Multi-channel motor temperature distribution obtaining method and device for wind driven generator

Abstract

The invention discloses a multi-channel motor temperature distribution obtaining method and device for a wind driven generator. According to the invention, the method includes obtaining the parametersof the single-channel model group and the three-dimensional model through decomposition of the multi-channel motor; setting the temperature of n-1 coupling surfaces in the parameters as a preset temperature; according to the parameters and the three-dimensional models of the n single-flow-channel models, obtaining the n single-flow-channel models; calculating to obtain the inflow temperature of (n-1) groups of two adjacent single-channel models to the same coupling surface; according to the method, correcting and recalculating the coupling surface temperature according to whether the sum of inflow temperatures of two adjacent single-channel models of n-1 groups on the same coupling surface meets a preset condition or not until all coupling surface temperatures meet the preset condition, and finally, calculating the motor temperature distribution according to the coupling surface temperature and other parameters. According to the obtaining method and device provided by the invention, the temperature distribution of the multi-channel motor to be analyzed can be accurately predicted, and the problem of relatively large temperature rise distribution prediction deviation caused by difficult convergence in temperature rise calculation of the multi-channel motor model is solved.

Description

technical field [0001] The invention relates to the technical field of wind power generators, in particular to a method and device for obtaining temperature distribution of a multi-channel motor for wind power generators. Background technique [0002] my country is rich in wind energy resources, and the wind energy reserves that can be developed and utilized are about 1 billion kW, of which, the wind energy reserves on land are about 253 million kW (calculated based on the height of 10m above the ground on land), and the wind energy reserves that can be developed and utilized at sea are about 750 million kW. A total of 1 billion kW. At the end of 2003, the national installed capacity of electric power was about 567 million kW. Wind is one of the energy sources without pollution. And it is inexhaustible and inexhaustible. For coastal islands, grasslands, pastoral areas, mountainous and plateau areas that lack water, fuel, and inconvenient transportation, the use of wind pow...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a multi-channel motor temperature distribution acquisition method and device for wind power generators, which separates the multi-channel model into multiple single-channel models, and contacts between multiple single-channel models The place is set as a coupling surface with a single temperature. By adjusting the temperature of the coupling surface and iteratively calculating multiple models, the temperature distribution of the multi-channel motor that needs to be analyzed can be accurately predicted, which overcomes the multi-channel motor model. The temperature rise calculation is difficult to converge, which leads to a large deviation in the temperature rise distribution prediction

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