Frequency Conversion Speed Regulation Research Articles

Design of intelligent desktop fan based on MQTT

At present, although the desktop fan has frequency conversion speed regulation, automatic head swing, remote control, etc., it is unable to learn the usage habits, lack of environmental perception, and lack of comprehensive analysis of data feedback, etc. This scheme proposes to design a desktop fan based on MQTT protocol and artificial intelligence principle, users learn from past operations, and predict user needs according to the existing sensor data. Intelligent analysis of the operating environment and status of the fan, timely shutdown or power adjustment, optimize the energy efficiency of the fan, through the deep application of advanced artificial intelligence technology, significantly improve the user experience.

Research on Fuzzy PID Control of Concrete Press Based on Frequency Conversion Speed Regulation System

In the static compression elastic modulus test of concrete, controlling the value of the loading force is the key to the success of the test. The test requires that the set force value be reached quickly, and the fluctuation should be stable within the test standard range, even in the presence of external interference. There is no oscillation in the transient process, and the best adjustment process is achieved. This article uses a variable frequency speed regulation system to control the value of the loading force, but the hydraulic system is susceptible to fluctuations due to the influence of oil pressure and temperature. Conventional PID control cannot meet its performance requirements. As a result, this article proposes a fuzzy PID for the press’s variable frequency speed regulation system. It uses MATLAB/Simulink and the controller to simulate the system. Simulation experiments show that fuzzy PID control has a better control effect than conventional PID control.

Remote Maintenance System of Industrial Ultra-Pure Water Based on Deep Learning

In order to meet the requirements of controlling the water quality of electric power, electronics and other manufacturing industries and reducing energy consumption through remote operation and maintenance system, an intelligent remote operation and maintenance system of ultra-pure water is constructed for ultra-pure water manufacturing in electronic industry. radial basis function neural network and generalized regression neural network are used to fit and predict the effluent quality of ultra-pure water. Through data analysis, the above algorithm is used to realize the accurate prediction of ultra-pure water system and intelligent adaptive control, which improves the accuracy and convergence speed of the algorithm. The results show that on the basis of the simulation of the model, the purpose of improving water production quality, saving energy and reducing consumption can be achieved through backwater utilization and frequency conversion speed regulation.

Research on Optimization of Full Frequency Conversion Intelligent Speed Regulation Algorithm for Bulk Cargo Terminal

In view of the operating conditions of the bulk cargo terminal, a bulk cargo terminal frequency conversion speed regulation control scheme and an intelligent full frequency conversion speed regulation algorithm are put forward, thestudy completes the intelligent speed regulation function of the belt conveyor according to the source material flow. This research solves the problems of low equipment efficiency and high unit energy consumption caused by uneven distribution of material flow and long-term no-load operation of belt conveyors under various operating conditions. Research on the optimization of intelligent speed regulation algorithms provides strong technical support for the construction of green ports and the completion of energy-saving and emission-reduction targets for the water transportation industry.

Study on energy saving of air conditioning frequency conversion and speed regulation in public buildings in hot summer and warm winter areas

In order to meet the comfort and environmental protection and energy saving requirements of residential buildings, This paper puts forward a research method for energy saving of air conditioning in public buildings in hot summer and warm winter areas. According to the characteristics of hot winter and warm winter climate and energy consumption of large shopping malls, it analyzes several energy saving modes of air conditioning in large public buildings, simulates and analyzes the energy consumption of air conditioning in residential buildings under different room temperature conditions, optimizes the algorithm of air conditioning frequency conversion energy consumption in public buildings in hot summer and warm winter areas, and standardizes the evaluation mode of air conditioning frequency conversion energy consumption in public buildings. And put forward relevant optimization suggestions. Finally, the experimental results show that the energy-saving effect of air conditioning frequency conversion speed regulation in public buildings in hot summer and warm winter areas is very obvious, and it is worth popularizing.

Design of control and frequency conversion speed regulation system for mine fan

In order to improve the accuracy and stability of the control system of mine fan, the control and frequency conversion speed regulation system of mine fan was developed based on PLC. Based on the analysis on control technology for mine fan, puts forward the inverter, soft start double mode control strategy, combined with the design of PLC control system hardware circuit and software program, the realization of mine fan starting and soft start, reasonable speed regulating, stop running process control, at the same time have the parameters such as voltage, current detection and fault protection function.

