Based on the south air-return shaft construction project of Shouyang Luyang Xiangsheng Coal Industry Co.,Ltd.of Shanxi,a variable frequency energy-saving parameter adaptive model was constructed.A ventilation system variable frequency energy-saving method based on air volume estimation was introduced,and the energy-saving effect of this method at different ventilation system operating frequencies was compared with the fuzzy grey correlation projection method and variable frequency bypass power frequency control technology.The results showed that the energy-saving effect of using the variable frequency energy-saving method based on air volume estimation was better than that of the fuzzy grey correlation projection method and the variable frequency bypass power frequency control technology at operating frequencies of 40 Hz and 45 Hz.At both operating frequencies,the maximum power savings were 15 kW·h.
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