Rotor speed/position detection method for aviation switch reluctance starter/generator

Abstract

The invention discloses a rotor speed / position detection method for an aeronautical switch reluctance starter / generator. A switched reluctance motor with the same number of poles as the stator and rotor teeth is coaxially installed on the aeronautical switch reluctance starter / generator. The position detector is a coaxially installed switched reluctance position detector. The position detector injects high-frequency and low-voltage pulses and performs digital low-pass filtering on the phase current to realize the estimation of the per-unit value of the inductance of each phase, so that the phase current can be estimated by using the The corresponding relationship between the inductance and the rotor position angle is used to obtain the rotor position signal, which provides accurate and reliable position and speed information for the aviation switched reluctance starter / generator. It can adapt to harsh operating environments such as high temperature, high speed and oil pollution, and has extremely high detection accuracy and reliability. The detection system is simple in structure, strong and safe, and low in cost. Position detection of generators at high temperature and high speed.

Description

technical field [0001] The invention relates to a detection method, in particular to a rotor speed / position detection method of an aviation switch reluctance starter / generator, belonging to the technical field of motor signal detection. Background technique [0002] Speed ​​detection is a necessary link to realize the closed-loop control of the speed of the rotating electrical machine. For the control of modern speed-regulating motors such as switched reluctance motors and brushless DC motors, it is not only necessary to detect real-time speed information, but also to detect real-time rotor position information. [0003] For the aviation switched reluctance starter / generator system, real-time and accurate acquisition of rotor speed or position information is a necessary prerequisite to ensure reliable operation and high-performance control of the motor. The position detection of the motor generally detects the rotor position signal by installing a position sensor in the mot...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a detection system that can adapt to harsh operating environments such as high temperature, high speed and oil pollution, has extremely high detection accuracy and reliability, has a simple structure, is strong and safe, and is low in cost, and has a sensitive and efficient detection output response. The rotor speed / position detection method of the aviation switch reluctance starter / generator can be used for the normal position detection of the aviation switch reluctance starter / generator at high temperature and high speed, and solve the problem that the existing sensors cannot adapt to harsh working conditions such as ultra-high temperature, and also It can be applied to the rotor position and speed detection of other rotating electrical machines such as brushless DC motors, etc., which has great industrial application value

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