Analysis on the Common-mode Voltage and its Effects of a Marine SPWM Frequency Conversion Speed Regulation System

The AC frequency conversion speed regulation technology has been used widely in the ship field for its excellent operating and control characteristics, whereas it can also bring out negative effects such as the common-code voltage on the drive system. The analysis is made on the common-mode voltage of the SPWM frequency conversion speed regulation system, including its generation mechanism, spectrum features, negative effects and suppression methods, which provides beneficial reference and enlightenment for the improvement of the SPWM frequency converter technical performance as well as the equipment maintenance and management.

Application of Variable Frequency Speed Regulation Technology in Fan System

With regard to the problem in fan air volume control, the research on air volume method was carried out, and the air volume control method for frequency conversion speed regulation was adopted. In this regard, a motor variable frequency speed regulation system was designed, and a variable frequency control software was developed. In order to verify the control effect of the system on the fan air volume, a measurement experiment on the fan speed was carried out, and it was concluded that the variable frequency speed regulation method was highly precised, and had a sound linearity. While finally, this variable frequency speed regulation system was applied in the fan system, and the equal thickness collection experiment on the material was carried out in order to ensure the strict control over the air volume, which has obtained a relatively sound application effect.

Research on Design Method of Computer Control System for Frequency Conversion Speed Regulation Based on Cloud Technology

With the development of power electronics technology, frequency converter as the controller of AC motor has been more and more widely used. With the continuous development and application of frequency converters, more and more occasions need to be remote controlled through the network. With the input system of computer, the process parameters can be easily changed. Intelligent control has become the feature and symbol of the new generation of control products, so intelligent control is bound to become a research hotspot in the field of control. Whether it is civilian or military, the variable frequency speed control synchronous control system has occupied a dominant position. Therefore, it is the current development trend to use a computer to control the inverter through communication. In order to meet the requirements of the production process, it is necessary to carry out technical transformation of the original system with new technology. This paper mainly describes the application of frequency conversion and automation technology in this system. The characteristic of the power supply voltage regulation synchronization system is that each unit is powered by its own power source. This method has better adaptability and a wider range of speed regulation.

Study and Application of Intelligent Control Technology in Local Fan of Coal Mine

Local ventilator is an important equipment in the process of underground coal mine excavation, and its reliability and efficiency directly affect the safety of gas emission. Because of the characteristics of large lag, non-linearity and multi-disturbance of local fan control system, the traditional PID control method can not achieve the desired control effect, so an intelligent control technology, i.e. fuzzy control, is put forward and applied to the local fan control system, and the fuzzy control algorithm is improved. The improved fuzzy controller can pass through the local part according to the gas concentration in the heading face. The speed of fan is adjusted in real time to ensure the safety of underground working environment, and the fuzzy control of gas concentration and frequency conversion speed regulation of local fan is realized. The fuzzy control not only improves the ventilation control performance and automation level, but also has remarkable energy-saving effect and better control performance.

Design of Cooling Water Scheme of Gas Compressing Station in West-to-East Gas Pipeline

This document focuses on motors and frequency conversion equipments of stations of West-to-East Gas Pipeline, and introduces the present main cooling ways. Against water consumption, power consumption, and other economical index, analyze the selection process of cooling scheme in engineering design. Compare with the cost, workload of operation and maintenance of water cooling, air cooling and motor cooling. The result shows that water cooling is practicable in West-to-East Gas Pipeline and has validated in the established engineering. The method of scheme comparison proposed by this paper provides a reference for subsequent design.With the development of electronics technology, medium voltage high power frequency conversion speed regulation technology is increasingly mature. The technology that frequency conversion motor drives compressor unit has been gradually used in the long distance pipeline pressure field of oil and gas under the condition of reliable power supply, to replace the traditional gas turbine, and becomes the first choice of the pressurization equipment of the long distance pipeline, because of advantages of high technology, high efficiency, energy conservation and environment protection, economic benefits and so on[1-3].Stations of West-to-East Gas Pipeline are usually electrical driven. When the compressors operate, motors and frequency converters will produce large amounts of heat, which affects running state and equipment life. So choosing the economic and technological cooling water scheme is important for stations and the whole network to operate safely and stably[4-6].

The research of power saving frequency conversion speed regulation experiment system

A power saving frequency difference controlling method was introduced by the double inverter and motor experiment system. The characters of the system under different loads were investigated. The theoretical analysis and experiment results show the frequency difference method is a ideal power saving speed regulation method for the double inverter and motor system. The experiment system is simply structured, convenient to operate and provides a new way of character testing for frequency conversion speed regulation.