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Multipole combined AC exciter

An AC exciter and composite technology, applied in the direction of synchronous generators, etc., can solve the problems of insurmountable interaction interference, reliability, maintainability, axial length increase, etc., and achieve light weight, no electromagnetic harmful interference and anti-corrosion Strong interference ability and the effect of shortening the axial length

Inactive Publication Date: 2003-09-24
TELLHOW SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is designed according to the single-frequency AC exciter in the disclosed ZL94242412.X harmonic excitation brushless AC synchronous generator, then two AC exciters need to be designed, obviously the structure is complicated, the cost is high, and the manufacture is cumbersome, especially the axial length increases Many, reliability and maintainability
The SF-1-12 and DB-10 single-pivot dual-frequency brushed generators that have been disclosed cannot overcome the interactive interference when they work dynamically and with nonlinear loads, and cannot be used in demanding occasions

Method used

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  • Multipole combined AC exciter
  • Multipole combined AC exciter
  • Multipole combined AC exciter

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Embodiment Construction

[0008] The present invention includes a stator 1 and a rotor 4. The stator 1 is provided with a DC winding 2 and a DC winding 3. Their pole pairs are respectively P1 and P2, and P1=10, P2=20. These two sets of windings are loosely embedded in the punching slots of the stator core, and the iron core is stamped from 1mm steel sheet. The two windings have a small span and short ends. It is stamped from 0.5 silicon steel sheet, the pitch of the coil is Y=1-2, and the end of the winding is short. Due to the small number of grooves, the tooth width and the large groove area, the manufacturability is good and the reliability is high. When the DC power supply is passed through the stator winding, the rotor armature is placed to generate two kinds of alternating currents of different frequencies, which are rectified and supplied to dual-frequency generator excitation. By adjusting the DC current in the stator 1, the power generation of the rotor armature can be adjusted to meet the ne...

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Abstract

The invention discloses a multi-pole compound AC exciter, which includes a stator and a rotor. Two sets of windings are arranged in the stator. The stator windings are connected with direct current, and the corresponding two sets of windings are arranged in the rotor. When the rotor reaches the rated speed, a Two alternating currents of different frequencies are rectified and supplied to the main generator for excitation. Due to the setting of the multi-pole compound AC exciter, the synchronous generator with double frequency conversion can be brushless and the axial length can be greatly reduced, the control link is also greatly simplified and reliable, and the electromagnetic compatibility is good. Very good.

Description

technical field [0001] The invention relates to power supply equipment, in particular to a multi-pole compound AC exciter. Background technique [0002] Generally, dual-frequency (or multi-frequency) synchronous generators have a brush structure with slip rings and brushes; sparks are generated during operation, radio interference is large, sliding is easy to wear, and maintenance and repair are difficult. The market urgently needs dual-frequency, variable-frequency synchronous generators to achieve brushless. To make this kind of double-frequency variable-frequency synchronous generator into a brushless motor, it is necessary to design a new type of AC exciter, which should be small in size, light in weight, compact in structure and excellent in performance. If it is designed according to the single-frequency AC exciter in the disclosed ZL94242412.X harmonic excitation brushless AC synchronous generator, then two AC exciters need to be designed, obviously the structure is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K19/26
Inventor 林政安梅昆毛勇袁学兰
Owner TELLHOW SCI TECH CO LTD
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