Active noise reduction method and noise reduction system for charging module

The invention relates to an active noise reduction method and a noise reduction system for a charging module, and belongs to the field of power supply noise reduction. Comprising the following steps: (1) checking fan parameters, device layout and air duct length; (2) selecting a fan with relatively...

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Bibliographische Detailangaben
Hauptverfasser:	YUN QIUCHEN, JIA TIAN, CAO ZHIHUI, XUAN ZHIWEN, CAI SIQI, LIU TIANQIANG, CHENG XINGBANG, ZHAO YANQI, ZHAO QILIANG, MENG FANTI, ZHANG ZHENYUAN, LI XINYUAN, CHEN XIAONAN, ZHAI SIJIE, ZHANG HENGJUN, CUI NINGHAO, YANG JIANGHAO, XIONG ZECHENG, CHENG YUJIE, ZHAO RUIXIA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL HEATING LIGHTING MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS PERFORMING OPERATIONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to an active noise reduction method and a noise reduction system for a charging module, and belongs to the field of power supply noise reduction. Comprising the following steps: (1) checking fan parameters, device layout and air duct length; (2) selecting a fan with relatively low rated rotating speed and maximum air volume; (3) at least two fans are connected in parallel, the length range of an air duct is 200-250 mm, and the width range of the air duct is 320-440 mm; (4) the rated rotating speed range of the fan is 6000 RPM to 8000 RPM, the maximum air volume range is 85 CFM to 93 CFM, and PWM rotating speed control is carried out; and (5) a fan self-adaptive speed regulation method is adopted, so that the fan is prevented from working at the highest rotating speed for a long time. According to the method, a low-voltage fan parallel connection method and reasonable application of the wide air duct are adopted, the measures of optimizing the layout of air duct components and shortening