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An intermediate frequency induction motor for evaporative cycle refrigeration

An induction motor and electric motor technology, which is applied to the starter, motor generator/starter, and electric components of a single multi-phase induction motor, can solve the problems of increasing the volume and weight of the starter box, large active power loss, etc. The effect of compactness, ensuring safe operation, improving service life and reliability

Active Publication Date: 2016-02-24
SHAANXI AVIATION ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Stator circuit series resistance start can reduce the starting current, but the outer series resistance has a large active power loss, and the existence of three resistances increases the volume and weight of the starting box

Method used

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  • An intermediate frequency induction motor for evaporative cycle refrigeration
  • An intermediate frequency induction motor for evaporative cycle refrigeration
  • An intermediate frequency induction motor for evaporative cycle refrigeration

Examples

Experimental program
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Embodiment Construction

[0029] Now in conjunction with embodiment, accompanying drawing, the present invention will be further described:

[0030] The technical solution of the embodiment of the present invention is: the stator winding of the motor adopts three-phase symmetrical double-layer stacked windings, the three-phase windings are independently output, and there are six outlets in total, and the outlets of the three-phase windings are connected to the starter box assembly 5 . The starter box assembly 5 includes: a starter box base 11, a sealed hybrid delay relay SJ, a three-phase AC contactor SC, and the like. When starting, the evaporative cycle refrigeration system controls 115 / / 200VAC, 400Hz AC power supply and 27VDC DC power supply to be connected at the same time, the delay relay SJ starts timing, and the stator winding ends x, y, z are normally closed with the three-phase AC contactor SC respectively. Contacts 7 and 8, 9 and 10, 1 and 12 are connected, and the stator winding of the motor...

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Abstract

The invention relates to an evaporation and circulating refrigeration medium-frequency inductor electromotor. Y starting and star-operation of the electromotor are achieved under the condition of 115 / 200VAC and 400Hz through a starting device installed on the electromotor, the problem that the starting current is large when the electromotor is directly started is solved, and the electromotor has the advantages of frequent starting and long-time work and effectively reduces the impact of the starting current on a power grid; an axial channel is formed in the corresponding position on an iron core of a rotor of the electromotor, the rotor is provided with an axial fan, and self-cooling structures where ventilating window holes are formed in two end covers prolong the service life of the electromotor, improve the reliability of the electromotor and eliminate potential safety hazards of an airplane in the flying process.

Description

technical field [0001] The invention belongs to the technology of aviation motors, and relates to an evaporative cycle refrigeration intermediate frequency induction motor, in particular to an intermediate frequency induction motor used in the evaporative cycle refrigeration system of an official helicopter. Background technique [0002] At present, there is no evaporative cycle refrigeration system in official helicopters, and now it is necessary to install an evaporative cycle refrigeration system. The required power source is a 3.6Kw self-cooling medium frequency induction motor, and it can work for a long time. [0003] 1. The evaporative cycle refrigeration system is suspended outside the helicopter cabin and should withstand a radial 45° rain test, that is, the motor casing cannot have a ventilation window, but can only be provided with a ventilation channel in the axial direction. [0004] 2. Due to the limited capacity of the aircraft power supply grid, when the moto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/28H02P1/32H02K9/06
Inventor 刘宁霞陈保总赵群弼
Owner SHAANXI AVIATION ELECTRICAL
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