Unlock instant, AI-driven research and patent intelligence for your innovation.

A Direct Torque Control System for a Nine-Phase Flux Switching Permanent Magnet Motor

A direct torque control, permanent magnet motor technology, applied in the direction of electronic commutation motor control, control system, vector control system, etc., can solve problems such as torque ripple, steady-state error, stator copper loss, etc.

Active Publication Date: 2019-01-18
SOUTHEAST UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In traditional direct torque control, in order to ensure the dynamic characteristics of the fast response of the motor torque and improve the voltage utilization rate, the voltage vectors usually selected are the largest vectors, and only one vector acts in each sampling period. This will inevitably lead to large torque ripple, steady state error and stator copper loss

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Direct Torque Control System for a Nine-Phase Flux Switching Permanent Magnet Motor
  • A Direct Torque Control System for a Nine-Phase Flux Switching Permanent Magnet Motor
  • A Direct Torque Control System for a Nine-Phase Flux Switching Permanent Magnet Motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0027] figure 1 It is a traditional nine-phase flux switching motor direct torque control system, which mainly includes the following parts: flux observation module, speed torque estimation module, flux regulator, torque regulator, voltage vector selection table, inverter devices, nine-phase flux switching motors, etc. First sample the current and voltage of the nine-phase flux switching motor, estimate the flux linkage and torque after the coordinate transformation and compare it with the given value, output the difference through the hysteresis loop, then look up the table to select the voltage vector, and add the voltage vector The motor is controlled by the inverter.

[0028] The traditional direct torque control scheme only considers the effect of the vector in the fundamental wave space, an...

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

PUM

No PUM Login to View More

Abstract

The invention provides a direct torque control system of a nine-phase flux-switching motor, wherein a control structure is the same as a traditional direct torque control structure. Meanwhile, the software complexity and hardware facilities are maintained unchanged. Different from the traditional direct torque control structure, a voltage vector selection table is adopted, so that the method is simpler, clearer and more effective.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a direct torque control system of a nine-phase magnetic flux switching permanent magnet motor. Background technique [0002] Since the 21st century, the seriousness of global energy shortages, environmental pollution and global warming has aroused widespread concern for energy-saving technologies around the world. The consideration of energy-saving and consumption-reducing has reached an urgent point. Among them, energy-saving of motor systems It has become a topic of common concern in the world. In addition to vigorously accelerating the promotion of high-efficiency motors, the use of high-power AC frequency conversion speed control systems has very obvious energy-saving effects. There are two main ways to achieve high-power speed regulation: multi-level motor system and multi-phase motor system. The former has been widely used in high-voltage occasions in the past ten years, while...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/30H02P21/20H02P21/18
Inventor 樊英赵雪浩程明
Owner SOUTHEAST UNIV