The Experts below are selected from a list of 69 Experts worldwide ranked by ideXlab platform
Annette Muetze - One of the best experts on this subject based on the ideXlab platform.
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Rheometer-Based Cogging and Hysteresis Torque and Iron Loss Determination of Sub-Fractional Horsepower Motors
IEEE Transactions on Industry Applications, 2020Co-Authors: Stefan Leitner, Hannes Gruebler, Georg Krenn, Annette MuetzeAbstract:Accurately measuring the cogging torque, hysteresis torque, and iron losses of permanent magnet (PM) Motors is a challenging task. This is especially true for sub-Fractional Horsepower (SFHP) variants used, e.g., in auxiliary drives for automotive fan and pump applications. Their cogging torque and hysteresis torque peak values are often in the sub-milli-Newton meter range, causing conventional measuring methods and devices to fail as especially friction impedes the measurement significantly. Moreover, their iron losses are hard to determine and usually merely estimated in the literature. This article presents an unconventional rheometer-based method to determine both 1) the cogging torque and hysteresis torque of SFHP PM Motors and 2) their iron losses by evaluating the observed offset torque. Two SFHP outer-rotor PM motor topologies for fan applications are analyzed, i.e., a claw-pole motor and a salient-pole motor. The results show that, with the proposed setup, settings, and evaluation, a rheometer can successfully be used to determine the cogging torque and hysteresis torque waveforms in the sub-milli-Newton meter range and the iron losses of SFHP Motors, both with excellent accuracy.
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Space Mapping-Based Fractional Horsepower Permanent Magnet Motor Design
2019 IEEE International Electric Machines & Drives Conference (IEMDC), 2019Co-Authors: Hannes Gruebler, Felix Krall, Stefan Leitner, Annette MuetzeAbstract:As for highly integrated Fractional Horsepower Motors, designing the drives of interest requires the use of numerical tools, e.g., 3D finite element models which, however, entail undesirable lengthy design times. The well-known space mapping approach, which takes advantage of using both a coarse and a fine model for the optimization and design processes, is used to reduce the design time, while allowing for overall reasonable accuracy. Compared to a design approach solely with 3D finite element analysis (FEA), the space mapping technique is predicted to enable the possibility of a multi-physics optimization of a drive in a one day run. While established as a recognized technique, space mapping has not yet found its application in the design of Fractional Horsepower machines.
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Loss-Surface-Based Iron Loss Prediction for Fractional Horsepower Electric Motor Design
2018 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe), 2018Co-Authors: Hannes Gruebler, Felix Krall, Stefan Leitner, Annette MuetzeAbstract:A modified loss-surface approach for iron loss prediction in Fractional Horsepower Motors is proposed which is especially suitable when the flux density distribution contains a high number of harmonics, and/or when only insufficient datasheet values are available. The requirements on such loss-surface determination and specific aspects of its realization are investigated. The approach is validated experimentally by investigation of a toroidal iron stack of similar size as that of Fractional Horsepower machines which motivated this research. The predicted and the measured iron losses differ at a maximum of 4.6 %.
Aleksandr S. Nagorny - One of the best experts on this subject based on the ideXlab platform.
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An Overview of Efficiency and Loss Characterization of Fractional Horsepower Motors
IEEE Transactions on Industrial Electronics, 2013Co-Authors: Emmanuel B. Agamloh, Aleksandr S. NagornyAbstract:This paper presents techniques for testing Fractional Horsepower (FHP) induction and brushless dc Motors. The procedures for segregation of losses in these Motors are presented. The issues encountered in testing FHP Motors are discussed, and guidelines are provided to avert the issues. This paper also provides insights into understanding the test procedures outlined in the IEEE 114 Standard.
Hannes Gruebler - One of the best experts on this subject based on the ideXlab platform.
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Rheometer-Based Cogging and Hysteresis Torque and Iron Loss Determination of Sub-Fractional Horsepower Motors
IEEE Transactions on Industry Applications, 2020Co-Authors: Stefan Leitner, Hannes Gruebler, Georg Krenn, Annette MuetzeAbstract:Accurately measuring the cogging torque, hysteresis torque, and iron losses of permanent magnet (PM) Motors is a challenging task. This is especially true for sub-Fractional Horsepower (SFHP) variants used, e.g., in auxiliary drives for automotive fan and pump applications. Their cogging torque and hysteresis torque peak values are often in the sub-milli-Newton meter range, causing conventional measuring methods and devices to fail as especially friction impedes the measurement significantly. Moreover, their iron losses are hard to determine and usually merely estimated in the literature. This article presents an unconventional rheometer-based method to determine both 1) the cogging torque and hysteresis torque of SFHP PM Motors and 2) their iron losses by evaluating the observed offset torque. Two SFHP outer-rotor PM motor topologies for fan applications are analyzed, i.e., a claw-pole motor and a salient-pole motor. The results show that, with the proposed setup, settings, and evaluation, a rheometer can successfully be used to determine the cogging torque and hysteresis torque waveforms in the sub-milli-Newton meter range and the iron losses of SFHP Motors, both with excellent accuracy.
