Pub Date : 2007-07-16DOI: 10.1109/IEMDC.2007.382785
E. Demirkutlu, S. Çetinkaya, A. Hava
A method for high performance output voltage control of a four-leg inverter (FLI) based three-phase UPS is proposed. Stationary frame resonant filter bank based output voltage control loop, which is complemented by capacitor current feedback based active damping loop, is employed. Utilizing the zero-state partitioning variable, a generalized form of scalar PWM for the FLI is developed and the minimum loss discontinuous PWM method is derived. The controller and modulator design and implementation details for the FLI-UPS are given. Linear and nonlinear loads for balanced and unbalanced load operating conditions are considered. The scalar control and PWM methods are proven by means of theory, simulations, and experiments.
{"title":"Output Voltage Control of A Four-Leg Inverter Based Three-Phase UPS by Means of Stationary Frame Resonant Filter Banks","authors":"E. Demirkutlu, S. Çetinkaya, A. Hava","doi":"10.1109/IEMDC.2007.382785","DOIUrl":"https://doi.org/10.1109/IEMDC.2007.382785","url":null,"abstract":"A method for high performance output voltage control of a four-leg inverter (FLI) based three-phase UPS is proposed. Stationary frame resonant filter bank based output voltage control loop, which is complemented by capacitor current feedback based active damping loop, is employed. Utilizing the zero-state partitioning variable, a generalized form of scalar PWM for the FLI is developed and the minimum loss discontinuous PWM method is derived. The controller and modulator design and implementation details for the FLI-UPS are given. Linear and nonlinear loads for balanced and unbalanced load operating conditions are considered. The scalar control and PWM methods are proven by means of theory, simulations, and experiments.","PeriodicalId":446844,"journal":{"name":"2007 IEEE International Electric Machines & Drives Conference","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131128777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-03DOI: 10.1109/IEMDC.2007.383647
M. van der Giet, K. Hameyer
For induction drives that are operated at two speeds the approved Dahlander technology with pole changeable coils in the stator of the motor can be applied. Being operated at constant supply frequency the motor with Dahlander coils can be driven at a speed ratio of 2:1 without using a frequency converter. The advantages are the simplicity and the robustness of the machine as well as the saving of weight and installation space due to the omitted power electronic circuits, although the motor and its pole changeable coils have to be designed with particular care. While the Dahlander winding for single frequency operation has often been made subject of discussion, this paper presents the approach of an induction machine with pole-changing coils operating on mains supply with variable frequency for aircraft application. Measurements on a prototype of the machine show that the required performance for the use as a pump drive is achieved properly.
{"title":"Induction motor with pole-changing winding for variable supply frequency","authors":"M. van der Giet, K. Hameyer","doi":"10.1109/IEMDC.2007.383647","DOIUrl":"https://doi.org/10.1109/IEMDC.2007.383647","url":null,"abstract":"For induction drives that are operated at two speeds the approved Dahlander technology with pole changeable coils in the stator of the motor can be applied. Being operated at constant supply frequency the motor with Dahlander coils can be driven at a speed ratio of 2:1 without using a frequency converter. The advantages are the simplicity and the robustness of the machine as well as the saving of weight and installation space due to the omitted power electronic circuits, although the motor and its pole changeable coils have to be designed with particular care. While the Dahlander winding for single frequency operation has often been made subject of discussion, this paper presents the approach of an induction machine with pole-changing coils operating on mains supply with variable frequency for aircraft application. Measurements on a prototype of the machine show that the required performance for the use as a pump drive is achieved properly.","PeriodicalId":446844,"journal":{"name":"2007 IEEE International Electric Machines & Drives Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115383532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-03DOI: 10.1109/IEMDC.2007.382679
B. Sung, Eun–woong Lee, Jae-Gyu Lee
The development method of solenoid actuators which are used as core components in automobile and aircraft industry is described. For optimal design of solenoid actuator general electromagnetic theory and empirical knowledge are simultaneously needed. First of all, the designer must perform the out-line design for the given item within a range of frame work by use of physical law and governing equations, and they carry out the optimal design through more detailed design process based on the empirical knowledge. In this paper, we present the optimal design method of low consumption type dc solenoid actuator using the simplified governing equations, electromagnetic theories, empirical design coefficients, and constrained optimization technique for solenoid actuator, and also show the design results and optimized design parameters for the dc 12 V, 0.5 W solenoid actuator.
