The Experts below are selected from a list of 19140 Experts worldwide ranked by ideXlab platform
Antonios G. Kladas - One of the best experts on this subject based on the ideXlab platform.
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Comparison of Permanent Magnet Motor Configurations for Electric Vehicle Applications
2018 XIII International Conference on Electrical Machines (ICEM), 2018Co-Authors: I. D. Kakoudakis, E. K. Karamanis, I. I. Kikidis, Antonios G. KladasAbstract:High efficiency is a key advantage of Permanent Magnet Motors that is why they are favored in electric vehicle applications involving usually energy supply by important cost on board battery systems. According to the configuration of Permanent Magnets in the rotor they present different characteristics with respect to other criteria such as flux weakening capability, overloading withstand, fault tolerance and inverter requirements. This paper compares three major Permanent Magnet Motor topologies, namely the Surface External Permanent Magnet Motor, the Internal Permanent Magnet Motor and the Surface Buried Permanent Magnet Motor. In all cases a Fractional Slot Concentrated Winding configuration has been used enabling reduction of end zone conductor parts through non overlapping coils. Following a detailed design procedure three optimized prototypes have been constructed and the respective advantages and drawbacks of each configuration have been compared and discussed.
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internal Permanent Magnet Motor design for electric vehicle drive
IEEE Transactions on Industrial Electronics, 2010Co-Authors: K I Laskaris, Antonios G. KladasAbstract:Power compaction and high efficiency are two key advantages of Permanent Magnet Motors. This paper proposes an enhanced internal Permanent Magnet Motor that delivers high torque, power compaction, and exceptionally high efficiency in the same operation area. The advantage of the proposed scheme is the Magnetic flux accumulation in the air gap, which allows much higher values of Magnetic flux density, compared to a surface Permanent Magnet Motor of the same size. The original contribution of this paper resides on the adopted Motor configuration, enabling to efficiently utilize the energy stored in the Permanent Magnet and to provide total loss minimization at the most frequently used speed range.
Roberto Santarossa - One of the best experts on this subject based on the ideXlab platform.
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asynchronous performance analysis of a single phase capacitor start capacitor run Permanent Magnet Motor
IEEE Transactions on Energy Conversion, 2005Co-Authors: Mircea Popescu, Giovanni Strappazzon, Nicolla Trivillin, M. Mcgilp, T.j.e. Miller, Roberto SantarossaAbstract:This work presents a detailed analysis of the asynchronous torque components (average cage, Magnet braking torque and pulsating) for a single-phase capacitor-start, capacitor-run Permanent Magnet Motor. The computed envelope of pulsating torque superimposed over the average electroMagnetic torque leads to an accurate prediction of starting torque. The developed approach is realized by means of a combination of symmetrical components and d-q axes theory and it can be extended for any m-phase AC Motor - induction, synchronous reluctance or synchronous Permanent Magnet. The resultant average electroMagnetic torque is determined by superimposing the asynchronous torques and Magnet braking torque effects.
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line start Permanent Magnet Motor single phase steady state performance analysis
IEEE Industry Applications Society Annual Meeting, 2003Co-Authors: T.j.e. Miller, Giovanni Strappazzon, Nicolla Trivillin, Mircea Popescu, M. Mcgilp, C Cossar, Roberto SantarossaAbstract:This paper describes an efficient calculating procedure for the steady-state operation of a single-phase line-start capacitor-run Permanent-Magnet Motor. This class of Motor is beginning to be applied in hermetic refrigerator compressors as a high-efficiency alternative to either a plain induction Motor or a full inverter-fed drive. The calculation relies on a combination of reference-frame transformations including symmetrical components to cope with imbalance, and dq axes to cope with saliency. Computed results are compared with test data. The agreement is generally good, especially in describing the general properties of the Motor. However, it is shown that certain important effects are beyond the limit of simple circuit analysis and require a more complex numerical analysis method.
Zhengyu Lin - One of the best experts on this subject based on the ideXlab platform.
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Design optimization of short-stroke single-phase tubular Permanent-Magnet Motor for refrigeration applications
IEEE Transactions on Industrial Electronics, 2010Co-Authors: Jiabin Wang, David Howe, Zhengyu LinAbstract:This paper describes a design methodology to achieve optimal performance for a short-stroke single-phase tubular Permanent-Magnet Motor which drives a reciprocating vapor compressor. The steady-state characteristic of the direct-drive linear-Motor compressor system is analyzed, an analytical formula for predicting iron loss is presented, and a Motor-design procedure which takes into account the effect of compressor loads under nominal operating condition is formulated. It is shown that the Motor efficiency can be optimized with respect to two leading dimensional ratios. Experimental results validate the proposed design methodology.
Leila Parsa - One of the best experts on this subject based on the ideXlab platform.
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Five-phase interior Permanent Magnet Motor for hybrid electric vehicle application
2005 IEEE Vehicle Power and Propulsion Conference, 2005Co-Authors: Leila Parsa, A. Goodarzi, Hamid A. ToliyatAbstract:Five-phase interior Permanent Magnet Motors are very good candidates for hybrid electric vehicle applications. High torque pulsation is the major disadvantage of most IPM Motor configurations. Choosing proper number of stator slots as well as winding distribution and increasing number of phases are among the possible solutions for reducing torque pulsation. In this paper, five-phase interior Permanent Magnet Motor with fractional-slot stator is studied. It is shown that despite other IPM Motors; the proposed five-phase IPM Motor with fractional slot has a very low torque pulsation. The mathematical model of five phase interior Permanent Magnet Motor is given. Also it is shown that the MMF of the five-phase Motor can remain unchanged by applying proper control algorithm in case of loss of up to two phases. A prototype four pole, IPM Motor with 15 stator slots has been built and is used for experimental verification.
