과제
고액 분리, 액액 분리, 고고 분급을 실현하는 산업 핵심 설비(화학 결정 분리, 식품 전분 탈수, 하수 슬러지 탈수, 광물 선별 등)로서 원심분리기는 전통 정주파수 방식으로는 “접촉기 기동정지 + 풀리 변속”에 의존하여 에너지 낭비, 저조한 변속 정밀도, 큰 기동정지 충격이라는 문제가 있었습니다. 인버터의 벡터 제어 기술을 활용해 기동, 가속, 안정 분리, 감속 배출 등 각 운전 조건의 부하 요구에 맞춰 전 공정 지능 제어를 실현합니다.
솔루션
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.