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Motor control system, compressor and motor heating starting method

A technology of motor control and heating cycle, which is applied in the direction of controlling electromechanical brakes, controlling electromechanical transmission devices, control systems, etc., can solve the problems of easy demagnetization of permanent magnets, and achieve the effect of avoiding demagnetization

Inactive Publication Date: 2016-11-23
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a motor control system, which can solve the problem that the permanent magnets of the motor are easy to demagnetize

Method used

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  • Motor control system, compressor and motor heating starting method
  • Motor control system, compressor and motor heating starting method
  • Motor control system, compressor and motor heating starting method

Examples

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Embodiment Construction

[0034] The core of this specific embodiment is to provide a motor control system, which can solve the problem that the permanent magnet of the motor is easy to demagnetize. The core of this specific embodiment is also to provide a compressor including the above-mentioned motor control system, and a method for heating and starting the motor.

[0035] Hereinafter, an embodiment will be described with reference to the drawings. In addition, the examples shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configurations shown in the following embodiments are not limited to be essential to the solution of the invention described in the claims.

[0036] The motor control system provided in this embodiment includes a stator winding, a rotor and a drive controller, wherein the stator winding includes an A-phase winding 11 , a B-phase winding 12 and a C-phase winding 13 , and the rotor includes a permanent magn...

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Abstract

The invention discloses a motor control system, a compressor and a method for heating and starting the motor. The motor control system includes a stator winding and a rotor. The stator winding includes an A-phase winding, a B-phase winding, and a C-phase winding. The rotor includes a permanent magnet , further comprising a drive controller for controlling the energization current of the stator windings, the drive controller can control the direct currents of different directions and sizes to be fed into the A-phase windings, B-phase windings and C-phase windings respectively, so as to Make the rotor rotate at a preset angle and perform positioning heating. After positioning and heating, the drive controller can control the direction and magnitude of the direct current fed into the A-phase winding, B-phase winding, and C-phase winding, so that After the rotor continues to rotate the preset angle in the same direction, positioning heating is performed. With such arrangement, the motor control system provided by the present invention can solve the problem that the permanent magnet of the motor is easy to demagnetize.

Description

technical field [0001] The invention relates to the technical field of electric motors, and more specifically, relates to a motor control system, a compressor and a method for heating and starting the electric motor. Background technique [0002] The low temperature environment of the motor of the compressor easily leads to a decrease in the anti-demagnetization ability of the motor, especially when the compressor fails to start in a low temperature environment, the permanent magnet of the motor has a great risk of demagnetization. In order to reduce the risk of permanent magnet demagnetization when the compressor is started at low temperature, the existing technology preheats the permanent magnet of the motor rotor by applying a certain current to the motor winding before the compressor starts, so as to increase the temperature of the permanent magnet and improve the temperature of the compressor motor. Anti-demagnetization ability. [0003] However, due to the change of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14H02P21/22
CPCH02P21/14
Inventor 肖勇王晶胡余生陈彬
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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