EPE Association: EPE 2022 - DS1h: Electrical Machines and Actuators

EPE 2022 - DS1h: Electrical Machines and Actuators
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2022 ECCE Europe - Conference > EPE 2022 - Topic 05: Renewable Energy Power Systems > EPE 2022 - DS1h: Electrical Machines and Actuators

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   Combining Schwarz-Christoffel Mappings and Biot-Savart Law to Calculate the High Frequency Current Distribution Inside a Single Slot
By Torben FRICKE [View]
[Download]

Abstract: A novel calculation approach for the current and field distribution inside conductors in a slot at high frequencies based on a combination of a Schwarz-Christoffel Mapping and Biot-Savart Law is presented. The stator and rotor laminations are modeled using a surface impedance boundary condition and the results are validated against 2D FEA. The proposed method is overall less capable and mature than widely available 2D FEA software but has some appeal in niche applications, where licensing issues with FEA software are of concern or a high degree of integration into a broader tool chain is desirable.

   In-slot Cooling of Electrical Machines Using Traditional Techniques and Additive Manufacturing
By Ahmed HEMBEL [View]
[Download]

Abstract: This paper covers in-slot cooling methods used for the effective cooling of electric machines. Both traditional and additively manufactured cooling solutions are discussed throughout the paper. A new additively manufactured heat exchanger is also presented in the paper. It is shown that the proposed solution can boost current density to 83 Arms/mm2 using PCB as stator winding.

   Influence of an Electrical Machine on the Dimension and Packaging of Multi-Machine Systems
By Thomas STÖCKL [View]
[Download]

Abstract: The design of multi-machine systems requires the estimated installation space of the e-machines. Developed models calculate the space for different speeds and power concepts. Hereby, the advantages of combining several drives is shown. The paper illustrates the importance of machine parameters and number of units for a multi-machine system. The outlook gives an impression on how the efficiency of the e-machine can be improved by the operation management.

   Integrated motor drive: A multidisciplinary approach
By Betty LEMAIRE-SEMAIL [View]
[Download]

Abstract: Integrated drives are becoming a target for manufacturers aiming at addressing the increasing market of electrical embedded systems, such as e-transportation systems. Anyway, the integration of the power converter inside the electrical machine induces challenges if compactness is required. Additionally to the research of the best choices for the power electronics, electromagnetic, and thermal components, interconnection issues also arise, leading to cope simultaneously with several physical challenges. This paper gives an example of a multidisciplinary approach to propose smart integrated drive solution dedicated to middle power embedded systems.

   Linear Flux-Switching Machine Design - A Multi-objective Optimization
By Hendrik MARKS [View]
[Download]

Abstract: In this paper, a linear electric machine is designed for the application of a free-piston engine to generate electrical energy. Due to the high thermal load on the mover, only machine topologies with a passive mover are considered. It is shown that flux-switching machines (FSM) are capable of fulfilling the requirements.A preceding thermal analysis provides the temperature distribution within the machine. The selection of the magnetic materials is determined based on the results. Subsequently an electromagnetic model for a 12 slot/14 pole FSM is created and optimized. Due to the application, the use of three design targets is appropriate: The efficiency, the mass of the mover and the permanent magnet (PM) mass. To take all the objectives into account, a multicriterial optimization using the NSGA-II algorithm is performed.

   Modeling and Measuring the Bearing Capacitance of Radially Loaded Bearings
By Stefan QUABECK [View]
[Download]

Abstract: Bearing currents can severely reduce the lifetime of electrical machines. The parasitic bearing capacitancecausing these currents depends on speed, lubricant temperature, and bearing load. In radiallyloaded bearings, the capacitance of each bearing ball varies over its angular position, exhibiting highcapacitance in the load zone and lower capacitance outside of it. This work proposes a method formeasuring the bearing capacitance over the angular position and provides a model that incorporates thiseffect.

   Subtle Design and Performance Comparison of WF-FSM and DC-VRM for Large-Scale Direct-Drive Wind Power Generation
By Udochukwu AKURU [View]
[Download]

Abstract: We attempted the design and performance comparison of field-excited flux modulation machines viz., wound-field flux switching machine versus DC Vernier reluctance machine at large-scale power. Based on simple conceptual topologies and performance comparison using finite element analysis, preliminary findings at ~5.5 MW show potentials, while in-depth optimization is required for stiffer conclusions.

   Thermal behavior impact on the electric motor shape multi-objectiveoptimization
By Aissam Riad MEDDOUR [View]
[Download]

Abstract: The paper investigates the impact of thermal behaviour on the electric car motor's shape optimization for a realistic driving cycle. The motor model is created by integrating electromagnetic-thermal modelling on Ansys electromagnetic and Motor-CAD, which is then linked to Matlab's genetic optimization algorithm evaluating the motor's price and performance.

