Controller for brushless DC motor of air conditioner

Abstract

This invention relates to a BCLD motor control device of air-conditions, which commutates and processes AC input voltage smoothlessly to convert it to a DC output voltage, which is converted to a definite voltage circuit with a given voltage according to an assigned standard voltage, therefore, the brushless DC motor can keep a certain speed and accuracy of controlling the speed is increased so as to reduce unecessary power loss.

Description

technical field [0001] The invention relates to an air conditioner, in particular to a brushless direct current (BLCD) motor control device of an indoor unit to provide a stable constant voltage to the brushless direct current motor, thereby ensuring that the driving speed of the brushless direct current motor does not change and improving the A brushless DC motor control device (BLCD motor control1 device of airconditioning) that controls the accuracy of the driving speed of the brushless DC motor. Background technique [0002] Please refer to Fig. 1, which is a block diagram illustrating the structure of an air-conditioning brushless DC motor control device based on the prior art. The prior art air-conditioning brushless DC motor control device includes an input terminal 1; through the above-mentioned input The rectification and smoothing of the AC voltage at the terminal is rectified and smoothed, and the rectification and smoothing part 2 outputs the driving voltage; the...

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Problems solved by technology

[0005] However, based on the prior art brushless DC motor control device for air conditioners, when the AC voltage input to the indoor unit changes, the rectified and smoothed drive voltage will also change accordingly, resulting in a change in the drive speed of the brushless DC motor. change, it is difficult to accurately control the driving speed of the brushless DC motor

[0006] This shows that the above-mentioned existing air-conditioning brushless DC motor control device obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

In order to solve the problems existing in the air-conditioning brushless DC motor control device, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and there is no suitable structure for general products to solve the above problems. This is obviously a problem that relevant industry players are eager to solve

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