Motor-pump integrated parameter identification method for asynchronous motor

A technology of parameter identification and motor pump, which is applied in the control of generators, motor generators, electronic commutation motors, etc. It can solve the problems of motor detachment, low accuracy of motor parameters, and inability to calculate accurate parameters of asynchronous motors. Achieve the effect of solving the cumbersome identification steps and accurate power flow analysis and transient simulation

CN114154329APending Publication Date: 2022-03-08CHINA UNIV OF PETROLEUM (EAST CHINA)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-03-08

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Abstract

The invention provides an asynchronous motor and pump integrated parameter identification method, which comprises the following steps of: 1, establishing an asynchronous motor state equation and a pump load torque equation according to pump coincidence characteristics, and describing the operation condition of a motor and a pump by using the equations; by analyzing the active and reactive characteristics of the pump load and distinguishing the constant torque load, the pump load can be effectively distinguished; and 3, a particle swarm parameter identification method is established, so that integrated identification of the pump is realized, a large number of calculation steps are omitted, and the result is more accurate. According to the method, machine-pump integrated identification of the asynchronous motor can be realized, the identification result is more accurate, and the accuracy of overall modeling of the system is improved.
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Description

technical field

[0001] The invention belongs to the field of parameter identification of asynchronous motors, and in particular relates to a parameter identification method for machine-pump integration. Background technique

[0002] With the development of science and technology, more and more electrical equipment has appeared in people's living and production environments, and has become the basis of industrial manufacturing in contemporary society. Among them, the three-phase asynchronous motor is currently the most used electrical equipment, and it is used in many fields such as chemical industry, smelting, and mechanical production. The use of multiple fields also brings more energy consumption. According to the statistics of relevant departments, the annual power consumption of asynchronous motors accounts for more than 60% of the total energy consumption of the whole society, and it is the most energy-consuming basic production facility. It is estimated that reducing ...

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Embodiment Construction

[0043] Such as figure 1 As shown, the present invention provides a method for identification of machine-pump integration parameters, and the specific steps of the embodiment are as follows:

[0044] (1) For the pump load that needs to be identified, obtain its historical transient power data or obtain transient power data through disturbance tests.

[0045] (2) Taking the obtained transient power data as input, using the pump load model of the present invention as a mathematical model, and using the particle swarm algorithm as a parameter identification method to identify the parameters to be identified for the asynchronous motor and the pump load, the specific process is as follows Figure 5 shown.

[0046] (3) Bring the identified parameters into the asynchronous motor model and pump load model. This model can replace the equivalent load to facilitate power flow analysis or transient simulation of the entire system containing the load.

[0047] The above are only embodimen...