EPE Association: EPE 2015 - LS2c: Electrical Machines

EPE 2015 - LS2c: Electrical Machines
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 04: Electrical Machines and Drive Systems > EPE 2015 - LS2c: Electrical Machines

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   Design and Analysis of Cross-Coupled 2 DOF Planar Direct Drive Motor
By Shuhei YAMAGUCHI [View]
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Abstract: In this paper, a novel structured planar direct drive motor for use in industrial equipment is proposed. The characteristics are its flat structure compared to conventional 2 Degrees Of Freedom (DOFs) motors and realization of 2 DOFs motion within one device. The structure of the planar motor consists of two sets of coils placed perpendicularly and a check-patterned planar surface of magnets. Two three-phase alternating current are used in each coil sets independently which alternate by the displacement of position. The force combination of the coil sets enables a 2 DOFs motion which is parallel to the planar magnet surface. The working feasibility is clarified through simulations, and verified by experiments.

   New Capacitive Synchronous AC Machine
By Arie SHENKMAN [View]
[Download]

Abstract: The paper proposes a new type of the synchronous AC machine operated on a principle of the electric field effect. The proposed machine has smaller size and lighter weight than the standard electromagnetic synchronous machines with the same rated parameters. Another important advantage is a simple structure of the machine, which simplifies the production process and reduces the costs of the motor. The paper also presents extensive simulation results of the proposed capacitive machine. The simulation results show that the proposed machine has high industrial potential and able to develop relatively high power output.

   Prediction of Rotor Slotting Harmonics in Induction Machines in the Presence of Air-Gap Eccentricity
By Matthias SAMONIG [View]
[Download]

Abstract: The paper analyses the influence of induction machine (IM) design on rotor slotting harmonics used for sensorless control strategies. These harmonics have a direct impact on flux and rotor position estimation accuracy. Therefore prediction of their magnitude helps in selecting suitable machine designs with regard to stator/rotor slotting and winding configuration. The paper at hand focuses on the effects that lead to the formation of the rotor slotting harmonic, by analyzing them with a simplified inductance phasor model, finite element (FE) simulations and measurement results. These three means are used to prove the existence of certain machine slotting and winding configurations that result in rotor slotting harmonic mitigation, or even complete cancelation. As will be shown, the magnitude of this mitigation effect is directly linked to a fault induced asymmetry originating from mixed (static and dynamic) rotor eccentricity within the machine.

   Transverse-flux Motor for Enhanced Torque and Reduction of Torque Ripple
By Kazuto SAKAI [View]
[Download]

Abstract: Windings are significant factors affecting the manufacturing cost and reliability of motors. For use in electric vehicles, motors should be highly efficient, inexpensive, and highly reliable; moreover, high efficiency and reliability are major requirements for wind generators. Unfortunately, the armature windings of such motors are difficult to manufacture with automated techniques and are not very reliable. Thus, to obtain a motor at a low cost and with high reliability, we investigated a transverse-flux motor (TFM) containing a torus coil. In this study, we propose a novel TFM capable of increasing torque and discuss its basic characteristics and reduction of torque ripple. The rotor comprises radially magnetized permanent magnets, and the stator comprises torus coils and axial 9-shaped cores. The stator core is alternately arranged in the circumferential direction and has radial and axial air gaps. Furthermore, each core component of the same phase unit of the stator is arranged so as to shift the relative angular position to other core components to reduce torque ripple. The results of our analysis confirm that the enhanced TFM produces a high torque per motor volume of 4.88 kN·m/m3 and reduces the torque ripple up to 7\% .

EPE 2015 - LS2c: Electrical Machines
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2015 ECCE Europe - Conference > EPE 2015 - Topic 04: Electrical Machines and Drive Systems > EPE 2015 - LS2c: Electrical Machines
	[return to parent folder]

	Design and Analysis of Cross-Coupled 2 DOF Planar Direct Drive Motor By Shuhei YAMAGUCHI	[View] [Download]
Abstract: In this paper, a novel structured planar direct drive motor for use in industrial equipment is proposed. The characteristics are its flat structure compared to conventional 2 Degrees Of Freedom (DOFs) motors and realization of 2 DOFs motion within one device. The structure of the planar motor consists of two sets of coils placed perpendicularly and a check-patterned planar surface of magnets. Two three-phase alternating current are used in each coil sets independently which alternate by the displacement of position. The force combination of the coil sets enables a 2 DOFs motion which is parallel to the planar magnet surface. The working feasibility is clarified through simulations, and verified by experiments.

	New Capacitive Synchronous AC Machine By Arie SHENKMAN	[View] [Download]
Abstract: The paper proposes a new type of the synchronous AC machine operated on a principle of the electric field effect. The proposed machine has smaller size and lighter weight than the standard electromagnetic synchronous machines with the same rated parameters. Another important advantage is a simple structure of the machine, which simplifies the production process and reduces the costs of the motor. The paper also presents extensive simulation results of the proposed capacitive machine. The simulation results show that the proposed machine has high industrial potential and able to develop relatively high power output.

	Prediction of Rotor Slotting Harmonics in Induction Machines in the Presence of Air-Gap Eccentricity By Matthias SAMONIG	[View] [Download]
Abstract: The paper analyses the influence of induction machine (IM) design on rotor slotting harmonics used for sensorless control strategies. These harmonics have a direct impact on flux and rotor position estimation accuracy. Therefore prediction of their magnitude helps in selecting suitable machine designs with regard to stator/rotor slotting and winding configuration. The paper at hand focuses on the effects that lead to the formation of the rotor slotting harmonic, by analyzing them with a simplified inductance phasor model, finite element (FE) simulations and measurement results. These three means are used to prove the existence of certain machine slotting and winding configurations that result in rotor slotting harmonic mitigation, or even complete cancelation. As will be shown, the magnitude of this mitigation effect is directly linked to a fault induced asymmetry originating from mixed (static and dynamic) rotor eccentricity within the machine.

	Transverse-flux Motor for Enhanced Torque and Reduction of Torque Ripple By Kazuto SAKAI	[View] [Download]
Abstract: Windings are significant factors affecting the manufacturing cost and reliability of motors. For use in electric vehicles, motors should be highly efficient, inexpensive, and highly reliable; moreover, high efficiency and reliability are major requirements for wind generators. Unfortunately, the armature windings of such motors are difficult to manufacture with automated techniques and are not very reliable. Thus, to obtain a motor at a low cost and with high reliability, we investigated a transverse-flux motor (TFM) containing a torus coil. In this study, we propose a novel TFM capable of increasing torque and discuss its basic characteristics and reduction of torque ripple. The rotor comprises radially magnetized permanent magnets, and the stator comprises torus coils and axial 9-shaped cores. The stator core is alternately arranged in the circumferential direction and has radial and axial air gaps. Furthermore, each core component of the same phase unit of the stator is arranged so as to shift the relative angular position to other core components to reduce torque ripple. The results of our analysis confirm that the enhanced TFM produces a high torque per motor volume of 4.88 kN·m/m3 and reduces the torque ripple up to 7\% .