EPE Association: EPE-PEMC 2004 - Topic 05-4: A.C. and D.C. Machines and Drives

EPE-PEMC 2004 - Topic 05-4: A.C. and D.C. Machines and Drives
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 05: ELECTRICAL MACHINES AND ACTUATORS > EPE-PEMC 2004 - Topic 05-4: A.C. and D.C. Machines and Drives

   [return to parent folder]

   A 30-Krpm 1-Kw PM Motor For Hand-Tool Applications
By N. Bianchi, S. Bolognani [View]
[Download]

Abstract: This paper illustrates the design criteria of a 30-krpm 1-kW permanent-magnet (PM) motor, highlighting motor potentials and limits. The procedures for computing magnetic, electrical as well as mechanical quantities are presented, using both analytical and finite element approaches. The flux density in the magnetic circuit, the losses and PM-demagnitization limits are pointed out. Studies of the thermal behavior as well as of the mechanical limits are shown. Some different techniques to retain the PM are discussed. Preliminary test results on a motor prototype are also presented.

   A New Topology Supply For A Single-Phase Induction Motor - Dimmer Case Approach
By Almir L. Neri Jr., Ana C. C. Lyra, Yaro Burian Jr. [View]
[Download]

Abstract: The previous theoretical simulations on alternative topologies supply [1] for the single-phase induction motor guided the research to implementation tests, which would indicate practical choices to substitute the centrifugal switch. In this work a well-known power electronic circuit are tested to provide especial waves at the machine windings. Others considerations are made to reach the most simple system to start the single-phase motor without the mechanical switch.

   A Simulation Investigation Of The Influence Of Spatial Distribution Of Parameters In The Induction Motor Drive
By Stanislaw Potrawka, Romana Sikora-Iliew [View]
[Download]

Abstract: The paper presents results of simulation investigation carried out for the model of a drive consisting of the induction motor driven drum, loaded with a strip and the mass mo at its end. Two models were investigated concurrently: with lumped parameters (Tem ,U ) and with distributed parameters (Temd , U). The simulation results, which can be useful for control system designing, are given.

   Design Of A Super-High Speed Cryogenic Permanent Magnet Synchronous Motor
By Liping Zheng, Thomas X. Wu, Jay Vaidya, Dipjyoti Acharya, Krishna Murty, Limei Zhao, Chan H. Ham, Kalpathy B. Sundaram, Nagaraj Arakere, Jay Kapat And Louis Cho [View]
[Download]

Abstract: This paper gives the design and simulation of a permanent magnet synchronous motor (PMSM) for a super-high speed centrifugal compressor drive application. The PMSM will have an output power of 2000 W at 200,000 rpm with 28 V dc power supply. It is designed for operation at a cryogenic temperature of 77 K. The designed PMSM is a 2-pole, 3-phase slotless structure. The permanent magnet is centrally located inside the shaft. Multi-strand twisted Litz-wire is proposed to be used to reduce eddy current loss in the winding. The selection of materials for super-high speed and cryogenic application criteria is presented. The possible structures of rotor and stator are considered and simulated using 2-D finite element method (FEM). Mechanical stress simulation and rotordynamic issues are also considered. Projected total efficiency of the motor is over 90%.

   Development Of Bearingless Motors
By Tadashi Fukao, Akira Chiba, Osamu Ichikawa, Masahide Ooshima, Masatsugu Takemoto [View]
[Download]

Abstract: Recent research developments of bearingless drives are briefly summarized. Definitions and principles of bearingless motors and generators are described. Several typical configurations of bearingless drives are introduced. Control methods and characteristics of several types of bearingless motors are reviewed such as reluctance, homopolar, permanent magnet, induction and switched reluctance motors.

