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Fuzzy PI control-based aviation generator voltage regulation method

A generator, fuzzy technology, applied in the direction of controlling generators, controlling generators through magnetic field changes, control systems, etc., can solve the problems of large dynamic adjustment time gap, achieve dynamic performance improvement, ensure dynamic and steady state characteristics, guarantee Effects of Steady State Accuracy

Inactive Publication Date: 2018-09-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The dynamic adjustment time difference between loading and unloading may be relatively large

Method used

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  • Fuzzy PI control-based aviation generator voltage regulation method
  • Fuzzy PI control-based aviation generator voltage regulation method
  • Fuzzy PI control-based aviation generator voltage regulation method

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0034] The invention discloses an aero-generator voltage regulation method based on fuzzy PI control. Based on the problems existing in the double-loop voltage regulation control method, the invention adopts such as figure 2 The fuzzy PID controller shown as well as image 3 The shown circuit block diagram of the double-loop control structure voltage regulation system based on fuzzy PI control includes the following steps:

[0035] Step A.1), calculate the adjustment point feedback voltage U port with reference voltage U ref The deviation e and the differential e of the deviation n , according to the deviation e and the differential e of the deviation n The proportional parameter P and the integral parameter I of the voltage loop are obtained by the fuzzy PI controller, and the feedback voltage U of the adjustment point is port with reference...

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Abstract

The invention discloses a fuzzy PI control-based aviation generator voltage regulation method. In a voltage regulation process, deviation between an adjustment point feedback voltage and a reference voltage is detected, and deviation differential is solved; a fuzzy rule table is divided into four regions according to the deviation and the deviation differential; and four processes of increasing and decreasing the adjustment point voltage are performed corresponding to loading and de-loading conditions of the four regions respectively; and different parameters are set for the four regions to set PI parameters in the loading and de-loading conditions separately. By virtue of the method, the shortcoming that voltage adjustment parameters cannot be set separately in different load change conditions in the original method is overcome.

Description

technical field [0001] The invention discloses a generator voltage regulation method based on fuzzy PID, and belongs to the technical field of digital voltage regulation of aviation generators. Background technique [0002] The aviation generator voltage regulator stabilizes the voltage at the voltage regulation point at a fixed value by adjusting the excitation current of the generator. In the case of changes in the speed of the prime mover or changes in the onboard load, the voltage at the voltage regulation point may be unstable. At this time, the voltage regulation regulator adjusts the output voltage to be constant through the voltage closed loop. [0003] With the development of more electric aircraft, the speed of the engine changes greatly, and the load changes greatly, especially the pulse load. However, the dynamic adjustment time in the aviation power supply system is required to be less than 50ms, which increases the control requirements for the voltage regulator...

Claims

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Application Information

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IPC IPC(8): H02P9/38
CPCH02P9/38H02P2101/30
Inventor 张恩徐王慧贞王永杰陈强姜浩宇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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