Adaptive direct torque control method for flux linkage of non-salient pole type permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and direct torque control, which is applied in the direction of motor generator control, electronically commutated motor control, control system, etc., and can solve the problem of low power factor
CN101938245AInactive Publication Date: 2011-01-05NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
3 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Publication Date
2011-01-05
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an adaptive direct torque control method for flux linkage of a non-salient pole type permanent magnet synchronous motor. The method comprises the following steps of: determining a quadrature axis component of a stator flux linkage required at a certain load torque according to motor torque observed by a torque observer; and synthesizing a rectangular axis component of the stator flux linkage to finally obtain a stator flux linkage reference in the direct torque control method by taking the flux linkage of the rotor permanent magnet as a direct axis component of the stator flux linkage by reducing direct axis current of the motor and improving a power factor angle, wherein the stator flux linkage reference adaptively changes along with the variation of the motor load torque; and high-power-factor running of the permanent magnet synchronous motor is realized while torque response rapidity is ensured.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a flux linkage self-adaptive direct torque control method suitable for hidden pole permanent magnet synchronous motors, which belongs to the direct torque control application method of permanent magnet synchronous motors Background technique

[0002] Due to its low loss, high efficiency, high power density and many other advantages, the permanent magnet synchronous motor has its application range covering almost every field of aerospace, national defense, industry and daily life, especially in high-performance AC speed regulation occasions, permanent magnet synchronous The application range of the motor is further expanded.

[0003] The direct torque control method does not require strict magnetic field orientation, saves the current loop, has low dependence on motor parameters, can directly control the motor torque, and has excellent dynamic performance, which has attracted widespread attention.

[0004] In 1997, a permanent ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More