   Dynamics Behaviour Of Generator-Units During The Starting Of Induction Motors Drives
By Marija Mirosevic, Zlatko Maljkovic, Mateo Milkovic [View]
[Download]

Abstract: The paper analyses the dynamics of generatorunits during the starting of induction motor drives. A unique mathematical model of integral motor drives has been developed, consisting of: a diesel engine, a synchronous generator and two non-regulated motor drives fed directly from generator-unit terminals. The aim of this paper is to compare dynamics behaviors of the generatorunits during starting the second induction motor at the moment when the instantaneous terminal voltage of the synchronous generator reaches various instantaneous values.

   Genetic Algorithms In Control Of Electromechanical Plant Comprising Nonlinear Elements, With Several Criteria Of Quality
By Klempka Ryszard [View]
[Download]

Abstract: The paper presents application of Genetic Algorithms to a multicriterial optimisation of an electromechanical system with some nonlinear elements taken into consideration. The designed control has been tested using a separately excited dc motor with constant magnetic flux, converter, control system, AD/DA converters, etc. The control objective is to accomplish a given distance on a sub-optimal trajectory. Results of GA adaptation are simulations of a separately excited dc motor operation with the controller designed by GA, which minimises selected indices ( ƒ°e2, H ‡ and ( ƒ°e2 + H ‡)) as well as simulation of the system operation with controllers designed using classical methods (Kessler, H ‡) presented in this paper.

   High-Speed Drives With Permanent-Magnet Machines And Active Magnetic Bearings
By A. Binder, M. Klohr, T. Lu, W. Hackmann [View]
[Download]

Abstract: Permanent magnet technology allowed – together with advances in glass and carbon fiber shell development – design of high-speed drives with surface mounted magnets. Use of double-layer pitched winding, leading to flux distribution with small field harmonics, and low loss sheets result in low additional losses at high speed and sine wave supply. Inverter supply needs filtering to keep additional losses low. Stator water-jacket cooling contributes to compact motor design. Compared with high-speed copper cage induction motors the PM synchronous machines are superior in power density, lower losses and winding temperature. Measured results on 24000/min, 30 kW, induction and PM machines with grease lubricated spindle bearings are presented along with magnetically levitated 40000/min, 40 kW PM prototype machines. Magnetic bearings allow raising of speed and offer additional functionality such as active imbalance compensation.

   Magnetic Field Calculation In The Air Gap Of Electrical Machines
By L. Andriusiene, A. Degutis, A. Kairys, P. Kostrauskas [View]
[Download]

Abstract: The quasi-steady state of magnetic field in the air gap of electrical machine is determined by time phases’ coincidence of all spatial harmonics of magnetic induction’s distribution in the air gap. The condition of magnetic field’s quasi-steady state is satisfied only by symmetric electrical machine working at no-load, the magnetic losses of which are equal to zero. The wave differential equation received from Maxwell’s equations is used for the calculation of nonstationary magnetic fields in the air gap of electrical machines.

   Mathematical Models Of Converter Fed Induction Motors: Adequacy And Applicability Issues
By V. I. Chrisanov(ru), S. Yamamura(jp), R. Brzezinski(pl) [View]
[Download]

Abstract: In the paper the analysis of a few essential mathematical models is fulfilled in regard of their adequacy and applicability when the induction motor (IM) is fed with a converter. Suggested classification of conventional and new models is subdivided in two main groups depending on the matter of variable transformation. Analytic and computer verification is carried out to prove adequacy of models with the IM transient and steady states. The certain recommendations on the IM models applicability with different types of converters are given as well.

   MMF Of Six Phase Induction Motors For Rectangular Current Supply
By Jacek Grochowalski [View]
[Download]

Abstract: The problem of diminishing the pulsating torques in high power induction motor drives are investigated. This paper describes analysis and numerical results of MMF in three and six phase AC machines supplying by sinusoidal and nonsinusoidal currents. Analysis of six phase machines are for different angle between three phase stator windings and different time angles between currents in both three phase systems.

