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Speed control system of fan motor of air conditioner

A speed control and motor technology, applied in the direction of motor control, AC motor control, control system, etc., can solve the problem that the speed control system cannot be applied

Inactive Publication Date: 2006-03-29
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, because of the permanent magnet rotor 104, the speed control range is limited within 790 ~ 880rpm
Thus, the speed control system according to the conventional art cannot be applied to an air conditioner requiring a speed control range of 100 rpm or more

Method used

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  • Speed control system of fan motor of air conditioner
  • Speed control system of fan motor of air conditioner
  • Speed control system of fan motor of air conditioner

Examples

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Embodiment Construction

[0028] Reference will now be made in detail to preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0029] A preferred embodiment of the speed control system of the fan motor of the air conditioner according to the present invention will be described below with reference to FIGS. Wherein the frequency converter is used to drive the drive motor of the compressor; and the speed control system can control the fan motor by utilizing the frequency of the frequency converter output power without any special device Next, expand the speed control range of the fan motor, where the frequency converter is used to drive the drive motor of the compressor.

[0030] FIG. 4 is a circuit diagram showing a structure of a speed control system of an air conditioner fan motor according to an embodiment of the present invention.

[0031] As shown in the figure, the speed control system of the air conditioner fan motor according to the present in...

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Abstract

A speed control system of a fan motor of an air conditioner is disclosed. A speed control system of a fan motor of an air conditioner comprises: an inverter having a power output terminal connected to a single-phase power input terminal of the fan motor which has a single-phase stator including a main coil and a sub coil, an induction rotor and a permanent magnet rotor installed between the stator and the induction rotor; and a three-phase driving motor connected to the power output terminal of the inverter and driving a compressor of an air conditioner by power received from the inverter.

Description

technical field [0001] The invention relates to a fan motor of an air conditioner, and in particular to a speed control system of the fan motor of an air conditioner. Background technique [0002] Generally, a single-phase induction motor is used as a fan motor of an air conditioner. In order to generate rotational torque, a single-phase induction motor supplies both a magnetizing current that generates a rotating magnetic field and an induced current generated in the motor to a winding connected to an external power terminal. [0003] Single-phase induction motors have limitations in improving efficiency due to the primary and secondary copper losses of the rotor. To solve this limitation, a HIM (Hybrid Induction Motor) shown in FIGS. 1 and 2 is recently used as a fan motor of an air conditioner. In the following, an induction motor with a permanent magnet rotor is defined as a HIM. [0004] FIG. 1 is a schematic cross-sectional view of a HIM according to conventional te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/04F24F11/46F24F11/62F24F11/74F24F11/86F25B1/00
CPCF25B2600/11Y02B30/741H02P27/04H02P5/74F25B2600/021Y02B30/746F24F11/0079F24F11/77Y02B30/70F25B49/022F24F11/88F25B41/35H02P6/085Y10S388/9072
Inventor 韩承道申铉定
Owner LG ELECTRONICS INC