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Control system and control method for three-phase four-bridge-arm permanent magnet synchronous motor

A three-phase four-arm, permanent magnet synchronous technology, used in motor generator control, AC motor control, electronic commutation motor control, etc. The effect of double closed-loop control

Inactive Publication Date: 2013-07-10
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this traditional topology will be difficult to maintain the safe and reliable operation of the system when there is a phase loss or a single-phase open circuit fault. require occasions, greatly restricting its field of application

Method used

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  • Control system and control method for three-phase four-bridge-arm permanent magnet synchronous motor
  • Control system and control method for three-phase four-bridge-arm permanent magnet synchronous motor
  • Control system and control method for three-phase four-bridge-arm permanent magnet synchronous motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] A three-phase four-arm permanent magnet synchronous motor control system with fault-tolerant function, its composition includes: a main circuit, the 220V single-phase AC input 1 of the main circuit is connected with a single-phase rectifier circuit 2, and the single-phase The rectifier circuit is connected with the four-arm inverter 3, and the four-arm inverter is connected with the permanent magnet synchronous motor 8 through the bridge arm A4, the bridge arm B5, the bridge arm C6, and the bridge arm D7. A, bridge arm B, and bridge arm C are connected to the current sampling circuit 10 , the permanent magnet synchronous motor and the photoelectric code disc 11 .

Embodiment 2

[0085] The three-phase four-arm permanent magnet synchronous motor control system with fault-tolerant function described in embodiment 1, the described photoelectric code disc is connected with the QEP unit 12 of the control circuit, and the described QEP unit is connected with the PI controller D20, and the Described current sampling circuit is connected with A / D module 14, and described A / D module, described QEP unit are respectively connected with PI controller A17, PI controller B18, PI controller C19 through coordinate transformation 15, described The PI controller D is connected with the speed controller 21, the speed controller is connected with the PI controller A, and the PI controller A, PI controller B, and PI controller C are jointly connected with the current controller 16, the current controller is connected to the 3D-SVPWM control 13, the 3D-SVPWM control is connected to the photoelectric isolation drive circuit 9, and the photoelectric isolation drive circuit is...

Embodiment 3

[0087] In the three-phase four-arm permanent magnet synchronous motor control system with fault tolerance described in Embodiment 1 or 2, the digital display tube 22 is connected to the SPI unit 23, the host computer 24 is connected to the SCI unit 25, and the keyboard 26 is connected to the I / O unit B27 is connected, and the fault detection unit 28 is connected with the I / O unit A29.

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Abstract

The invention relates to a control system and a control method for a three-phase four-bridge-arm permanent magnet synchronous motor. When a conventional three-phase three-bridge-arm main circuit topological structure is short of phase or has a single-phase broken fault, the safe and reliable running of a system is difficult to maintain, and the occasions with strict requirements on redundancy and reliability of a control system in aviation, navigation, explosion protection and the like are limited. The control system structurally comprises a main circuit, wherein the 220V single-phase alternating-current input (1) of the main circuit is connected with a single-phase rectification circuit (2); the single-phase rectification circuit is connected with a four-bridge-arm inverter (3); the four-bridge-arm inverter is connected with the permanent magnet synchronous motor (8) through a bridge arm A (4), a bridge arm B (5), a bridge arm C (6) and a bridge arm D (7); the bridge arm A, the bridge arm B and the bridge arm C are connected with a current sampling circuit (10); and the permanent magnet synchronous motor is connected with a photoelectric coded disc (11). The control system and the control method are used for controlling the three-phase four-bridge-arm permanent magnet synchronous motor.

Description

Technical field: [0001] The invention relates to a control system and a control method of a three-phase four-arm permanent magnet synchronous motor. Background technique: [0002] The traditional three-phase three-arm main circuit topology adopts the voltage space vector modulation (SVPWM) technology, which can also reduce the harmonic content of the winding current and improve the utilization rate of the DC bus voltage, thereby reducing the torque ripple of the motor and broadening the motor's capacity. speed range. However, this traditional topology will be difficult to maintain the safe and reliable operation of the system when there is a phase loss or a single-phase open circuit fault. Where required, its application field is greatly limited. Invention content: [0003] The purpose of the present invention is to provide a three-phase four-arm permanent magnet synchronous motor control system and control method. [0004] Above-mentioned purpose realizes by following ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14H02P25/02H02P27/12
Inventor 高晗璎刘端增李伟力王贵成宋宏明徐冰
Owner HARBIN UNIV OF SCI & TECH
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