Three-phase permanent-magnet synchronous motor rotor punching sheet suitable for both line starting and variable frequency starting

Abstract

The invention relates to a three-phase permanent-magnet synchronous motor rotor punching sheet suitable for both line starting and variable frequency starting. The three-phase permanent-magnet synchronous motor rotor punching sheet is an iron core punching sheet which is super-ultra-high in efficiency and suitable for a rotor of a high pull-out torque three-phase rare-earth permanent magnet synchronous motor and a rotor of a variable-frequency and variable-speed motor three-phase permanent magnet synchronous motor, and is used for a permanent magnet synchronous motor with a 132 base. The three-phase permanent-magnet synchronous motor rotor punching sheet is provided with a rotor punching sheet body made of a low-loss silicon steel sheet in a punching mode. Starting rod holes are evenly distributed on the outer circumference of the rotor punching sheet body, and W-shaped magnetic steel grooves are evenly formed in the rotor punching sheet body. A magnetic isolation bridge A is arranged between the lower portions of the starting rods and the magnetic steel grooves, and a magnetic isolation bridge B and a magnetic isolation bridge C are arranged between every two adjacent magnetic steel grooves. Rigidity reinforced screw holes and rotor shaft holes are formed in the rotor punching sheet body.

Description

technical field [0001] The present invention relates to a common three-phase permanent magnet synchronous motor rotor stamping for line starting and variable frequency starting, which is a common three-phase permanent magnet synchronous motor rotor stamping for line starting and variable frequency starting, which belongs to ultra-ultra-high efficiency and high out-of-step torque The common iron core punching sheet for the rotor of the three-phase rare earth permanent magnet synchronous motor and the variable frequency speed regulating three-phase permanent magnet synchronous motor is used for the permanent magnet synchronous motor with 132 frames. Background technique [0002] Currently commonly used permanent magnet motor rotor punching, due to the unreasonable design of the rotor punching, the overload capacity of the permanent magnet motor is low, resulting in frequent out-of-step and burning of the permanent magnet motor; The operation of the motor is not stable enough; ...

AI Technical Summary

Problems solved by technology

[0002] Currently commonly used permanent magnet motor rotor punching, due to the unreasonable design of the rotor punching, the overload capacity of the permanent magnet motor is low, resulting in frequent out-of-step and burning of the permanent magnet motor; The operation of the motor is not stable enough; cracks are generated in the magnetic steel during operation, which reduces the power factor of the permanent magnet motor, increases the armature current, increases the copper consumption of the stator, reduces the efficiency, the power saving effect is not ideal, and the electromotive force decreases during operation, resulting in active energy consumption. power rate drop

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