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Double frequency variable brushless power generator with same armature

A technology for synchronous generators and motor stators, applied to synchronous generators, etc., can solve problems such as single-phase and three-phase incompatibility, long motor axial length, harsh environment, etc., achieve perfect sine of the voltage waveform, shorten the axial Good length and electromagnetic compatibility

Inactive Publication Date: 2003-11-19
TELLHOW SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The axial length of the motor is very long, the motor is not economical and reliable enough, and it cannot be used in places with position restrictions
There are thyristors on the rotor for long-term operation, the environment is harsh, and the work tasks are heavy, which is a hidden danger of unreliability
In addition, the existing dual-frequency / variable-frequency generator single-phase and three-phase cannot be used universally, which brings inconvenience to users

Method used

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  • Double frequency variable brushless power generator with same armature
  • Double frequency variable brushless power generator with same armature
  • Double frequency variable brushless power generator with same armature

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Embodiment Construction

[0016] The number of stator slots is 84, the rotor has 32 slots, and the speed is 1500r / min; the power frequency is 50Hz, the intermediate frequency is 400Hz, the power frequency is 30Kw, the intermediate frequency is 10Kw, single and three-phase are common, the outer element of the host stator core is φ395, the inner element is φ300, the length is 350, δ= 0.8 air gap, exciter iron core outer element φ320 inner element φ220, length 60, δ=0.65 air gap, exciter stator slot number 20, rotor slot number 30, among which the number of turns per turn of the power frequency main winding is the number of turns per turn of the auxiliary winding 2 times the number of turns. The number of turns per turn of the intermediate frequency main winding is twice that of the auxiliary winding. The auxiliary winding of the power frequency rotor is 15% of the number of turns per turn of the main winding, and all kinds of windings are equal turns.

[0017] Power frequency stator main winding single-...

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Abstract

The invented generator includes the line frequency generator and mid frequency generator structured in same pivot spindle. The line frequency exciter and the mid frequency exciter is also structured in same pivot spindle. Thus, this kinds of dual frequency-frequency conversion brushless generator is similar to two generators arranged in same spindle. The brushless and coaxial structure makes size reduced and performances increased. In frequency conversion, the line frequency generator runs as synchronous motor and started in asynchronous mode. Electro-magnetic component controls operations of the synchronous motor. Thus, no electric component exists in the rotor so as to raise the reliability greatly. There is no interference of mutual inductance between coils providing good electromagnetic compatibility.

Description

technical field [0001] The invention relates to power supply equipment, in particular to a coaxial double-frequency variable-frequency brushless generator. Background technique [0002] Dual-frequency / variable-frequency generators are mainly brushed structures, with brush-structured slip rings, brushes are easily damaged, sparks are generated and interfered, brushed dual-frequency / frequency-converted coaxial generators interfere with each other, and the voltage waveform is seriously distorted. Cannot be used in many occasions. The dual-frequency / variable-frequency brushless generator developed in recent years has two independent motors with different power frequency and intermediate frequency. The reason is also forced by the electrical interference problem. The axial length of the motor is very long, the motor is not economical and reliable enough, and cannot be used in places with limited positions. The thyristor on the rotor runs for a long time, the environment is har...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K19/16H02K19/38
Inventor 林政安
Owner TELLHOW SCI TECH CO LTD