{"title":"A design method of solenoid actuator using empirical design coefficients and optimization technique","authors":"B. Sung, Eun–woong Lee, Jae-Gyu Lee","doi":"10.1109/IEMDC.2007.382679","DOIUrl":"https://doi.org/10.1109/IEMDC.2007.382679","url":null,"abstract":"The development method of solenoid actuators which are used as core components in automobile and aircraft industry is described. For optimal design of solenoid actuator general electromagnetic theory and empirical knowledge are simultaneously needed. First of all, the designer must perform the out-line design for the given item within a range of frame work by use of physical law and governing equations, and they carry out the optimal design through more detailed design process based on the empirical knowledge. In this paper, we present the optimal design method of low consumption type dc solenoid actuator using the simplified governing equations, electromagnetic theories, empirical design coefficients, and constrained optimization technique for solenoid actuator, and also show the design results and optimized design parameters for the dc 12 V, 0.5 W solenoid actuator.","PeriodicalId":446844,"journal":{"name":"2007 IEEE International Electric Machines & Drives Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114669201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-03DOI: 10.1109/IEMDC.2007.383602
M. Durán, F. Barrero, S. Toral, E. Levi
A space vector PWM (SVPWM) technique for multiphase voltage source inverters (VSI), based on a multidimensional space approach, is considered in this paper. The additional degrees of freedom, which appear as the number of phases increases, make the SVPWM more complex because VSI space vectors are not in a single two-dimensional space any more. Existing approaches are predominantly based on n- dimensional space decomposition into (n-l)/2 two-dimensional sub-spaces and this is adequate when the output is required to be sinusoidal or sinusoidal with higher harmonic injection. However, in the case considered here (five-phase series- connected two-motor drive) there are two independent reference voltage vectors in the two sub-spaces and the problem of active voltage vector selection arises. The methodology outlined here is capable of overcoming this problem, since the voltage space vectors are selected on the basis of criteria that are formulated for the multi-dimensional space, so that all the two-dimensional sub-spaces are simultaneously considered. The paper at first summarises the mathematical analysis that establishes the necessary conditions for appropriate selection of the voltage space vectors in the multi-dimensional case. Different criteria for the general n-phase case are presented for the selection of the VSI space vectors and the validity of the SVPWM scheme is verified by simulation of a five-phase VSI supplying two series-connected five-phase motors.
{"title":"Multi-Dimensional Space Vector Pulse Width Modulation Scheme for Five-Phase Series-Connected Two-Motor Drives","authors":"M. Durán, F. Barrero, S. Toral, E. Levi","doi":"10.1109/IEMDC.2007.383602","DOIUrl":"https://doi.org/10.1109/IEMDC.2007.383602","url":null,"abstract":"A space vector PWM (SVPWM) technique for multiphase voltage source inverters (VSI), based on a multidimensional space approach, is considered in this paper. The additional degrees of freedom, which appear as the number of phases increases, make the SVPWM more complex because VSI space vectors are not in a single two-dimensional space any more. Existing approaches are predominantly based on n- dimensional space decomposition into (n-l)/2 two-dimensional sub-spaces and this is adequate when the output is required to be sinusoidal or sinusoidal with higher harmonic injection. However, in the case considered here (five-phase series- connected two-motor drive) there are two independent reference voltage vectors in the two sub-spaces and the problem of active voltage vector selection arises. The methodology outlined here is capable of overcoming this problem, since the voltage space vectors are selected on the basis of criteria that are formulated for the multi-dimensional space, so that all the two-dimensional sub-spaces are simultaneously considered. The paper at first summarises the mathematical analysis that establishes the necessary conditions for appropriate selection of the voltage space vectors in the multi-dimensional case. Different criteria for the general n-phase case are presented for the selection of the VSI space vectors and the validity of the SVPWM scheme is verified by simulation of a five-phase VSI supplying two series-connected five-phase motors.","PeriodicalId":446844,"journal":{"name":"2007 IEEE International Electric Machines & Drives Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117180616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-03DOI: 10.1109/IEMDC.2007.383628
Tae-Yeong Kim, Byoung-Kuk Lee, C. Won
In this paper, a functional simulation model for the seven-phase BLDC motor drive is studied and the actual implementation of the model is proposed with the help of Matlab Simulink. A new electrical equation to incorporate mutual inductance and switching function conception is derived to express phase currents. This model is used to examine the performance of speed control when fed by hysteresis current controllers. The dynamic characteristics of speed and torque as well as voltages and currents of PWM inverter components can be effectively monitored and developed.