   Reducing Of Induction Motors Vibrations At Drives With Semiconductor Converters Designing
By M. Roytgarts, M. Pronin [View]
[Download]

Abstract: For reduction of induction motors vibrations in vari-able-frequency electric drives the combined designing of semi-conductor converters and asynchronous machines is carried out. There were developed models of an electrical systems num-ber that allow calculating harmonic composition of currents and voltages of electrical machines with the regard for peculiar-ity of semiconductor converters, control algorithm accurately enough. For evaluation of vibrations are used the equivalent circuits of motors with the regard for timing and spatial har-monic components. Combined examination of results of elec-tromechanical processes and vibrations allows adjusting induc-tion motors parameters, drives circuits, control algorithms.

   Soft Magnetic Composites For Ac Machines - A Fresh Perspective
By T. A. Lipo, S. M. Madani, R. White [View]
[Download]

Abstract: Soft magnetic composites (SMCs) have opened up new possibilities for the design of both DC and AC machines. Since SMCs are isotropic, machine topologies such as claw pole machines, transverse flux machines and the like, which have three dimensional flux density patterns have attracted the most attention. Very little effort has gone into improving the performance of conventional AC machines such as cylindrical rotor permanent magnet machines. This paper proposes new options for design of conventional machines which efficiently utilize the SMC material.

   Stand Alone Self-Excited Mixed Pole Generator
By Adel L. Mohamadein., Ragi A. R. Hamdy, Ayman. S. Abdel-Khalik [View]
[Download]

Abstract: This paper presents the assessment and simulation of stand-alone self excited mixed pole machine (MPM). The machine shows the ability to generate two voltages with two frequencies. The sum of the frequencies depends on the speed. A novel modeling technique is proposed to resemble the evaluation of rotor MMF and machine inductance.

   Static VAR Compensator-Based Terminal Voltage Control Of Three-Phase Induction Generator For Stand-Alone AC And DC Applications
By Tarek Ahmed, Mutsuo Nakaoka [View]
[Download]

Abstract: In this paper, a three-phase induction machine-based wind power generation scheme is proposed. This scheme uses a low-cost diode bridge rectifier connected to the induction machine to transfer dc power with DC voltage regulation. The excitation to the three-phase SEIG is supplied by the static VAR compensator (SVC) composed of the fixed excitation capacitor and the thyristor-controlled reactor. The SVC is used to regulate smoothly the DC load voltage of the diode bridge rectifier circuit connected to the three-phase self-excited induction generator (SEIG). This simple method for controlling the reactive power of the SVC is useful for wind turbines installed at high wind speed sites, which are remote, or have only weak electrical networks. The dynamic performance responses and the experimental results of a 5-kW 220-V three-phase SEIG directly connected to a diode bridge rectifier at various loads are presented. Moreover, The steadystate simulated and experimental results of the PI closed-loop feedback voltage regulation scheme-based the SVC prove the practical effectiveness of these simple method for a wind turbine system. This proposed system with simple control techniques, provide a cost-effective method of improving the power quality of wind farms.

   The Novel Approach Of Coupled Analysis For Small Size And Ultra-High Speed Motor
By Koichi Shigematsu, Jun Oyama, Tsuyoshi Higuchi, Takashi Abe, Yasuhiro Ueno [View]
[Download]

Abstract: Recent developments of power electronics technology, low-loss iron core materials and highly efficient permanent magnet, etc have made it possible to realize a small size, high or ultra-high speed, and high performance electrical drive system. We designed and built a trial ultrahigh speed drive system of 2 poles, 5kW, 240,000rpm and had described our prototype system and showed some experimental results in the previous paper. This kind of motor is supported to development of various technology, such as control technology including DSP, FPGA, etc., power conversion technology and design technology which includes a finite element method. The development as a comprehensive drive system is necessary. In this paper we describe the coupled analysis model which is represented for entire drive system. This model was used to evaluate the fundamental motor characteristics at the first of design stage. And the model also has been applied to total systematic approach to enhance the total drive system.