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five phase Permanent Magnet Motor drives for ship propulsion applications
Electric Ship Technologies Symposium, 2005Co-Authors: Leila Parsa, H A ToliyatAbstract:Multi-phase machines are very good candidates for ship propulsion application. In this paper, first a literature survey on the work accomplished in the area of multi-phase, split-phase and dual stator machines are presented. In the rest of the paper, additional degrees of freedom in multi-phase Permanent Magnet machines are employed to improve the overall performance of the system. Among all, the paper suggests and focuses on four significant features of multi-phase machines. First, the ability of injecting harmonic of currents in the Motor and improving the torque production capability is discussed. Second, better torque and flux adjustment in DTC controlled multi phase Motor is presented. Third, fault resilient current control of multi phase drive under loss of phases is examined. Finally the possibility of controlling multi Motors through a single inverter is pointed out. The five phase Permanent Magnet Motor is considered in this paper as an example. However the concept can be extended to higher number of phases.
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sensorless direct torque control of five phase interior Permanent Magnet Motor drives
IAS annual meeting, 2004Co-Authors: Leila Parsa, H A ToliyatAbstract:This paper presents the sensorless direct torque control (DTC) technique for five-phase interior Permanent Magnet (IPM) Motors. By using the introduced technique fast torque response with low ripple in the stator flux and torque of the five-phase interior Permanent Magnet Motor can be achieved. Having thirty-two space voltage vectors provides great flexibility in selecting the inverter switching states. Therefore, the stator flux and torque can be more precisely adjusted. Position information and speed are being estimated based on the position of the stator flux linkages. The mathematical model of the five-phase interior Permanent Magnet Motor is first derived. Later, the speed sensorless direct torque control method of the five-phase IPM is introduced. A five phase interior Permanent Magnet Motor and five leg IGBT based inverter were designed and fabricated in the laboratory. The control method is implemented on a TMS320C32 digital signal processor board.
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multi phase Permanent Magnet Motor drives
IEEE Industry Applications Society Annual Meeting, 2003Co-Authors: Leila Parsa, H A ToliyatAbstract:In this paper, a new five-phase brushless Permanent Magnet Motor is proposed. The proposed Motor has concentrated windings so the produced back-EMF is almost trapezoidal. The Motor is supplied with the combined sinusoidal plus third harmonic of currents. For presenting the superior performance of the proposed five-phase Motor, its three and five-phase counterparts are also analyzed. By changing the number of turns and slot width, the amount of copper and iron are kept constant in all Motors so that the copper and core losses are almost the same. Finite element method is used for studying the flux density and calculating the developed static torque. Also, the developed torque is obtained using the mathematical model in d-q frame. The average torque and the torque ripple of all cases are presented and compared.
H A Toliyat - One of the best experts on this subject based on the ideXlab platform.
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five phase Permanent Magnet Motor drives for ship propulsion applications
Electric Ship Technologies Symposium, 2005Co-Authors: Leila Parsa, H A ToliyatAbstract:Multi-phase machines are very good candidates for ship propulsion application. In this paper, first a literature survey on the work accomplished in the area of multi-phase, split-phase and dual stator machines are presented. In the rest of the paper, additional degrees of freedom in multi-phase Permanent Magnet machines are employed to improve the overall performance of the system. Among all, the paper suggests and focuses on four significant features of multi-phase machines. First, the ability of injecting harmonic of currents in the Motor and improving the torque production capability is discussed. Second, better torque and flux adjustment in DTC controlled multi phase Motor is presented. Third, fault resilient current control of multi phase drive under loss of phases is examined. Finally the possibility of controlling multi Motors through a single inverter is pointed out. The five phase Permanent Magnet Motor is considered in this paper as an example. However the concept can be extended to higher number of phases.
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sensorless direct torque control of five phase interior Permanent Magnet Motor drives
IAS annual meeting, 2004Co-Authors: Leila Parsa, H A ToliyatAbstract:This paper presents the sensorless direct torque control (DTC) technique for five-phase interior Permanent Magnet (IPM) Motors. By using the introduced technique fast torque response with low ripple in the stator flux and torque of the five-phase interior Permanent Magnet Motor can be achieved. Having thirty-two space voltage vectors provides great flexibility in selecting the inverter switching states. Therefore, the stator flux and torque can be more precisely adjusted. Position information and speed are being estimated based on the position of the stator flux linkages. The mathematical model of the five-phase interior Permanent Magnet Motor is first derived. Later, the speed sensorless direct torque control method of the five-phase IPM is introduced. A five phase interior Permanent Magnet Motor and five leg IGBT based inverter were designed and fabricated in the laboratory. The control method is implemented on a TMS320C32 digital signal processor board.
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multi phase Permanent Magnet Motor drives
IEEE Industry Applications Society Annual Meeting, 2003Co-Authors: Leila Parsa, H A ToliyatAbstract:In this paper, a new five-phase brushless Permanent Magnet Motor is proposed. The proposed Motor has concentrated windings so the produced back-EMF is almost trapezoidal. The Motor is supplied with the combined sinusoidal plus third harmonic of currents. For presenting the superior performance of the proposed five-phase Motor, its three and five-phase counterparts are also analyzed. By changing the number of turns and slot width, the amount of copper and iron are kept constant in all Motors so that the copper and core losses are almost the same. Finite element method is used for studying the flux density and calculating the developed static torque. Also, the developed torque is obtained using the mathematical model in d-q frame. The average torque and the torque ripple of all cases are presented and compared.
