The Design of Air conditioning compressor stator winding

Air conditioning compressor is the heart of the refrigeration system, performance and quality of its pivotal drive motor. The design of the motor is going to make both long-term and stable work of the compressor, but also with the compressor body to achieve the best match, thereby improving performance of the compressor, so that obtain the best value for money.

Stator winding form of the structure, there is usually a double winding, single winding, concentrated winding, distributed winding and so on. Generally use single centralized compressor motor windings. Because the sine winding certain difficulties in the production process of the compressor motor, it is generally not used. Serial number of conductors per phase can be air-gap flux density Bg Zφ1 basis to select the air gap flux density Bg generally take 6500 ~7500Gs. Diameter selection to take into account the efficiency of current density and tank full rate of the compressor motor. Efficiency of the compressor motor is generally designed in 80%~82%. Due to the high temperature rating of the compressor motor is enameled, and the motor has cooled refrigerant heat away, so the current density can be designed to be higher, the general desirability 7 ~ 8 A / mm2. Slot machine embedded line for full rate of 75% can be designed, hand-embedded line can be designed at 80%. Compressor rotor generally use aluminum squirrel cage rotor end ring is designed to take into account the impact and compression have adequate safety distance and rotor resistance of the motor performance between the pump, so the ends of the ring design size can vary, rotor bar chute degrees generally take 1 to 1.5 times the stator tooth pitch.