   Three-Phase Asynchronous Motor With Spiral Sheet Rotor Performance Improvement Of The Three-Phase Induction Motors
By Ramon Mujal-Rosas [View]
[Download]

Abstract: These instructions give you guidelines for preparing electronic versions of papers for the Conference Proceedings. You may use desktop publishing software with several type sizes

EPE-PEMC 2004 - Topic 05-4: A.C. and D.C. Machines and Drives
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2004 - Conference > EPE-PEMC 2004 - Topic 05: ELECTRICAL MACHINES AND ACTUATORS > EPE-PEMC 2004 - Topic 05-4: A.C. and D.C. Machines and Drives
	[return to parent folder]

	A 30-Krpm 1-Kw PM Motor For Hand-Tool Applications By N. Bianchi, S. Bolognani	[View] [Download]
Abstract: This paper illustrates the design criteria of a 30-krpm 1-kW permanent-magnet (PM) motor, highlighting motor potentials and limits. The procedures for computing magnetic, electrical as well as mechanical quantities are presented, using both analytical and finite element approaches. The flux density in the magnetic circuit, the losses and PM-demagnitization limits are pointed out. Studies of the thermal behavior as well as of the mechanical limits are shown. Some different techniques to retain the PM are discussed. Preliminary test results on a motor prototype are also presented.

	A New Topology Supply For A Single-Phase Induction Motor - Dimmer Case Approach By Almir L. Neri Jr., Ana C. C. Lyra, Yaro Burian Jr.	[View] [Download]
Abstract: The previous theoretical simulations on alternative topologies supply [1] for the single-phase induction motor guided the research to implementation tests, which would indicate practical choices to substitute the centrifugal switch. In this work a well-known power electronic circuit are tested to provide especial waves at the machine windings. Others considerations are made to reach the most simple system to start the single-phase motor without the mechanical switch.

	A Simulation Investigation Of The Influence Of Spatial Distribution Of Parameters In The Induction Motor Drive By Stanislaw Potrawka, Romana Sikora-Iliew	[View] [Download]
Abstract: The paper presents results of simulation investigation carried out for the model of a drive consisting of the induction motor driven drum, loaded with a strip and the mass mo at its end. Two models were investigated concurrently: with lumped parameters (Tem ,U ) and with distributed parameters (Temd , U). The simulation results, which can be useful for control system designing, are given.

	Design Of A Super-High Speed Cryogenic Permanent Magnet Synchronous Motor By Liping Zheng, Thomas X. Wu, Jay Vaidya, Dipjyoti Acharya, Krishna Murty, Limei Zhao, Chan H. Ham, Kalpathy B. Sundaram, Nagaraj Arakere, Jay Kapat And Louis Cho	[View] [Download]
Abstract: This paper gives the design and simulation of a permanent magnet synchronous motor (PMSM) for a super-high speed centrifugal compressor drive application. The PMSM will have an output power of 2000 W at 200,000 rpm with 28 V dc power supply. It is designed for operation at a cryogenic temperature of 77 K. The designed PMSM is a 2-pole, 3-phase slotless structure. The permanent magnet is centrally located inside the shaft. Multi-strand twisted Litz-wire is proposed to be used to reduce eddy current loss in the winding. The selection of materials for super-high speed and cryogenic application criteria is presented. The possible structures of rotor and stator are considered and simulated using 2-D finite element method (FEM). Mechanical stress simulation and rotordynamic issues are also considered. Projected total efficiency of the motor is over 90%.

	Development Of Bearingless Motors By Tadashi Fukao, Akira Chiba, Osamu Ichikawa, Masahide Ooshima, Masatsugu Takemoto	[View] [Download]
Abstract: Recent research developments of bearingless drives are briefly summarized. Definitions and principles of bearingless motors and generators are described. Several typical configurations of bearingless drives are introduced. Control methods and characteristics of several types of bearingless motors are reviewed such as reluctance, homopolar, permanent magnet, induction and switched reluctance motors.

	Dynamics Behaviour Of Generator-Units During The Starting Of Induction Motors Drives By Marija Mirosevic, Zlatko Maljkovic, Mateo Milkovic	[View] [Download]
Abstract: The paper analyses the dynamics of generatorunits during the starting of induction motor drives. A unique mathematical model of integral motor drives has been developed, consisting of: a diesel engine, a synchronous generator and two non-regulated motor drives fed directly from generator-unit terminals. The aim of this paper is to compare dynamics behaviors of the generatorunits during starting the second induction motor at the moment when the instantaneous terminal voltage of the synchronous generator reaches various instantaneous values.

