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Servo motors are widely used in many industrial applications. These motors require precise control of acceleration, speed, and position. Different designs can be found in the literature. This paper will compare the response of two of the common types and will propose a new servo motor design that uses a smaller amount of magnet, lowering the price of the motor. The proposed motor would be able to...
This paper presents a novel methodology for the variable leakage flux interior permanent-magnet (VLF-IPM) motor taking advantage of the variable leakage flux property in the rotor core controlled by the $q$-axis current, without any additional components. The fundamental phenomenon is explained with finite-element analysis results; then, the theoretical equations expressing the variable flux linkage...
This paper presents a novel methodology for the variable leakage flux IPM (VLF-IPM) motor taking advantage of variable leakage flux property in the rotor core controlled by q-axis current without any additional components. The fundamental phenomenon is explained with FEA results, then, the theoretical equations expressing variable flux linkage controlled by q-axis current have been conducted. The...
This paper presents a novel variable magnetomotive force, flux intensifying IPM (VFI-IPM) machine which uses only low coercive force magnets to reduce usage of rare earth metals. The VFI-IPM machine is designed with a characteristic of Ld>Lq, which is typical for FI-IPM machines, and uses low coercive force magnets with magnetization level control. A theoretical magnet operating point analysis...
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