Simulation Method of Electromagnetic Noise of Claw Pole Generator Under Turn-to-turn Short Circuit of Stator Winding

Abstract

The invention relates to an electromagnetic noise simulation method for a claw-pole generator under a stator winding turn-to-turn short circuit. The working circuit model of the claw pole generator and the electromagnetic field finite element model of the claw pole generator are simulated in the working circuit model to obtain the stator three-phase current of the claw pole generator when the stator winding is short-circuited between turns; 2. The stator three-phase current Load it into the circuit model of the electromagnetic field finite element model, and simulate the electromagnetic force on the claw pole generator when the winding turns are short-circuited; 3. Load the electromagnetic force onto the structural finite element model of the claw pole generator through grid mapping , and the simulation results of the electromagnetic noise of the claw-pole generator when the winding turns are short-circuited are obtained. Compared with the prior art, the present invention can quantitatively analyze the influence of the two forms of inter-turn short circuit of the stator winding on the electromagnetic noise.

Description

Technical field [0001] The present invention relates to a finite element simulation field of a claw pole generator, in particular, to an electromagnetic noise simulation method of a cutting of a stator winding inter-turns. Background technique [0002] Because the claw pole generator has the advantages of simple structure, low manufacturing costs, high reliability, currently in the field of automotive generators. However, high-temperature high vibration engine compartment working environment and operating conditions of high-electrical load high magnetic loads cause the claw pole generator to easily show short-circuit faults between windings. Identification, diagnosis, and short circuit failure of windings, diagnosis, and short-circuiting, electromagnetic noise characteristic analysis are a research key and difficulty in the automotive claw pole motors. It is mainly mainly studied by test methods. However, the test method requires processing prototype, and the test cycle is long. ...

AI Technical Summary

Problems solved by technology

This method can only simulate and calculate the electromagnetic noise under normal conditions, but cannot calculate the electromagnetic noise when the winding turns are short-circuited. In addition, this method loads the distributed electromagnetic force on each stator tooth surface as a concentrated force, changing the electromagnetic The spatial distribution characteristics of the force will bring errors to the simulation results

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