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A.C./D.C permanent-magnet synchronous generator

A permanent magnet synchronous and permanent magnet motor technology, which is applied to multi-output synchronous motors, synchronous motors with stationary armatures and rotating magnets, synchronous machine parts, etc., can solve the problem that the electromagnetic field of permanent magnet generators cannot be adjusted. Low efficiency of the motor, hidden dangers in the operation of the power supply system, etc.

Inactive Publication Date: 2009-03-11
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are relatively few researches and applications on permanent magnet synchronous generators at home and abroad, and permanent magnet synchronous generators that provide both AC and DC power supply methods have not been reported at home and abroad. The main problem of permanent magnet generators is that permanent magnet generators The electromagnetic field cannot be adjusted. When the motor is loaded, the voltage adjustment rate of the motor will increase with the change of the load.
Conventional electric excitation generators have hidden dangers in the operation safety of the power supply system because of the brushes, and the efficiency of the permanent magnet motor is lower than that of the permanent magnet motor due to the copper loss caused by the excitation current

Method used

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  • A.C./D.C permanent-magnet synchronous generator
  • A.C./D.C permanent-magnet synchronous generator
  • A.C./D.C permanent-magnet synchronous generator

Examples

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Embodiment Construction

[0009] A four-pole permanent magnet synchronous generator with a rotating speed of 1500 rpm. The stator of the permanent magnet motor has a stator core 3 on which there are three sets of three-phase windings. One set of windings is an AC winding 2 placed in the upper layer of the stator slot. The distance between the windings is used to reduce harmonics, and it is used to provide AC power. The remaining two sets of windings are DC windings 1. The phase difference between the two sets of windings is 30 degrees in electrical angle. They are placed in the lower layer of the stator slot. The whole pitch is used, and the rectifier is connected to output DC. It supplies power for DC loads, and the three windings are electrically insulated; the rotor of the motor is composed of a rotor core 6 and a rotating shaft 7. The surface of the rotor adopts a composite magnetic pole structure, and the magnetic poles are composed of NdFeB permanent magnets 4 and soft magnetic materials 5. Layers...

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Abstract

The stator of AC / DC permanent magnet generator includes three sets of winding in three phases. One set of winding is in use for providing AC power. Being in difference of 30 degrees of electrical angle each other, the other two sets of winding are connected to rectifier for supplying power for DC load. Rotor of generator is in surface recombination pole type structure. Magnetic pole is composed of permanent magnetic material of Rb-Fe-B and a soft magnetic material. Glass tape without woof is wrapped and fixed on rotor. A pole of permanent magnetism occupies 144 degrees of electrical angle. Being located at back pole tip on surface of magnetic pole, soft magnet occupies 9 degrees. The disclosed AC / DC permanent magnet synchronous generator possesses higher efficiency and better external characteristic.

Description

1. Technical field [0001] The invention belongs to the technical field of generators. It particularly relates to an AC / DC permanent magnet synchronous generator. 2. Background technology [0002] At present, there are relatively few researches and applications on permanent magnet synchronous generators at home and abroad, and permanent magnet synchronous generators that provide both AC and DC power supply methods have not been reported at home and abroad. The main problem of permanent magnet generators is that permanent magnet generators The electromagnetic field cannot be adjusted. When the motor is loaded, the voltage adjustment rate of the motor will increase with the change of the load. Conventional electric excitation generators have hidden dangers in the operation safety of the power supply system because of the brushes, and the efficiency is lower than that of permanent magnet motors due to the copper loss caused by the excitation current. 3. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/48H02K21/02H02K21/12H02K1/27H02K3/04
Inventor 孙雨萍马传霞
Owner SHANDONG UNIV