Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Three-level six-phase permanent magnet synchronous motor dual-mode operation control system and control method

A permanent magnet synchronous motor, operation control technology, applied in the control system, motor control, AC motor control, etc., can solve the problems of high harmonics, limited power level of three-level inverter, large motor torque ripple, etc.

Inactive Publication Date: 2019-12-20
HARBIN UNIV OF SCI & TECH
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of the current three-level inverter with limited power level, relatively high harmonics, and large motor torque ripple, and provide a drive topology circuit that does not need to be rebuilt, and only needs to switch between different inverters. The control method can realize the dual-mode operation control system and control method of the three-level six-phase permanent magnet synchronous motor that can operate without stopping after a phase loss fault occurs in a double Y-shifted 30° six-phase permanent magnet synchronous motor

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
  • Three-level six-phase permanent magnet synchronous motor dual-mode operation control system and control method
  • Three-level six-phase permanent magnet synchronous motor dual-mode operation control system and control method
  • Three-level six-phase permanent magnet synchronous motor dual-mode operation control system and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] A three-level six-phase permanent magnet synchronous motor dual-mode operation control system, which consists of: a control circuit, the PWM signal output by the control circuit is electrically connected to the drive circuit 5, and the drive circuit is connected to the six-phase inverter 2 are electrically connected, the six-phase inverter is electrically connected to the three-phase uncontrolled rectification circuit 1 of the frequency converter, the front end of the three-phase uncontrolled rectification circuit of the frequency converter is connected in parallel with a phase loss detection circuit 4, and the The rear end of the three-phase uncontrolled rectification circuit of the frequency converter is electrically connected to the bus voltage detection circuit 3, and the phase loss detection circuit and the bus voltage detection circuit are electrically connected to the A / D interface of the controller. The six-phase inverter mentioned above is input to the A / D inter...

Embodiment 2

[0070] According to the three-level six-phase permanent magnet synchronous motor dual-mode operation control system described in embodiment 1, the described controller is composed of DSP, part number: 7 and FPGA, part number: 6, and the described DSP and the described FPGA electrical connection.

Embodiment 3

[0072] According to the dual-mode operation control system of the three-level six-phase permanent magnet synchronous motor described in Embodiment 1 or 2, the DSP is communicatively connected with the upper computer 16 through the CAN communication circuit 9 .

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 three-level six-phase permanent magnet synchronous motor dual-mode operation control system and control method. The power level of a three-level inverter is limited at present, the harmonics are relatively high and the torque ripple of the motor is high. The system is composed of a control circuit. The PWM signal outputted by the control circuit is electrically connected with a drive circuit (5). The drive circuit is electrically connected with a six-phase inverter (2). The six-phase inverter is electrically connected with the three-phase uncontrolled rectifier circuit(1) of a frequency converter. A phase missing detection circuit (4) is connected in parallel on the front end of the three-phase uncontrolled rectifier circuit of the frequency converter. The rear end of the three-phase uncontrolled rectifier circuit of the frequency converter is electrically connected with a bus voltage detection circuit (3). A phase missing detection circuit and the bus voltagedetection circuit are electrically connected with the A / D interface of a controller. The six-phase inverter is inputted to the A / D interface of the control circuit through a six-phase current sampling circuit 12. The control system and the control method are used for dual-mode operation control of the three-level six-phase permanent magnet synchronous motor.

Description

Technical field: [0001] The invention relates to the field of motor control, in particular to a dual-mode operation control system and control method for a three-level six-phase permanent magnet synchronous motor. Background technique: [0002] At present, two-level inverters and three-level inverters are in a dominant position in AC drive inverters, and the control technology of two-level inverters is more mature, but compared with three-level inverters , the power level is limited. Due to the small number of levels in the two levels, the harmonics of the inverter are relatively high, and the high harmonic content will make the torque ripple of the motor larger; therefore, the power of the inverter should not be too large. In order to reduce the harmonic content of the inverter output and meet the power level requirements and system reliability requirements, a three-level inverter structure is proposed. The three-level drive system can effectively reduce the harmonic conte...

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 Applications(China)
IPC IPC(8): H02P6/08H02P6/16H02P6/28H02P6/34H02P27/08H02P29/028H02P29/032
CPCH02P6/08H02P6/16H02P27/085H02P29/028H02P6/28H02P6/34H02P29/032
Inventor 高晗璎张国强桂勇
Owner HARBIN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products