Power supply is an important part of all electrical appliances. In the electronic equipment industry, people compare the power supply module to the “heart†of electronic equipment and electronic systems, and the power supply is also the largest link in the electrical system.
In recent years, power supply analysis has become increasingly complicated. The variety and number of components have increased rapidly. The use environment has also become harsh and diversified. The electronic systems being served are becoming more and more important and expensive, especially for military equipment, especially for aviation. The requirements for components and system reliability in aerospace are even higher.
The task of the power supply in the electrical system is to provide electrical energy for various circuits in the electrical system. Because the types of circuits have different functions, the power supply can be divided into different types based on the supply methods: UPS power supply, EPS power supply, and power supply , Frequency conversion power supply, purification power supply, special power supply, generator set, switching power supply (AC/DC), inverter power supply (DC/AC), module power supply (DC/DC) and other power supplies.
What are the thermal imager applications in the power supply?
The temperature control of the power supply is an important way to improve the reliability and service life of the power supply module and system. In the design and application of power supply, choosing the right components, that is to reduce the circuit loss, improve the module conversion efficiency, and select a reasonable cooling method is the key technology to ensure the reliable and stable operation of the power supply. Combining the two organically, it will make the power supply have It has the advantages of stronger environmental adaptability, long life, low cost, and easy maintenance.
The thermal imager can provide clear images of the temperature distribution of the power supply circuit and its entire power supply system and accurate temperature measurements. 1) Electronic components The power supply is an electrical energy conversion device that consumes some of its own power during the conversion process. Electricity is converted to heat release. The stability of electronic components and the speed of aging are closely related to the ambient temperature. Whenever the ambient temperature rises by 10°C, the life of the main power components is reduced by 50%, which requires that the electronic components should operate in a relatively stable and relatively low temperature range.
The thermal imager can provide a heat map of the thermal conditions at work for each component in the engineer's circuit. It helps engineers analyze the effects of components on the temperature of the entire power supply circuit, and can also help engineers select the appropriate load capacity conversion module.
2) Transformer transformer is the main component of the power supply, its heating temperature is limited, the current domestic 3C certification limits the transformer temperature to 120 °C, the European UL certification limits the transformer temperature to 115 °C. The main source of heat for the power supply is also the transformer, and the main reasons for the temperature rise of the core loss and copper loss transformer work. In addition, as the operating temperature of the transformer increases, the load of the iron core will inevitably be weakened, and the coils will be aged. When the insulation performance of the transformer is reduced, the impact resistance of the mains electricity will be weakened. At this time, if there is a lightning strike or a surge in the commercial power supply, the high back pressure in the transformer's primary will breakdown the transformer and cause the power supply to fail. In addition, there will be high-voltage series in the main equipment, causing damage to the main equipment.
The thermal imager can provide accurate transformer temperature through quick and easy operation.
3) Thermal distribution of the circuit The components of the same circuit board should be arranged as much as possible according to the amount of heat generated and the degree of heat dissipation. A reasonable arrangement of the devices can effectively reduce the temperature rise of the printed circuit, thereby enabling the devices and devices. The failure rate has dropped significantly.
The thermal imager can help engineers analyze the temperature distribution of the entire circuit board through the provided infrared heat map, and improve the design and application of engineers.
4) Power supply cooling Power supply cooling technology is a basic means to meet various technical performance requirements of the industry. At present, the common cooling methods for each power module include natural cooling, pure fan cooling, natural cooling, and fan cooling.
There is a large transformer in the power supply product, and some large capacitors. These are large heat sources. These heat sources may affect the stability and service life of some other circuits and their components inside your product. . With the use of an infrared thermal imager, it is possible to measure the heat generation and heat dissipation in three situations very directly. Engineers improve the design, use reasonable cooling measures in practical applications, improve the reliability of the power supply, and reduce the failure rate of the equipment.
5) Process Improvement When the power supply equipment is processed, it is easy to find technical problems at the joints and pressure lines. The use of the thermal imager can easily, intuitively and safely find fault points, and help production personnel and quality inspection personnel to better find and Solve problems and improve product quality.
Thermal imager in the power company's application department, in addition to R & D department, also mainly include: quality control department, after-sales service department and equipment maintenance and other departments.
Unique Applications of Infrared Thermal Imagers 1. Existing Temperature Analysis Tools For the R&D and application of power supplies, due to their specificity, many engineers complain that existing tools cannot support them in performing a detailed and comprehensive temperature field depiction. Inconvenient operation, and may change the original temperature field distribution, such as: In the current power supply development and application, the temperature analysis tool is a data collector, but the use of data collector may encounter the following problems: circuit board power off, patch There are not enough thermocouples, the operation is inconvenient, the reaction time is slow (30 seconds to 1 minute), and the use of a data collector will also change the thermal conditions of the devices under test. At the same time, the temperature field distribution and thermal analysis of the entire power supply cannot be analyzed.
