課題
固液分離・液液分離・固固分級の中核設備である遠心分離機（化学結晶分離、食品でん粉脱水、汚水処理スラッジ脱水、鉱物選別など）は、従来の定周波数運転では「接触器のON/OFF＋プーリ変速」に依存し、エネルギー浪費、低速制御精度、大きな起動停止衝撃といった課題があります。本ソリューションはインバータのベクトル制御技術により、起動・加速・安定分離・減速排出といった各工程の負荷要件に適合し、全工程のインテリジェント制御を実現します。
ソリューション
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.