prototype in a 200V, 6kVA system.
Mahmoud A. Sayed - One of the best experts on this subject based on the ideXlab platform.
-
All Nodes Voltage Regulation and Line Loss Minimization in Loop Distribution Systems Using UPFC
IEEE Transactions on Power Electronics, 2011Co-Authors: Mahmoud A. Sayed, Takaharu TakeshitaAbstract:Voltage regulation and line Loss Minimization in distribution networks are challenging problems, particularly when it is not economic to upgrade the entire feeder system. This paper presents a new method for achieving line Loss Minimization and all nodes voltage regulation in the loop distribution systems, simultaneously, by using unified power flow controller (UPFC), one of the most important FACTS devices. First, the line Loss minimum conditions in the loop system are presented. Then, load voltage regulation is applied under line Loss minimum conditions. Reference voltage of the controlled node is determined based on the assumption that this voltage can subsequently improve all node voltages to be within the permissible range. Also, the proposed control scheme of the UPFC series converter, to regulate all node voltages under line Loss Minimization, is presented. The effectiveness of the proposed control scheme has been experimentally verified.
-
All nodes voltage regulation and line Loss Minimization in loop distribution systems using UPFC
2009 IEEE Energy Conversion Congress and Exposition, 2009Co-Authors: Mahmoud A. Sayed, Takaharu TakeshitaAbstract:Voltage regulation and line Loss Minimization in distribution lines are challenging problems, particularly when it is not economic to upgrade the entire feeder system. This paper presents a new method for achieving line Loss Minimization and all nodes voltage regulation in the loop distribution systems, simultaneously. First, loop system line Loss minimum conditions are presented. Then, load voltage regulation is applied under line Loss minimum conditions. Reference voltage of the controlled node is determined based on the assumption that this voltage can subsequently improve all node voltages to be within permissible range. Reference angle of the controlled node voltage is the main factor that can be used to minimize total line Loss during load voltage control. In order to achieve these two objectives, simultaneously, the UPFC, a FACTS device, is used. Also, the proposed control scheme of the UPFC to regulate all node voltages under line Loss Minimization is presented. The effectiveness of the proposed control scheme has been verified experimentally.
-
Voltage Regulation and Line Loss Minimization of Loop Distribution Systems Using UPFC
IEEJ Transactions on Industry Applications, 2009Co-Authors: Mahmoud A. Sayed, Takaharu TakeshitaAbstract:This paper presents a new method for achieving line Loss Minimization and voltage regulation in the loop distribution systems, simultaneously. First, mathematical analysis of the line Loss minimum conditions in the loop distribution systems is presented. Then, load voltage regulation is applied in the loop distribution system under line Loss minimum condition. Reference angle of the desired load voltage is the main factor that can be used to minimize total line Loss during load voltage control. In order to achieve these two objectives simultaneously, the UPFC (unified power flow controller), a typical FACTS (flexible AC transmission systems) device, that is capable of instantaneous control of transmission and distribution power flow, is used. Also, the UPFC control scheme to regulate the load voltage under line Loss Minimization is presented. The effectiveness of the proposed control scheme has been verified experimentally using laboratory prototype in a 200V, 6kVA system.
Christos Mademlis - One of the best experts on this subject based on the ideXlab platform.
-
Loss Minimization in vector controlled interior permanent magnet synchronous motor drives
IEEE Transactions on Industrial Electronics, 2002Co-Authors: Christos Mademlis, N. MargarisAbstract:An efficiency optimization method for vector-controlled interior permanent-magnet synchronous motor drives is presented. Based on theoretical analysis, a Loss Minimization condition that determines the optimal d-axis component of the armature current is derived. Selected experimental results are presented to validate the effectiveness of the proposed control method.
-
Loss Minimization in surface permanent-magnet synchronous motor drives
IEEE Transactions on Industrial Electronics, 2000Co-Authors: Christos Mademlis, J. Xypteras, N. MargarisAbstract:The Loss Minimization in surface permanent-magnet synchronous motor drives is investigated. Based on theoretical analysis, a Loss model controller is introduced to specify the optimal air-gap flux that minimizes Losses. Theoretical results are verified experimentally. The proposed Loss model controller is simple and does not adversely affect the cost and complexity of the drive. Implementation of the Loss model controller does not require knowledge of the Loss model. The suggested Loss Minimization method can be applied both in V/f- or current-controlled schemes.
-
Magnetic and thermal performance of a synchronous motor under Loss Minimization control
IEEE Transactions on Energy Conversion, 2000Co-Authors: Christos Mademlis, N. Margaris, J. XypterasAbstract:The steady state magnetic and thermal performance of a wound-field cylindrical rotor synchronous motor under Loss Minimization control is investigated. The calculated magnetic field waveforms are presented and it is shown that Loss Minimization control decreases the magnetic saturation. It is also proved that although the optimal stator current is increased, the temperature is decreased in all parts of the motor. Theoretical and experimental results are presented to verify the operational improvements.
I. Kioskeridis - One of the best experts on this subject based on the ideXlab platform.
-
Loss Minimization in scalar-controlled induction motor drives with search controllers
IEEE Transactions on Power Electronics, 1996Co-Authors: I. Kioskeridis, N. MargarisAbstract:Loss Minimization in scalar-controlled induction motor drives (IMD) with search controllers (SC) is investigated. The problems arising when the input power is used as the controlled variable are described. It is proved that better results are achieved if the stator current is used as the controlled variable.
