Structure for measuring iron loss of motor stator core

Abstract

The present invention provides a structure for measuring iron loss of a stator core of a motor, the structure comprising an auxiliary core, two end faces in the longitudinal direction thereof and inner ends of two adjacent stator teeth among a plurality of stator teeth in the radial direction In order to measure the iron loss of the stator core, a plurality of slots and a plurality of stator teeth are alternately formed on the inner peripheral surface of the stator yoke in the circumferential direction. A pair of field windings are provided at portions spaced apart from each other in the longitudinal direction of the auxiliary core. A B coil as a sensor coil is provided on the auxiliary core so as to be positioned inside either one of the pair of field windings. The fixing protrusions protrude from both end faces of the auxiliary core and extend longitudinally, and are inserted into slots between two adjacent stator teeth for fitting and fixing in the circumferential direction. Therefore, it is possible to quantitatively and accurately measure the iron loss of the motor stator core for each manufacturing process.

Description

technical field [0001] The present invention relates to a structure for measuring the iron loss of a motor stator core, and more particularly, to a structure for measuring the manufacturing iron loss of a motor stator core, which can accurately measure a motor stator by using a C-shaped auxiliary core Iron loss in each step of the core manufacturing and assembly process. Background technique [0002] Generally, an electric motor is called a motor, and is a device that converts electrical energy into mechanical energy by using electric power received by a conductor through which a current in a magnetic field flows. The motor generally includes a cylindrical stator fixed into a frame with a coil wound therearound, and a rotor disposed inside or outside the stator and transmitting power while being rotated by induced magnetic force formed near the coil. [0003] According to the principle of rotation, electric motors can be classified into DC motors, induction motors, synchron...

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Problems solved by technology

[0025] In addition, due to the vibration inside the C-shaped auxiliary core 50, a gap may be formed between the two cores, and an error may be caused when measuring the magnetic field strength due to the additional magnetomotive force consumed in the gap.

In addition, the size of the cross section through which the magnetic flux flows changes due to the rotation of the C-shaped auxiliary core 50, so the measurement accuracy will be reduced

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