Air conditioners operating under these conditions are called fixed-frequency air conditioners. Because the frequency of power supply cannot be changed, the compressor speed of traditional fixed frequency air conditioners is basically constant, and the indoor temperature is adjusted by constantly turning on and off the compressor.
Fixed-frequency air conditioners are relatively mature in comparison with the morning market, and their products and types are also more abundant. Although technically more backward than the inverter air conditioner, it is more stable than the inverter air conditioner.
In order to test the correctness of the load model of variable frequency air conditioners based on detailed mechanism, the load group of variable frequency air conditioners shown in Fig. 4 is equivalent. All variable frequency air conditioners are connected to 380 V bus, and the voltage data is collected from 10 kV bus.
As can be seen from Fig. 6, when the load ratio of frequency conversion air conditioner in the system increases, the voltage drop range of the load point increases significantly, which shows that when the load ratio of frequency conversion air conditioner in the power grid is high, it is unfavorable to the voltage stability of the system. Fig. 6.
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Fixed frequency air conditioner China''s grid voltage is 220 volts and 50 hertz. Air conditioners operating under these conditions are called fixed-frequency air conditioners. …
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