{"title":"Modeling and Simulation of Multiphase BLDC Motor Drive Systems for Autonomous Underwater Vehicles","authors":"Tae-Yeong Kim, Byoung-Kuk Lee, C. Won","doi":"10.1109/IEMDC.2007.383628","DOIUrl":"https://doi.org/10.1109/IEMDC.2007.383628","url":null,"abstract":"In this paper, a functional simulation model for the seven-phase BLDC motor drive is studied and the actual implementation of the model is proposed with the help of Matlab Simulink. A new electrical equation to incorporate mutual inductance and switching function conception is derived to express phase currents. This model is used to examine the performance of speed control when fed by hysteresis current controllers. The dynamic characteristics of speed and torque as well as voltages and currents of PWM inverter components can be effectively monitored and developed.","PeriodicalId":446844,"journal":{"name":"2007 IEEE International Electric Machines & Drives Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117349478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-03DOI: 10.1109/IEMDC.2007.382739
A. Zakeri, K. Kanz, M. Bina
The theory of the instantaneous three-phase powers have been developing in different ways. The zero sequence components of the load affect the source during the process of instantaneous inactive or reactive power compensation. Different approaches have been used to overcome this issue, such as Clark transformation to separate zero sequence components from the phase quantities. This paper introduces a new approach to a previously proposed theory of the instantaneous reactive power compensation, minimization method. The proposed method is applicable to all balanced three-phase systems as well as unbalanced system without zero sequence components. A separate paper discusses a new way of overcoming the effects of the zero sequence components on the source currents, extending the new approach to all unbalanced systems.
{"title":"A New Approach to Compensation of Instantaneous Inactive Power","authors":"A. Zakeri, K. Kanz, M. Bina","doi":"10.1109/IEMDC.2007.382739","DOIUrl":"https://doi.org/10.1109/IEMDC.2007.382739","url":null,"abstract":"The theory of the instantaneous three-phase powers have been developing in different ways. The zero sequence components of the load affect the source during the process of instantaneous inactive or reactive power compensation. Different approaches have been used to overcome this issue, such as Clark transformation to separate zero sequence components from the phase quantities. This paper introduces a new approach to a previously proposed theory of the instantaneous reactive power compensation, minimization method. The proposed method is applicable to all balanced three-phase systems as well as unbalanced system without zero sequence components. A separate paper discusses a new way of overcoming the effects of the zero sequence components on the source currents, extending the new approach to all unbalanced systems.","PeriodicalId":446844,"journal":{"name":"2007 IEEE International Electric Machines & Drives Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124956556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-03DOI: 10.1109/IEMDC.2007.383565
Yuchen Lu, H. Hess, D. Edwards
An Ultracapacitor-based Energy Storage System (UESS) as an alternative to batteries is becoming attractive for Hybrid Electric Vehicles. This energy storage concept requires innovative control methods. In this paper, an UESS composed of two ultracapacitor banks and a boost converter is studied. The control objective is to regulate the output voltage subject to unpredictable incoming and outgoing energy flows. A hybrid control strategy, namely Gain Scheduling with Fuzzy Logic Control, is proposed. It consists of an Linear Quadratic Regulator (LQR) and a Fuzzy Logic Controller (FLC). At each system operating point, properly-designed LQR can achieve fast damping for short-term or small disturbances on input and load currents. When system operating point changes, FLC can trace the changes and adaptively adjust the parameters for the LQR controller. The proposed control method is simulated for validity.
{"title":"Adaptive Control of an Ultracapacitor Energy Storage System for Hybrid Electric Vehicles","authors":"Yuchen Lu, H. Hess, D. Edwards","doi":"10.1109/IEMDC.2007.383565","DOIUrl":"https://doi.org/10.1109/IEMDC.2007.383565","url":null,"abstract":"An Ultracapacitor-based Energy Storage System (UESS) as an alternative to batteries is becoming attractive for Hybrid Electric Vehicles. This energy storage concept requires innovative control methods. In this paper, an UESS composed of two ultracapacitor banks and a boost converter is studied. The control objective is to regulate the output voltage subject to unpredictable incoming and outgoing energy flows. A hybrid control strategy, namely Gain Scheduling with Fuzzy Logic Control, is proposed. It consists of an Linear Quadratic Regulator (LQR) and a Fuzzy Logic Controller (FLC). At each system operating point, properly-designed LQR can achieve fast damping for short-term or small disturbances on input and load currents. When system operating point changes, FLC can trace the changes and adaptively adjust the parameters for the LQR controller. The proposed control method is simulated for validity.","PeriodicalId":446844,"journal":{"name":"2007 IEEE International Electric Machines & Drives Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125849249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-03DOI: 10.1109/IEMDC.2007.382745
D. Saban, T. Lipo
This paper presents a novel method for calculating rotor eddy-current losses of PM machines using an analytically derived current sheet (2D) in combination with commercially available FE software (3D). First, an equation-based approach is used to determine the total magnetic field at the stator inner diameter. A 2D current sheet is formulated from the total field in the rotor reference frame. Next, the 2D current sheet is extended axially and used in a 3D FE analysis of the machines un-magnetized rotor. Using this procedure, rotor loss caused by armature current time harmonics, slot permeance variation and winding MMF harmonics has been calculated that properly considers axial variation with limited computing resources.
