Design method of motor parameters based on global optimal annual consumption of water pump load

Abstract

The invention provides a motor parameter design method based on global optimization of annual loss and power consumption of a water pump load. Interval weight division and eigenvalue calculation are carried out on motor power. Therefore, output power Pmec corresponding to the minimum discrete degree in each sub-interval is determined. The magnetic field condition of a permanent magnet synchronousmotor is analyzed. The total loss is calculated according to the output power and a self-derived more accurate loss calculation model of the water pump motor, so that the design parameters of the motor are iteratively and optimally calculated by taking the total loss as a target function for optimizing multiple variables to obtain a proper water pump motor, and the purposes of energy conservationand consumption reduction are achieved. Specific load matching is carried out, the loss modeling of a motor has higher accuracy and pertinence, the efficiency in a typical period is higher, the problems of time-varying property and diversity of the load of the water pump motor can be solved, and the energy-saving effect is achieved.

Description

technical field [0001] The present invention relates to the technical field of water pump motor parameter design, and more specifically, relates to a globally optimal motor parameter design method based on the annual power consumption of the water pump load. Background technique [0002] Energy saving and consumption reduction has become an extremely urgent task for the development of the international community. At present, most of the water pump motors in water plants are motors on the market, which are designed based on the load under the rated power. For specific load matching, the operation of the water pump motor usually does not take into account the change of the user's water consumption, and the change of the user's water consumption will cause the change of the motor load output power, so the motor efficiency will also change accordingly. The existing water pump motor design does not consider how to make the motor achieve the best efficiency during the load output ...

AI Technical Summary

Problems solved by technology

[0003] The output power of the water pump motor load varies according to the current user volume and seasonal changes, so it has time-varying and variable characteristics. For example, the water consumption in summer is more than that in other seasons, and the water consumption is more at night than at noon. , the existing pump motors in water plants do not take into account the changes in user demand, which will lead to a decrease in the overall efficiency of the pump motor and an increase in power consumption, failing to achieve the characteristics of high efficiency and energy saving

Images