Abstract:In copper smelting industry, the production situation the centrifuge in sewage treatment is that the frequent acceleration and deceleration of centrifuges, the frequency converter consumes energy when accelerating, and the cylinder body has the huge moment of inertia when decelerating, and the electric energy rises back to the converter, it is consumed by the braking unit and the braking resistance, which results in the waste of energy. After the technical transformation, the energy feedback system of AFE active front end is adopted. After the transformation, the braking power is fed back to the power grid through the energy feedback system. This part of power consumption can be reused to achieve energy saving.