Dynamic Characteristics Of Permanent Magnet Motor And Structural Optimal Design

The permanent magnet synchronous motor has simple structure, small volume, light weight, high efficiency and power factor. Since the 1970s, it has engaged in the research of the motor and drive system of the scholars and researchers. Through efforts, after nearly 20 years, hardware design and control on developing, the product is commercial applications into industrial production fields.China has the high cost of oil pipeline, oil pumping unit number, large capacity motor, power. The motor of pumping and energy are very seriously, a new generation of permanent magnet synchronous motor is present to replace traditional asynchronous motor of the best choice.This paper is mainly aiming at the existed in the field induction"big horse-drawn small carts", puts forward low torque permanent magnet motor energy saving solutions. First, permanent magnet synchronous motor development of domestic situation of investigation. Secondly, in the understanding of permanent magnet synchronous motor characteristics and application, and on the basis of the research dynamic characteristics of permanent magnet motor, and puts forward the design and the structural parameters of key parts and the mechanical strength are analyzed.last, low torque of permanent magnet synchronous motor makes a detailed calculation, the operation and control circuit design.This kind of motor speed rotating parts, because cancelled gear transmission, simplify the transmission mechanism, improving the accuracy and reliability of equipment, eliminates because of gear noise and vibration, so the study of motor caused a scientific research, the production and use of units of the note.with the permanent magnet material and motor manufacturing prices lower, Corresponding power electronic devices and high-speed development of microprocessors, drive system theory and practice and improving continuously, the permanent magnet synchronous motor and its drive system will be further development and application, in certain situations will gradually replace the existing ordinary excitation motor and the drive system.