EPE 2022 - DS1h: Electrical Machines and Actuators
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2022 ECCE Europe - Conference > EPE 2022 - Topic 05: Renewable Energy Power Systems > EPE 2022 - DS1h: Electrical Machines and Actuators
	[return to parent folder]

	Combining Schwarz-Christoffel Mappings and Biot-Savart Law to Calculate the High Frequency Current Distribution Inside a Single Slot By Torben FRICKE	[View] [Download]
Abstract: A novel calculation approach for the current and field distribution inside conductors in a slot at high frequencies based on a combination of a Schwarz-Christoffel Mapping and Biot-Savart Law is presented. The stator and rotor laminations are modeled using a surface impedance boundary condition and the results are validated against 2D FEA. The proposed method is overall less capable and mature than widely available 2D FEA software but has some appeal in niche applications, where licensing issues with FEA software are of concern or a high degree of integration into a broader tool chain is desirable.

	In-slot Cooling of Electrical Machines Using Traditional Techniques and Additive Manufacturing By Ahmed HEMBEL	[View] [Download]
Abstract: This paper covers in-slot cooling methods used for the effective cooling of electric machines. Both traditional and additively manufactured cooling solutions are discussed throughout the paper. A new additively manufactured heat exchanger is also presented in the paper. It is shown that the proposed solution can boost current density to 83 Arms/mm2 using PCB as stator winding.

	Influence of an Electrical Machine on the Dimension and Packaging of Multi-Machine Systems By Thomas STÖCKL	[View] [Download]
Abstract: The design of multi-machine systems requires the estimated installation space of the e-machines. Developed models calculate the space for different speeds and power concepts. Hereby, the advantages of combining several drives is shown. The paper illustrates the importance of machine parameters and number of units for a multi-machine system. The outlook gives an impression on how the efficiency of the e-machine can be improved by the operation management.

	Integrated motor drive: A multidisciplinary approach By Betty LEMAIRE-SEMAIL	[View] [Download]
Abstract: Integrated drives are becoming a target for manufacturers aiming at addressing the increasing market of electrical embedded systems, such as e-transportation systems. Anyway, the integration of the power converter inside the electrical machine induces challenges if compactness is required. Additionally to the research of the best choices for the power electronics, electromagnetic, and thermal components, interconnection issues also arise, leading to cope simultaneously with several physical challenges. This paper gives an example of a multidisciplinary approach to propose smart integrated drive solution dedicated to middle power embedded systems.

	Linear Flux-Switching Machine Design - A Multi-objective Optimization By Hendrik MARKS	[View] [Download]
Abstract: In this paper, a linear electric machine is designed for the application of a free-piston engine to generate electrical energy. Due to the high thermal load on the mover, only machine topologies with a passive mover are considered. It is shown that flux-switching machines (FSM) are capable of fulfilling the requirements.A preceding thermal analysis provides the temperature distribution within the machine. The selection of the magnetic materials is determined based on the results. Subsequently an electromagnetic model for a 12 slot/14 pole FSM is created and optimized. Due to the application, the use of three design targets is appropriate: The efficiency, the mass of the mover and the permanent magnet (PM) mass. To take all the objectives into account, a multicriterial optimization using the NSGA-II algorithm is performed.

	Modeling and Measuring the Bearing Capacitance of Radially Loaded Bearings By Stefan QUABECK	[View] [Download]
Abstract: Bearing currents can severely reduce the lifetime of electrical machines. The parasitic bearing capacitancecausing these currents depends on speed, lubricant temperature, and bearing load. In radiallyloaded bearings, the capacitance of each bearing ball varies over its angular position, exhibiting highcapacitance in the load zone and lower capacitance outside of it. This work proposes a method formeasuring the bearing capacitance over the angular position and provides a model that incorporates thiseffect.

	Subtle Design and Performance Comparison of WF-FSM and DC-VRM for Large-Scale Direct-Drive Wind Power Generation By Udochukwu AKURU	[View] [Download]
Abstract: We attempted the design and performance comparison of field-excited flux modulation machines viz., wound-field flux switching machine versus DC Vernier reluctance machine at large-scale power. Based on simple conceptual topologies and performance comparison using finite element analysis, preliminary findings at ~5.5 MW show potentials, while in-depth optimization is required for stiffer conclusions.

	Thermal behavior impact on the electric motor shape multi-objectiveoptimization By Aissam Riad MEDDOUR	[View] [Download]
Abstract: The paper investigates the impact of thermal behaviour on the electric car motor's shape optimization for a realistic driving cycle. The motor model is created by integrating electromagnetic-thermal modelling on Ansys electromagnetic and Motor-CAD, which is then linked to Matlab's genetic optimization algorithm evaluating the motor's price and performance.