A flux leakage adjustable brushless hybrid excitation synchronous generator

A hybrid excitation synchronous and adjustable technology, which is applied to synchronous generators, synchronous motors with stationary armatures and rotating magnets, electromechanical devices, etc., can solve the problems of limited magnetic field adjustment range and increased axial length, and achieve operation Wide speed range, small flux leakage loss, widening the effect of field weakening range

Active Publication Date: 2021-12-07
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: existing hybrid excitation motors have problems such as axial magnetic flux path, increased axial length and limited magnetic field adjustment range

Method used

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  • A flux leakage adjustable brushless hybrid excitation synchronous generator
  • A flux leakage adjustable brushless hybrid excitation synchronous generator
  • A flux leakage adjustable brushless hybrid excitation synchronous generator

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Embodiment Construction

[0025] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0026] Such as Figure 1 to Figure 5 As shown, a brushless hybrid excitation synchronous generator with adjustable flux leakage in the present invention includes a stator 1 and a rotor 2, and the stator winding 11 is a three-phase AC winding or a dual three-phase AC winding. The rotor 2 has a four-pole structure, and the electric excitation poles 21 and permanent magnet poles 22 are alternately arranged. The electric excitation poles 21 adopt a harmonic current brushless excitation scheme, and the permanent magnet poles 22 adopt permanent magnets 27 in a V-shaped embedded arrangement. A leakage flux path 5 is provided between the two ends of the permanent magnet 27 and the permanent magnet pole 22. The leakage flux path 5 passes through for the permanent magnet leakage flux when the field is weakened, and the excitation flux passe...

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Abstract

The invention provides a brushless hybrid excitation synchronous generator with adjustable flux leakage, which includes a stator and a rotor. Alternately arranged into at least a four-pole structure, the rotor harmonic winding is connected to the excitation winding, the electric excitation pole adopts harmonic current brushless excitation, the permanent magnet pole adopts a V-shaped embedded arrangement of permanent magnets, and the two ends of the permanent magnet and the permanent magnet A leakage flux path is provided between the magnetic poles, the leakage flux path is used for the leakage flux of the permanent magnet when the field is weakened, and the excitation flux is passed by the leakage flux path when the magnetization is increased. Based on the existing harmonic excitation technology, the present invention proposes a harmonic excitation-permanent magnet flux leakage adjustable brushless hybrid excitation synchronous generator, which can be applied to various industrial fields such as wind power generation and hybrid electric vehicles.

Description

technical field [0001] The invention relates to a brushless hybrid excitation synchronous generator with adjustable flux leakage. Background technique [0002] Synchronous motors have excellent characteristics such as high power density and high efficiency, and are widely used in industrial fields such as electric vehicles, wind power generation, and automated manufacturing equipment. However, there are always three problems to be solved in the permanent magnet synchronous motor: (1) the excitation flux generated by the permanent magnet is difficult to adjust; (2) the permanent magnet material has the risk of demagnetization and the motor cannot work; (3) as the permanent magnet The increasingly widespread application of magnetic materials leads to their high prices and the need to reduce their usage. Hybrid excitation motor with high power density of permanent magnet motor and adjustable excitation flux of electric excitation motor is an important way to solve the above pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/14H02K29/00H02K19/28
CPCH02K19/28H02K21/14H02K29/00H02K2213/03
Inventor 姚飞孙立志安群涛
Owner DONGHUA UNIV
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