	Genetic Algorithms In Control Of Electromechanical Plant Comprising Nonlinear Elements, With Several Criteria Of Quality By Klempka Ryszard	[View] [Download]
Abstract: The paper presents application of Genetic Algorithms to a multicriterial optimisation of an electromechanical system with some nonlinear elements taken into consideration. The designed control has been tested using a separately excited dc motor with constant magnetic flux, converter, control system, AD/DA converters, etc. The control objective is to accomplish a given distance on a sub-optimal trajectory. Results of GA adaptation are simulations of a separately excited dc motor operation with the controller designed by GA, which minimises selected indices ( ƒ°e2, H ‡ and ( ƒ°e2 + H ‡)) as well as simulation of the system operation with controllers designed using classical methods (Kessler, H ‡) presented in this paper.

	High-Speed Drives With Permanent-Magnet Machines And Active Magnetic Bearings By A. Binder, M. Klohr, T. Lu, W. Hackmann	[View] [Download]
Abstract: Permanent magnet technology allowed – together with advances in glass and carbon fiber shell development – design of high-speed drives with surface mounted magnets. Use of double-layer pitched winding, leading to flux distribution with small field harmonics, and low loss sheets result in low additional losses at high speed and sine wave supply. Inverter supply needs filtering to keep additional losses low. Stator water-jacket cooling contributes to compact motor design. Compared with high-speed copper cage induction motors the PM synchronous machines are superior in power density, lower losses and winding temperature. Measured results on 24000/min, 30 kW, induction and PM machines with grease lubricated spindle bearings are presented along with magnetically levitated 40000/min, 40 kW PM prototype machines. Magnetic bearings allow raising of speed and offer additional functionality such as active imbalance compensation.

	Magnetic Field Calculation In The Air Gap Of Electrical Machines By L. Andriusiene, A. Degutis, A. Kairys, P. Kostrauskas	[View] [Download]
Abstract: The quasi-steady state of magnetic field in the air gap of electrical machine is determined by time phases’ coincidence of all spatial harmonics of magnetic induction’s distribution in the air gap. The condition of magnetic field’s quasi-steady state is satisfied only by symmetric electrical machine working at no-load, the magnetic losses of which are equal to zero. The wave differential equation received from Maxwell’s equations is used for the calculation of nonstationary magnetic fields in the air gap of electrical machines.

	Mathematical Models Of Converter Fed Induction Motors: Adequacy And Applicability Issues By V. I. Chrisanov(ru), S. Yamamura(jp), R. Brzezinski(pl)	[View] [Download]
Abstract: In the paper the analysis of a few essential mathematical models is fulfilled in regard of their adequacy and applicability when the induction motor (IM) is fed with a converter. Suggested classification of conventional and new models is subdivided in two main groups depending on the matter of variable transformation. Analytic and computer verification is carried out to prove adequacy of models with the IM transient and steady states. The certain recommendations on the IM models applicability with different types of converters are given as well.

	MMF Of Six Phase Induction Motors For Rectangular Current Supply By Jacek Grochowalski	[View] [Download]
Abstract: The problem of diminishing the pulsating torques in high power induction motor drives are investigated. This paper describes analysis and numerical results of MMF in three and six phase AC machines supplying by sinusoidal and nonsinusoidal currents. Analysis of six phase machines are for different angle between three phase stator windings and different time angles between currents in both three phase systems.

