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Nov 102013

ac converter-01 An inverter in an air conditioner is used to control the speed of the compressor motor to allow continuously regulated temperature. Inverter-equipped air conditioners have a variable-frequency drive that incorporates an adjustable electrical inverter to control the speed of the motor and thus the compressor and cooling output.

A comparison of temperature regulation between a traditional air conditioner and an inverter air conditioner

The variable-frequency drive uses a rectifier to convert the incoming alternating current (AC) current to direct current (DC) and then uses pulse-width modulation of the DC current within an electrical inverter to produce AC current of a desired frequency. The AC current is used to drive a brushless motor or an induction motor. As the speed of an induction motor is proportional to the frequency of the AC current, the compressors runs at different speeds. A microcontroller can then sample the current ambient air temperature and adjust the speed of the compressor appropriately.

Benefits & Features of Air Conditioner Inverters:

An inverter fitted to an air conditioner is used to control the speed of the compressor motor to allow continuously regulated temperature and thus an estimated 30% energy saving.

Eliminating stop-start cycles increases efficiency, extends the life of components, and helps eliminate sharp fluctuations in the load the air conditioner places on the power supply. Ultimately this makes inverter air conditioners less prone to breakdowns, cheaper to run, and the outdoor compressor is generally quieter than a standard air conditioning unit’s compressor.

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