Rare-earth permanent magnetic radial inverse controlled brushless AC generator

A technology of alternator and rare earth permanent magnet, which is applied to the static parts of the magnetic circuit, the rotating parts of the magnetic circuit, the shape/style/structure of the magnetic circuit, etc., and can solve the problems of magnetomotive force consumption, output voltage change, and high cost , to achieve the effect of increased excitation copper loss, increased iron loss, and high efficiency

Inactive Publication Date: 2006-11-15
上海达道能源科技有限公司
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AI Technical Summary

Problems solved by technology

[0002] At present, permanent magnet motors have been widely used in various fields. However, the non-adjustable magnetic field generated by the rotor during the operation of permanent magnet generators limits the wide application of rare earth materials in generator technology, especially in wind power generators and various vehicles and ships. Generator, due to the wide range of engine speed changes, the output voltage also changes
In order to control the output voltage of the permanent magnet generator, people can currently use the following methods: (1) Thyristor (silicon controlled silicon) voltage regulation; due to its complex circuit and high cost, it is rarely used
(2) Compound excitation method; both permanent magnet and excitation method for voltage regulation; the disadvantage of this structure is that there are two additional air gaps in the magnetic circuit, which consume a large amount of magnetomotive force, and cannot fully utilize the advantages of rare earth permanent magnets. Small size, high output power

Method used

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  • Rare-earth permanent magnetic radial inverse controlled brushless AC generator

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Embodiment Construction

[0013] Depend on figure 1 It can be seen that the rotor (7) is composed of a magnetic conductor and a permanent magnet (8). The rotor permanent magnets (8) are evenly distributed along the circumference of the rotor (7) magnet conductors, the rotor permanent magnets (8) are made of rare earth permanent magnets, and are fixed on the rotor (7) magnet conductors by screws or bonding methods, and the rotor permanent magnets ( 8) The width is the same as the width of the stator teeth (2). The annular silicon steel sheet stator (1) has the same number of armature winding slots (4) and inverse control winding slots (6), and the number of stator teeth (2) on the stator (1) is the armature winding slot (4) Summed up with the number of slots (6) of the inverse winding, the width of the stator teeth (2) is the same as the width of the rotor permanent magnets (8). The armature windings (3) and the reverse control windings (5) are respectively connected in sequence to form a winding loop...

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Abstract

The invention relates to the magneto characterized in that the rotor is composed of the magnetizer and the permanent magnet, the radial magnet frame is adopted. The magnetic pole of the rotor showing the tile shape or the strip used by the rare earth permanent magnet, distributes equally along the circle of the rotor, the width of the magnetic pole and the tooth width of the stator are the sameness. The circle stators have the armature winding and athwart controlling winding which are the same compared to the pole in quantity.

Description

1. Technical field [0001] The invention relates to an alternator, which is technically characterized in that the stator adopts an inverse control mode for voltage regulation, and can be applied to small generators, wind generators and various generators for vehicles and ships. 2. Background technology [0002] At present, permanent magnet motors have been widely used in various fields. However, the non-adjustable magnetic field generated by the rotor when the permanent magnet generator works, limits the wide application of rare earth materials in generator technology, especially in wind turbines and various vehicles and ships. Generator, due to the wide range of engine speed changes, the output voltage also changes. In order to control the output voltage of the permanent magnet generator, people can currently use the following methods: (1) thyristor (thyristor) voltage regulation; due to its complex device circuit and high cost, it is rarely used. (2) Compound excitation me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/16H02K1/27H02K3/12
Inventor 王敦庆谢建余
Owner 上海达道能源科技有限公司
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