Robust model predictive current control method and device for permanent magnet synchronous motor

A permanent magnet synchronous motor, model prediction technology, applied in motor control, current controller, motor generator control, etc., can solve problems such as parameter mismatch, reduce current error, improve current control effect, and reduce calculation burden Effect
CN113258837AActive Publication Date: 2021-08-13CHINA UNIV OF MINING & TECH
7 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2021-08-13

Smart Images

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

Abstract

The invention discloses a robust model predictive current control method and device of a permanent magnet synchronous motor. According to the device, target stator current d-axis and q-axis current components output by a stator current instruction generation module, rotor electrical angular velocity output by a conversion module and stator current direct-axis and quadrature-axis components under a rotating coordinate system output by a current vector conversion module are calculated, and an optimal voltage vector is obtained; a driving signal required by an inverter power switch device according to the obtained optimal voltage vector is generated; and the driving signal of the inverter power switch device acts on a three-phase inverter module, so that the permanent magnet synchronous motor realizes robust model predictive current control. The device effectively reduces the current error caused by parameter change when the predicted current is calculated by the algorithm, reduces the parameter sensitivity of the control algorithm, improves the current control effect, and is small in calculation burden and convenient to apply.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of motor control, and in particular relates to a robust model predictive current control device and method for a permanent magnet synchronous motor. Background technique

[0002] Permanent magnet synchronous motors have the advantages of high operating efficiency, high power density, and simple control, and are widely used in transmission fields of various voltages and power levels. Since it is not constrained by the modulation strategy of the converter, model predictive current control (Model Predictive Current Control, MPCC) has received extensive attention in the field of motor drives. By predicting the current state in the future, the current response close to the expected current can be obtained, thereby improving the current control performance.

[0003] Traditional permanent magnet synchronous motor model predictive current control often needs to calculate the predicted current according to the stator resistan...

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