Energy-saving system of fans and pumps based on minimum power algorithm based on flow-power curve

Abstract

The invention provides a fan and water pump energy saving system adopting a minimum power algorithm based on a flow-power curve. The fan and water pump energy saving system adopts the minimum power algorithm based on the flow-power curve is that under the equality constraint condition, i is equal to 1, 2, ellipsis, n, so that the required working frequency of various fans or water pumps is obtained. The traditional structure that only one pump works in a frequency conversion state and other pumps work in a power frequency state is changed, multiple fans and water pumps are all operated in a frequency conversion / low frequency state, under the condition of meeting the required flow, the minimum operation power point can be found through frequency conversion, at the moment, the energy saving effect is very obvious, and any one pump can be started for operation at any time, so that the above problem is completely solved, the overhaul of equipment is facilitated, and the overhaul cost and the maintenance cost are reduced.

Description

technical field [0001] The invention relates to a fan water pump energy-saving system based on the minimum power algorithm of the flow-power curve, especially in high-power occasions, the energy-saving effect is very remarkable. Background technique [0002] For a long time, the operation control design of fans and pumps is relatively simple, and the issue of energy saving has not been paid enough attention. Except that the control device matched with the main engine of individual equipment may have an energy-saving operation mode, in general, the fan flow is designed according to the maximum air volume demand. Its adjustment method is usually controlled by means of baffle, damper, return flow, start-stop motor, etc., which cannot form a closed-loop control, and rarely consider power saving. The flow design of the water pump is also designed according to the maximum flow rate, and the pressure regulation method can only be controlled by controlling the size of the valve and...

AI Technical Summary

Problems solved by technology

However, the current main mode is the combination of the number of fans and pumps running at power frequency and the frequency conversion of a single unit to meet the required flow rate, which has a great impact on the energy-saving benefits of the water supply system, so the energy-saving effect of the fan and pumps frequency conversion system is still relatively large. Potential can be tapped

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