In the decades after the third scientific and technological revolution, the world economy has developed rapidly under the leadership of scientific and technological forces, and many industries have seen the opportunity of the rise. The electrical engineering industry has developed rapidly in this context and gradually in the world. The economic structure occupies an important position. Electrical equipment, whether it is large mechanical equipment or small electrical equipment, is inseparable from the control system. In the traditional electrical engineering industry, most of the mechanical control components are used to control the opening, running, shifting and closing of the equipment. The mechanical control components can only rely on manual manual contact control. Some of the equipments are bulky and cumbersome, relying on manual manual control. Complex and labor intensive, and the control of some devices is dangerous. The modern technology makes the electrical engineering industry continue to develop towards automation and intelligence. As the representative of the intelligent intelligent remote control technology, motor control plays an important role in modern electrical engineering with its characteristics of safety, convenience and high efficiency. effect. 1 Overview of motor control Due to the wide variety of electrical equipment, different specifications and functions, and the application fields are also very extensive, so the control of the motor can not be simply generalized, for different types, uses, fields and operating methods of electrical equipment, To design a motor control system corresponding to it, no matter how the control system is designed, the technical concept of motor control and automation is always compatible. Automation is the main technical core in motor control. The concept of automation is continuously recognized and deepened, which directly affects the control mode of motor control. Affected by the development and influence of computer technology, the core of motor control technology has begun to transform into the field of computer remote control, and has realized the development of intelligence and has been recognized in the industrial field. 1.1 Before adding the computer remote control system, the motor control is mainly controlled by the alternating current control. With the integration of the computer remote control technology, the motor control mode has undergone new changes, and the remote communication technology has become the new dominant in the motor control mode. Remote communication is actually the use of unilateral communication technology between computers and microcontrollers. The control platform takes the computer as the host and remotely controls the motor control device through remote communication with the single chip microcomputer, thereby realizing the motor control mode based on computer communication technology. The remote communication technology has completely changed the control mode of the electrical equipment. Through the control of the computer, not only the remote control of the equipment can be realized, but also the operation of the equipment can be effectively monitored, and the sudden problems can be quickly processed to avoid the space. Restrictions result in untimely processing and safety hazards that can be caused by labor. At the same time, motor control of one person to multiple devices can be realized, saving human resources. 1.2 Embedded technology is also an important technical means in the modern application of motor control. Its application, on the one hand, guarantees the smooth communication of remote communication, on the other hand, because of the compact size advantage of the embedded system, it not only saves the system space of electrical equipment, but also facilitates the implementation and development of remote control operations, and can also The operation of electrical equipment provides greater security. 1.3 Automation As the core of motor control, modern motor control systems are inseparable from the support of electrical automation systems. The electrical automation technology is integrated into the motor control. Through the electrical automation system, the issuance and reception of commands are processed by the control center to complete the operation process of the entire system. The motor control equipment should be designed in consideration of the key elements such as the working environment and working mode of the electrical equipment used in the motor equipment, and designed in a targeted manner so that the motor control equipment can fully meet the functional requirements of the electrical equipment. 2 Common operational skills of motor control In modern industrial production, the application of motor control equipment is the most common. Although the integration of automatic remote control technology makes electrical control more convenient and convenient, the demand for motor control equipment in industrial production is extremely complicated. Therefore, there are high requirements for the technical aspects of the staff. Let us briefly introduce the common techniques of motor control. In addition, since the three-phase electric mode is generally adopted, for the motor control, in the control of the operation of the motor and the control of the speed regulation, corresponding control analysis is required. The control from the motor start is different depending on the different working environment of the motor. With the full voltage direct start mode, the motor can be efficiently started, and the output power is also the largest, which can effectively adapt to the high power working environment. However, this kind of startup method also has certain drawbacks. Because the power demand in the startup process is extremely large, the energy consumption is also extremely high. It should be selected for the necessary engineering operations, otherwise it will lead to waste of energy. Buck start is also a common starting method in motor control, but buck start is not suitable for high-power output environment, because the voltage reduction will affect the efficiency of work to a certain extent. In the engineering phase where the output environment is relatively stable, take The step of step-down startup is conducive to energy saving in operation and operation. In addition to the above two motor start control modes, there is also a start mode that neutralizes the characteristics of direct start and buck start. It is also the most commonly used start mode, which is to increase the start of the electronic rotary resistance. That is to say, the energy-saving of the project can ensure the stable output of the power, and the starting mode is relatively safer and more stable. 2.2 Modern operation technology. In addition, industrial production will have a certain impact on people's living environment, especially in terms of energy consumption. Therefore, in the design of motor control system, more and more ideas of energy saving and environmental protection are integrated into the design. Therefore, in the motor control operation skills, we should also fully consider the requirements of energy conservation, and carry out scientific technical improvement to save energy as much as possible while meeting the needs of production energy. In summary, electrical engineering of electrical engineering is not a simple matter of learning. From the design of the operating system to the choice of methods in operation, the efficiency of the motor may be affected. Therefore, only sufficient research is carried out on the motor. Sufficient analysis of the working environment and work requirements is the design of the motor control system to meet the needs of electrical engineering and energy-saving operations, and the appropriate use of appropriate skills and methods to ensure the efficiency and safety of motor control. At the same time, we must use new scientific and technological strength, constantly improve the operation skills of the motor control system, and let science and technology provide assistance for the development of modern industry. references
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2.1 Operation of the electrical equipment.
The motor equipment is a very important part of the whole motor control system, but it is only a small part of the whole system. Therefore, the operation skill of the motor equipment alone is not equivalent to the motor control technology itself, one of the knowledge points and control techniques. composition. Compared with the traditional method, the basic principle of motor control is the same. The main principle of motor control is the control of current. By changing the motor current, the control of the motor's switching and shifting is realized. Since the current of the motor equipment varies depending on the field of application and the manner in which it is required, alternating current or direct current is generally used.
The operation of the motor equipment is only a small part of the motor control system. In addition to the motor equipment, the computer remote control system, embedded system and electrical automation system are also an important part of the modern motor control system. The application of modern technology is the intelligent feature of the motor control system. Therefore, the deep understanding of the remote control system and the continuous improvement of the knowledge level of the remote automation control technology are also an essential part of the motor operation technology. Based on the understanding of the motor control system and modern control technology, it will also continue to improve with the continuous improvement of the motor control system and the continuous increase in technology content.
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