Tantangan
Sebagai peralatan daya inti di produksi industri dan bidang sipil (ventilasi pabrik, induced draft boiler, aerasi pengolahan air limbah, suplai udara AC gedung), kipas mode frekuensi-tetap tradisional mengalami “operasi berlebih kapasitas” (motor berdaya besar menggerakkan kipas berbeban ringan), konsumsi energi berlebih, dan kesulitan pengaturan kecepatan. Solusi ini menggabungkan kontrol kecepatan berbasis inverter dengan karakteristik beban kipas (beban torsi kuadrat, daya sebanding pangkat tiga kecepatan) sehingga menghadirkan operasi hemat energi, kontrol aliran presisi, dan manajemen cerdas; cocok untuk retrovit maupun pembangunan baru di metalurgi, kimia, pengolahan air, dan HVAC gedung.
Solusi
With the core objectives of "energy conservation first, stability and reliability, and intelligent controllability", this solution conducts design from three aspects: hardware selection, system architecture, and control logic. The specific contents are as follows:
Hardware Selection: Matching Fan Load Characteristics
Inverters are selected based on the fan's rated power, rated voltage, and operating conditions (such as whether it involves shock loads and start-stop frequency). The core selection principles are as follows:
1.Inverter power selection: Considering the inrush current during fan startup (usually 1.5-2 times the rated current), the rated power of the inverter must be ≥ 1.1 times the rated power of the fan. If the fan is used in high-temperature and high-dust environments (such as mine ventilation and metallurgical sintering fans), an additional 10%-20% power margin must be reserved to prevent the inverter from overheating and overloading.
Example: For an 11kW three-phase asynchronous fan, a 15kW general-purpose inverter is recommended. If the ambient temperature is > 40°C, it is necessary to upgrade to an 18.5kW inverter and equip it with a matching cooling fan.
System Architecture: Two Modes (Single Unit and Cluster)