Automatic modeling and hardware in-the-loop simulation method of contactor

Abstract

The invention provides an automatic modeling and hardware in-the-loop simulation method of a contactor. The three parts of intelligent control, the data collection and the hardware in-the-loop simulation of the contactor are merged; a data collection system can collect various dynamic parameters in the operation process of the contactor; then, the parameters are introduced into a neural network for building a neural network model of the contactor; the real-time displacement of a movable iron core of the contactor can be calculated only through collecting the coil voltage and the coil current; the effects of a permanent magnet can be automatically counted in the neural network training process. A simple and universal training method is provided for the displacement calculation of the contactor; the application of a displacement closed loop control technology is promoted; finally, the displacement closed ring is combined, various intelligent control strategies of the contactor are compiled in a host machine; the control strategies and an ANN model are downloaded into a real-time processor to perform hardware in-the-loop simulation; the effectiveness of the ANN model and the intelligent control strategies is verified; the development of the intelligent contactor is convenient.

Description

technical field [0001] The invention relates to an automatic modeling and hardware-in-the-loop simulation method of a contactor. Background technique [0002] Contactors are mainly used for long-distance frequent switching on and off of the main circuit, and are widely used in various industrial control fields, and their performance indicators directly affect the safety and stability of the entire power consumption system and control system. Traditional electromagnetic contactors have shortcomings such as severe contact bounce, high power consumption, high noise, and narrow operating voltage range, and these shortcomings become more prominent as the capacity of the contactor increases. In recent years, the intelligent control technology of contactors has developed rapidly, which has improved the shortcomings of traditional contactors. The following control schemes are mainly proposed: Documents [1-3] proposed an open-loop control scheme for high-voltage DC starting and low-v...

AI Technical Summary

Problems solved by technology

However, the existing displacement estimation technology needs to solve the magnetic circuit equation of the controlled contactor, and requires more known structural parameters and material characteristic parameters of the contactor, which requires a large amount of calculation and poor versatility. The aggravation of the linear saturation state makes it difficult to guarantee the estimation accuracy, which limits the application of displacement estimation technology

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