A split-type high-speed generator with position feedback

Abstract

The invention provides a split type high-speed starter-generator with position feedback which comprises a stator and a rotor. The stator and the rotor form a brushless motor; the stator is fixed at acasing spigot end of a micro-gas turbine; the front end of a rotating shaft of the rotor penetrates into the micro-gas turbine and is fixed by a bearing; the end part of the micro-gas turbine is fixedby a baffle around the rotating shaft; the rotating shaft and the baffle are matched to form a dynamic sealing structure; and the rotating shaft is butted with a transmission shaft of the micro-gas turbine to realize torque transmission. According to the invention, the volume and the weight of a starter-generator system are effectively reduced; the volume of the starter-generator of 1.6 kW in thetraditional scheme is reduced from phi 120 * 200 to phi 85 * 93, and the weight is reduced from 9.8 kg to 1.9 kg; speed reducers are omitted, and thus friction loss and operation noise between the speed reducers are eliminated; and the transmission efficiency is improved.

Description

technical field [0001] The invention relates to a split-type high-speed generator with position feedback, which belongs to the technical field of electrical engineering. Background technique [0002] During the working process of the micro-gas turbine, the starting function of the generator is used to drive the rotor of the micro-gas turbine to rotate in the starting stage. to generator mode. [0003] The speed of the micro-gas turbine is as high as 45,000 revolutions per minute during normal operation. Usually, it is necessary to use a gear reducer to reduce the speed and then connect it to the generator. , during the starting process, the generator rotor needs to swing back and forth to find the position. According to the different rotor positions, it takes 7s to 9s from power-on to ignition of the micro-gas turbine, and the starting speed is relatively slow; the reducer and low-speed generator make the micro-turbine The gas turbine is relatively bulky. For example, the ...

AI Technical Summary

Problems solved by technology

However, high-speed bearings need lubricating oil for lubrication and cooling. Although air bearings do not need a lubrication system and have the characteristics of high speed, air bearings are expensive and bulky, and are not suitable for light weight and small volume requirements.

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