Low-voltage wide-speed adjustment permanent magnet synchronous motor

Abstract

The invention discloses a low-voltage wide-speed adjustment permanent magnet synchronous motor. The low-voltage wide-speed adjustment permanent magnet synchronous motor includes a case, an armature and a feedback element; the front and back of the case are respectively provided with a front end cover and a rear end cover; the armature is arranged in the case; an output shaft is arranged in the case; an end portion of the output shaft extends out from the case; the feedback element abuts against the output shaft; the magnetic steel of a motor rotor is of an eccentric structure; and an air gap magnetic field generated by the magnetic steel of the motor rotor is in sinusoidal distribution. According to the low-voltage wide-speed adjustment permanent magnet synchronous motor of the invention, the motor rotor is of the eccentric structure, so that the air gap magnetic field can be in sinusoidal distribution; when vector control is adopted, the torque ripple of the motor is smaller, the low-speed stability of the motor is excellent, and therefore, high-precision servo tracking of a system can be benefitted. The low-voltage wide-speed adjustment permanent magnet synchronous motor has the advantages of high overall power density, excellent low-speed stability and reliable performance.

Description

technical field [0001] The invention relates to a permanent magnet synchronous motor with low voltage and wide speed regulation. Background technique [0002] The current driving source of the rotating mechanism usually uses a high-voltage servo drive motor. In order to achieve high voltage, a booster circuit needs to be added to the system to convert the voltage into a higher voltage to drive the motor. This type of booster circuit is bulky. low efficiency. At the same time, the current high-precision servo drive motor uses a grating encoder, which has poor environmental applicability and is not suitable for vehicle applications. [0003] Therefore, there is an urgent need for a low-voltage driving motor to overcome the above-mentioned defects. Contents of the invention [0004] The purpose of the present invention is to provide a low-voltage wide-range speed-regulating permanent magnet synchronous motor, which has small volume, high power density and good stability...

AI Technical Summary

Problems solved by technology

[0002]The current driving source of the rotating mechanism usually uses a high-voltage servo drive motor. In order to achieve high voltage, a booster circuit needs to be added to the system to convert the voltage increase into a higher The voltage can drive the motor to work, this kind of boost circuit is bulky and inefficient

At the same time, the current high-precision servo drive motor uses a grating encoder, which has poor environmental applicability and is not suitable for vehicle applications.

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