	Reducing Of Induction Motors Vibrations At Drives With Semiconductor Converters Designing By M. Roytgarts, M. Pronin	[View] [Download]
Abstract: For reduction of induction motors vibrations in vari-able-frequency electric drives the combined designing of semi-conductor converters and asynchronous machines is carried out. There were developed models of an electrical systems num-ber that allow calculating harmonic composition of currents and voltages of electrical machines with the regard for peculiar-ity of semiconductor converters, control algorithm accurately enough. For evaluation of vibrations are used the equivalent circuits of motors with the regard for timing and spatial har-monic components. Combined examination of results of elec-tromechanical processes and vibrations allows adjusting induc-tion motors parameters, drives circuits, control algorithms.

	Soft Magnetic Composites For Ac Machines - A Fresh Perspective By T. A. Lipo, S. M. Madani, R. White	[View] [Download]
Abstract: Soft magnetic composites (SMCs) have opened up new possibilities for the design of both DC and AC machines. Since SMCs are isotropic, machine topologies such as claw pole machines, transverse flux machines and the like, which have three dimensional flux density patterns have attracted the most attention. Very little effort has gone into improving the performance of conventional AC machines such as cylindrical rotor permanent magnet machines. This paper proposes new options for design of conventional machines which efficiently utilize the SMC material.

	Stand Alone Self-Excited Mixed Pole Generator By Adel L. Mohamadein., Ragi A. R. Hamdy, Ayman. S. Abdel-Khalik	[View] [Download]
Abstract: This paper presents the assessment and simulation of stand-alone self excited mixed pole machine (MPM). The machine shows the ability to generate two voltages with two frequencies. The sum of the frequencies depends on the speed. A novel modeling technique is proposed to resemble the evaluation of rotor MMF and machine inductance.

	Static VAR Compensator-Based Terminal Voltage Control Of Three-Phase Induction Generator For Stand-Alone AC And DC Applications By Tarek Ahmed, Mutsuo Nakaoka	[View] [Download]
Abstract: In this paper, a three-phase induction machine-based wind power generation scheme is proposed. This scheme uses a low-cost diode bridge rectifier connected to the induction machine to transfer dc power with DC voltage regulation. The excitation to the three-phase SEIG is supplied by the static VAR compensator (SVC) composed of the fixed excitation capacitor and the thyristor-controlled reactor. The SVC is used to regulate smoothly the DC load voltage of the diode bridge rectifier circuit connected to the three-phase self-excited induction generator (SEIG). This simple method for controlling the reactive power of the SVC is useful for wind turbines installed at high wind speed sites, which are remote, or have only weak electrical networks. The dynamic performance responses and the experimental results of a 5-kW 220-V three-phase SEIG directly connected to a diode bridge rectifier at various loads are presented. Moreover, The steadystate simulated and experimental results of the PI closed-loop feedback voltage regulation scheme-based the SVC prove the practical effectiveness of these simple method for a wind turbine system. This proposed system with simple control techniques, provide a cost-effective method of improving the power quality of wind farms.

	The Novel Approach Of Coupled Analysis For Small Size And Ultra-High Speed Motor By Koichi Shigematsu, Jun Oyama, Tsuyoshi Higuchi, Takashi Abe, Yasuhiro Ueno	[View] [Download]
Abstract: Recent developments of power electronics technology, low-loss iron core materials and highly efficient permanent magnet, etc have made it possible to realize a small size, high or ultra-high speed, and high performance electrical drive system. We designed and built a trial ultrahigh speed drive system of 2 poles, 5kW, 240,000rpm and had described our prototype system and showed some experimental results in the previous paper. This kind of motor is supported to development of various technology, such as control technology including DSP, FPGA, etc., power conversion technology and design technology which includes a finite element method. The development as a comprehensive drive system is necessary. In this paper we describe the coupled analysis model which is represented for entire drive system. This model was used to evaluate the fundamental motor characteristics at the first of design stage. And the model also has been applied to total systematic approach to enhance the total drive system.

	Three-Phase Asynchronous Motor With Spiral Sheet Rotor Performance Improvement Of The Three-Phase Induction Motors By Ramon Mujal-Rosas	[View] [Download]
Abstract: These instructions give you guidelines for preparing electronic versions of papers for the Conference Proceedings. You may use desktop publishing software with several type sizes