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Permanent magnet synchronous motor (PMSM) closed-loop control system

A permanent magnet synchronous motor, closed-loop control technology, applied in control systems, AC motor control, single motor speed/torque control, etc. Development needs and other issues, to achieve the effect of high application and promotion value, high reliability, and perfect functions

Inactive Publication Date: 2017-08-22
HUBEI UNIV OF AUTOMOTIVE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the magnetic circuit structure of permanent magnet synchronous motors is complex, and traditional design methods cannot meet the development needs of high-performance permanent magnet synchronous motors.

Method used

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  • Permanent magnet synchronous motor (PMSM) closed-loop control system
  • Permanent magnet synchronous motor (PMSM) closed-loop control system
  • Permanent magnet synchronous motor (PMSM) closed-loop control system

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Experimental program
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Effect test

Embodiment Construction

[0029] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0030] 1 Working principle of permanent magnet synchronous motor

[0031] The internal structure of the permanent magnet synchronous motor is shown in figure 1 :

[0032] From figure 1 It can be seen that the permanent magnet synchronous motor is composed of two parts: the rotor and the stator. The stator refers to the part of the motor that does not move when it rotates. The space for placing it is three-phase symmetrical armature windings A1A2, B1B2, and C1C2 with a mutual difference of 120 degrees. They are connected in a star or triangle shape. The rotor is the part that rotates when the motor rotates. A pair of poles made of permanent magnet steel. In addition, compared with ordinary synchronous motors, permanent magnet synchronous motors must also be equipped with a rotor position detector to detec...

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PUM

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Abstract

The invention discloses a permanent magnet synchronous motor (PMSM) closed-loop control system that comprises a main control board module and a driver board module. The main control board module is used for issuing instructions and processing various faults, and comprises an MCU minimum system with a STM32F103ZET6 as a core, a switching power supply module, a TFT color display module, a key module, a speed control module, a peripheral circuit module and a photoelectric isolation module. The whole closed-loop control system has good signal isolation, overvoltage protection, undervoltage protection, overcurrent protection and over-temperature detection circuits, and has high reliability. The hardware schematic of the system is designed and made into a PCB. A test result shows that the system can control the operation of the PMSM well. In software, the processor of the system is provided with a PMSM control library function and is short in development cycle. In hardware, the system is low in cost, complete in function and high in reliability. The system has a high application and promotion value.

Description

technical field [0001] The invention belongs to the technical field of power electronics and relates to a closed-loop control system of a permanent magnet synchronous motor. Background technique [0002] Before the 1980s in the last world, DC motors were the most widely used in servo systems, especially in most high-performance servo motor systems, DC servo systems were used, because DC motors have simple speed control and good speed control and start-up. , Braking performance, smooth speed regulation within an economical range. While traditional DC motors have many advantages, they have one fatal flaw—the motor has brushes. The commutation of the motor must be realized by the joint action of the commutator and the brush. The commutation of the DC motor will cause problems such as electric sparks, electromagnetic interference and noise inside the motor. The friction of motor rotation will cause serious wear and tear on the brushes and commutator of the motor, resulting in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/08H02P23/00H02P23/14
CPCH02P6/08H02P23/0077H02P23/14
Inventor 黄海波卢军程登良熊武赵熠聂向前
Owner HUBEI UNIV OF AUTOMOTIVE TECH
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