Tantangan
Sebagai peralatan inti sektor industri untuk pemisahan padat-cair, cair-cair, dan klasifikasi padat-padat (mis. pemisahan kristalisasi kimia, dehidrasi pati pangan, dehidrasi lumpur pengolahan air limbah, dan pemisahan mineral), sentrifus mode frekuensi-tetap tradisional mengandalkan “kontaktor start-stop + pengaturan kecepatan puli”, dengan titik lemah seperti pemborosan energi, akurasi pengaturan kecepatan rendah, dan guncangan start-stop besar. Dengan teknologi kontrol vektor inverter, solusi ini menyesuaikan kebutuhan beban sentrifus pada tiap kondisi operasi (start, akselerasi, separasi stabil, dan discharge deselerasi), menghadirkan kontrol cerdas sepanjang proses.
Solusi
With the goals of "adapting to load characteristics, ensuring separation efficiency, and reducing comprehensive costs", the design is carried out from four aspects: working condition analysis, hardware selection, system architecture, and control logic. The full operation cycle of a centrifuge is divided into 4 core stages, and the load and speed regulation requirements vary significantly in each stage, so it is necessary to design targeted inverter control strategies.
Start-up stage: Static resistance is high, and the demand for starting torque is high (requiring 1.2-1.5 times the rated torque).
Acceleration stage: The load gradually stabilizes as the speed increases, and it is necessary to quickly reach the target separation speed.
Stable separation stage: It is a constant torque load, and precise maintenance of speed stability is required (deviation ≤ ±1%).
Deceleration and discharge stage: The inertial load is large, and rapid yet smooth deceleration is necessary to avoid material residue.