Variable frequency air condition compressor permanent magnet direct current motor control system and method

A motor control, permanent magnet DC technology, applied in the direction of AC motor control, control system, motor control, etc., to achieve the effect of smooth start and solve driving problems

Inactive Publication Date: 2017-04-26
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no BLDCM motor control system for the development of inverter air conditioner compressors. Therefore, it is urgent to provide a driver that can realize the operation and speed regulation functions of the BLDCM motor of the electric compressor.

Method used

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  • Variable frequency air condition compressor permanent magnet direct current motor control system and method
  • Variable frequency air condition compressor permanent magnet direct current motor control system and method
  • Variable frequency air condition compressor permanent magnet direct current motor control system and method

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings:

[0019] The present invention provides a permanent magnet DC motor control system for an inverter air conditioner compressor, characterized in that the control system includes: a power module IGBT 1, an MCU processor 2, a position detection circuit 3, a current detection circuit 4, and a power module driver Circuit 5 and motor control circuit 6; power module drive circuit 5 is connected to power module IGBT 1, power module IGBT 1 is connected to BLDCM motor, BLDCM motor is respectively connected to position detection circuit 3 and current detection circuit 4, position detection circuit 3, current detection circuit 4 and the motor control circuit 6 are both connected to the MCU processor 2 , and the MCU processor 2 is connected to the power module drive circuit 5 .

[0020] The motor in the permanent magnet synchronous compressor is controlled by the sensorless vector co...

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Abstract

The present invention relates to a variable frequency air condition compressor permanent magnet direct current motor control system and method. The sensor vector control method is employed to control the permanent magnet synchronous compressor, and the system comprises a power module IGBT, an MCU processor, a position detection circuit, a current detection circuit, a power module driving circuit and a motor control circuit. The control system allows the motor to perform smooth and steady speed regulation and realizes the overcurrent protection of the motor and the low-frequency starting so as to solve the driving problem of the BLDCM motor.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motor control, in particular to a permanent magnet DC motor control system and method for a variable frequency air conditioner compressor. Background technique [0002] A permanent magnet is embedded in the stator of a general DC motor, and the rotor is a coil. The commutation of the brushes makes the magnetic field generated by the permanent magnet steel and the magnetic field generated after the armature winding energized remain vertical during the operation of the motor to generate the maximum rotation speed. moment. The operating principle of the brushless DC motor is basically the same as that of the brushed DC motor, that is, under a magnetic pole with a constant magnetic flux density distribution, the total amount of current flowing into the armature winding is guaranteed to be constant, so as to generate a constant torque and rotate. The moment is only related to the magnitude ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/24H02P25/022
CPCH02P2207/05
Inventor 杨霞吴玄玄
Owner SHENYANG POLYTECHNIC UNIV
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