{"title":"Hybrid Approach for Determining Eddy-Current Losses in High-Speed PM Rotors","authors":"D. Saban, T. Lipo","doi":"10.1109/IEMDC.2007.382745","DOIUrl":"https://doi.org/10.1109/IEMDC.2007.382745","url":null,"abstract":"This paper presents a novel method for calculating rotor eddy-current losses of PM machines using an analytically derived current sheet (2D) in combination with commercially available FE software (3D). First, an equation-based approach is used to determine the total magnetic field at the stator inner diameter. A 2D current sheet is formulated from the total field in the rotor reference frame. Next, the 2D current sheet is extended axially and used in a 3D FE analysis of the machines un-magnetized rotor. Using this procedure, rotor loss caused by armature current time harmonics, slot permeance variation and winding MMF harmonics has been calculated that properly considers axial variation with limited computing resources.","PeriodicalId":446844,"journal":{"name":"2007 IEEE International Electric Machines & Drives Conference","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126925601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-03DOI: 10.1109/IEMDC.2007.382674
C. Attaianese, A. Barbaro, V. Nardi, G. Tomasso
A novel predictive control for PWM rectifier is proposed in this paper. The algorithm is based on a step-by-step prediction of the converter variables, on the basis of the actual power request and operating conditions. In particular, the control algorithm carries out the converter modulation pattern, in order to achieve a unity power factor at the mains, and the required load power. Experiment results confirm the proposed control performances.
{"title":"A Novel Predictive Control For PWM Rectifier","authors":"C. Attaianese, A. Barbaro, V. Nardi, G. Tomasso","doi":"10.1109/IEMDC.2007.382674","DOIUrl":"https://doi.org/10.1109/IEMDC.2007.382674","url":null,"abstract":"A novel predictive control for PWM rectifier is proposed in this paper. The algorithm is based on a step-by-step prediction of the converter variables, on the basis of the actual power request and operating conditions. In particular, the control algorithm carries out the converter modulation pattern, in order to achieve a unity power factor at the mains, and the required load power. Experiment results confirm the proposed control performances.","PeriodicalId":446844,"journal":{"name":"2007 IEEE International Electric Machines & Drives Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114953798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2007-05-03DOI: 10.1109/IEMDC.2007.382798
L. Del Ferraro, R. Terrigi, F. G. Capponi
Coreless permanent magnet (PM) machines can be a viable solution for applications where light-weight and high- efficiency are requested, as the absence of an iron core in the stator reduces machine weight and losses at high-frequency losses. Due to the large airgap, main flux is not driven by a magnetic path into the stator, hence a 3D field analysis is necessary. In this paper, an AFPM ironless machine has been optimized in terms of maximum torque produced per joule losses. Several topologies of coils and magnets have been proposed and investigated with 3D FEA.
{"title":"Coil and Magnet Shape Optimization of an Ironless AFPM Machine by Means of 3D FEA","authors":"L. Del Ferraro, R. Terrigi, F. G. Capponi","doi":"10.1109/IEMDC.2007.382798","DOIUrl":"https://doi.org/10.1109/IEMDC.2007.382798","url":null,"abstract":"Coreless permanent magnet (PM) machines can be a viable solution for applications where light-weight and high- efficiency are requested, as the absence of an iron core in the stator reduces machine weight and losses at high-frequency losses. Due to the large airgap, main flux is not driven by a magnetic path into the stator, hence a 3D field analysis is necessary. In this paper, an AFPM ironless machine has been optimized in terms of maximum torque produced per joule losses. Several topologies of coils and magnets have been proposed and investigated with 3D FEA.","PeriodicalId":446844,"journal":{"name":"2007 IEEE International Electric Machines & Drives Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122610916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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