Aviation built-in permanent magnet starter generator

Abstract

The invention discloses an aviation internal type permanent magnetism starting generator, which belongs to the field of electrical engineering, and comprises a permanent magnet, a permanent magnetism magnet yoke, a rotor iron core, an armature winding and an armature iron core. The aviation internal type permanent magnetism starting generator is characterized in that the rotor iron core is fixed to one side of an air inlet of the low pressure shaft of an aero-engine; the permanent magnetism magnet yoke and the armature iron core are respectively disposed at two axial sides of the rotor iron core; the circumference of the rotor iron core is uniformly provided with fan-shaped through holes in the number of 5k (k is a positive integer greater than 1); One side of the permanent magnetism magnet yoke orienting towards the rotor iron core is fixed with a fan-shaped permanent magnet; one side of the armature iron core orienting towards the rotor iron core is provided with fan-shaped protruding armature pole; the magnetizing direction of each adjacent three permanent magnets is of the same, and each armature pole is winded with a concentration type armature coil. The aviation internal type permanent magnetism starting generator is advantageous in that the temperature of the air inlet is quite low, which can adapt to the work of the permanent magnet; the moment of inertia of the rotor iron core is small, the pole number of the rotor is small, and high-speed rotation can be realized; the aviation internal type permanent magnetism starting generator can be operated both as a motor and a generator, and thereby it is very suitable for an aviation internal type starting generator.

Description

technical field [0001] The invention relates to an aviation built-in permanent magnet starter generator, which belongs to the technical field of aviation motors. Background technique [0002] More electric aircraft and all-electric aircraft are the inevitable trend of modern aircraft development. Having a starter generator is an important feature of a multi-electric aircraft. On the basis of the traditional aviation gas turbine engine, the magnetic suspension bearing for the built-in starter generator to support the engine rotor is installed inside the aircraft engine, eliminating the need for a transmission mechanism and running at a high speed. Provide sufficient power to supply components such as distributed electronic control systems, electric fuel pumps and electric actuators. The starter generator can operate as a starter or as a generator, supplying power to electrical equipment after the engine is started. [0003] The overall industry strength of my country's engi...

AI Technical Summary

Problems solved by technology

[0007] In the traditional permanent magnet starter, the distance between the armature winding and the permanent magnet is too close, so the demagnetization or even demagnetization of the permanent magnet by the armature reaction is obvious

Images