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Space Mapping-Based Fractional Horsepower Permanent Magnet Motor Design
2019 IEEE International Electric Machines & Drives Conference (IEMDC), 2019Co-Authors: Hannes Gruebler, Felix Krall, Stefan Leitner, Annette MuetzeAbstract:As for highly integrated Fractional Horsepower Motors, designing the drives of interest requires the use of numerical tools, e.g., 3D finite element models which, however, entail undesirable lengthy design times. The well-known space mapping approach, which takes advantage of using both a coarse and a fine model for the optimization and design processes, is used to reduce the design time, while allowing for overall reasonable accuracy. Compared to a design approach solely with 3D finite element analysis (FEA), the space mapping technique is predicted to enable the possibility of a multi-physics optimization of a drive in a one day run. While established as a recognized technique, space mapping has not yet found its application in the design of Fractional Horsepower machines.
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Loss-Surface-Based Iron Loss Prediction for Fractional Horsepower Electric Motor Design
2018 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe), 2018Co-Authors: Hannes Gruebler, Felix Krall, Stefan Leitner, Annette MuetzeAbstract:A modified loss-surface approach for iron loss prediction in Fractional Horsepower Motors is proposed which is especially suitable when the flux density distribution contains a high number of harmonics, and/or when only insufficient datasheet values are available. The requirements on such loss-surface determination and specific aspects of its realization are investigated. The approach is validated experimentally by investigation of a toroidal iron stack of similar size as that of Fractional Horsepower machines which motivated this research. The predicted and the measured iron losses differ at a maximum of 4.6 %.
Stefan Leitner - One of the best experts on this subject based on the ideXlab platform.
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Rheometer-Based Cogging and Hysteresis Torque and Iron Loss Determination of Sub-Fractional Horsepower Motors
IEEE Transactions on Industry Applications, 2020Co-Authors: Stefan Leitner, Hannes Gruebler, Georg Krenn, Annette MuetzeAbstract:Accurately measuring the cogging torque, hysteresis torque, and iron losses of permanent magnet (PM) Motors is a challenging task. This is especially true for sub-Fractional Horsepower (SFHP) variants used, e.g., in auxiliary drives for automotive fan and pump applications. Their cogging torque and hysteresis torque peak values are often in the sub-milli-Newton meter range, causing conventional measuring methods and devices to fail as especially friction impedes the measurement significantly. Moreover, their iron losses are hard to determine and usually merely estimated in the literature. This article presents an unconventional rheometer-based method to determine both 1) the cogging torque and hysteresis torque of SFHP PM Motors and 2) their iron losses by evaluating the observed offset torque. Two SFHP outer-rotor PM motor topologies for fan applications are analyzed, i.e., a claw-pole motor and a salient-pole motor. The results show that, with the proposed setup, settings, and evaluation, a rheometer can successfully be used to determine the cogging torque and hysteresis torque waveforms in the sub-milli-Newton meter range and the iron losses of SFHP Motors, both with excellent accuracy.
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Space Mapping-Based Fractional Horsepower Permanent Magnet Motor Design
2019 IEEE International Electric Machines & Drives Conference (IEMDC), 2019Co-Authors: Hannes Gruebler, Felix Krall, Stefan Leitner, Annette MuetzeAbstract:As for highly integrated Fractional Horsepower Motors, designing the drives of interest requires the use of numerical tools, e.g., 3D finite element models which, however, entail undesirable lengthy design times. The well-known space mapping approach, which takes advantage of using both a coarse and a fine model for the optimization and design processes, is used to reduce the design time, while allowing for overall reasonable accuracy. Compared to a design approach solely with 3D finite element analysis (FEA), the space mapping technique is predicted to enable the possibility of a multi-physics optimization of a drive in a one day run. While established as a recognized technique, space mapping has not yet found its application in the design of Fractional Horsepower machines.
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Loss-Surface-Based Iron Loss Prediction for Fractional Horsepower Electric Motor Design
2018 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe), 2018Co-Authors: Hannes Gruebler, Felix Krall, Stefan Leitner, Annette MuetzeAbstract:A modified loss-surface approach for iron loss prediction in Fractional Horsepower Motors is proposed which is especially suitable when the flux density distribution contains a high number of harmonics, and/or when only insufficient datasheet values are available. The requirements on such loss-surface determination and specific aspects of its realization are investigated. The approach is validated experimentally by investigation of a toroidal iron stack of similar size as that of Fractional Horsepower machines which motivated this research. The predicted and the measured iron losses differ at a maximum of 4.6 %.
Emmanuel B. Agamloh - One of the best experts on this subject based on the ideXlab platform.
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An Overview of Efficiency and Loss Characterization of Fractional Horsepower Motors
IEEE Transactions on Industrial Electronics, 2013Co-Authors: Emmanuel B. Agamloh, Aleksandr S. NagornyAbstract:This paper presents techniques for testing Fractional Horsepower (FHP) induction and brushless dc Motors. The procedures for segregation of losses in these Motors are presented. The issues encountered in testing FHP Motors are discussed, and guidelines are provided to avert the issues. This paper also provides insights into understanding the test procedures outlined in the IEEE 114 Standard.