2. Thermal Imager Temperature Analysis Advantages Compared to infrared imager, data collector and infrared point thermometer, infrared imager has its own advantages:
a) When the target circuit is detected by an infrared thermal imager, there is no need to power off, and the operation is convenient. At the same time, the non-contact measurement makes the original temperature field undisturbed.
b) The reaction speed is faster, less than 1 millisecond;
c) With the help of the supporting infrared analysis software, the user can perform detailed and comprehensive analysis of the obtained power supply temperature data at the site without generating a complete temperature report.
This article summarizes the thermal imager in the power industry can play its superiority, because it has unique advantages, can supplement the lack of traditional detection methods. However, there is still a lot of work that needs further improvement and improvement in the future practice, making the application of infrared thermal imaging technology in the power supply industry more extensive and scientific, effectively improving the quality of power supply products, improving the power conversion efficiency, and improving the system performance level.
In recent years, power supply analysis has become increasingly complicated. The variety and number of components have increased rapidly. The use environment has also become harsh and diversified. The electronic systems being served are becoming more and more important and expensive, especially for military equipment, especially for aviation. The requirements for components and system reliability in aerospace are even higher.
The task of the power supply in the electrical system is to provide electrical energy for various circuits in the electrical system. Because the types of circuits have different functions, the power supply can be divided into different types based on the supply methods: UPS power supply, EPS power supply, and power supply , Frequency conversion power supply, purification power supply, special power supply, generator set, switching power supply (AC/DC), inverter power supply (DC/AC), module power supply (DC/DC) and other power supplies.
What are the thermal imager applications in the power supply?
The temperature control of the power supply is an important way to improve the reliability and service life of the power supply module and system. In the design and application of power supply, choosing the right components, that is to reduce the circuit loss, improve the module conversion efficiency, and select a reasonable cooling method is the key technology to ensure the reliable and stable operation of the power supply. Combining the two organically, it will make the power supply have It has the advantages of stronger environmental adaptability, long life, low cost, and easy maintenance.
The thermal imager can provide a heat map of the thermal conditions at work for each component in the engineer's circuit. It helps engineers analyze the effects of components on the temperature of the entire power supply circuit, and can also help engineers select the appropriate load capacity conversion module.
The thermal imager can provide accurate transformer temperature through quick and easy operation.
The thermal imager can help engineers analyze the temperature distribution of the entire circuit board through the provided infrared heat map, and improve the design and application of engineers.
4) Power supply cooling Power supply cooling technology is a basic means to meet various technical performance requirements of the industry. At present, the common cooling methods for each power module include natural cooling, pure fan cooling, natural cooling, and fan cooling.
There is a large transformer in the power supply product, and some large capacitors. These are large heat sources. These heat sources may affect the stability and service life of some other circuits and their components inside your product. . With the use of an infrared thermal imager, it is possible to measure the heat generation and heat dissipation in three situations very directly. Engineers improve the design, use reasonable cooling measures in practical applications, improve the reliability of the power supply, and reduce the failure rate of the equipment.
Thermal imager in the power company's application department, in addition to R & D department, also mainly include: quality control department, after-sales service department and equipment maintenance and other departments.
Unique Applications of Infrared Thermal Imagers 1. Existing Temperature Analysis Tools For the R&D and application of power supplies, due to their specificity, many engineers complain that existing tools cannot support them in performing a detailed and comprehensive temperature field depiction. Inconvenient operation, and may change the original temperature field distribution, such as: In the current power supply development and application, the temperature analysis tool is a data collector, but the use of data collector may encounter the following problems: circuit board power off, patch There are not enough thermocouples, the operation is inconvenient, the reaction time is slow (30 seconds to 1 minute), and the use of a data collector will also change the thermal conditions of the devices under test. At the same time, the temperature field distribution and thermal analysis of the entire power supply cannot be analyzed.
2. Thermal Imager Temperature Analysis Advantages Compared to infrared imager, data collector and infrared point thermometer, infrared imager has its own advantages:
a) When the target circuit is detected by an infrared thermal imager, there is no need to power off, and the operation is convenient. At the same time, the non-contact measurement makes the original temperature field undisturbed.
b) The reaction speed is faster, less than 1 millisecond;
c) With the help of the supporting infrared analysis software, the user can perform detailed and comprehensive analysis of the obtained power supply temperature data at the site without generating a complete temperature report.
This article summarizes the thermal imager in the power industry can play its superiority, because it has unique advantages, can supplement the lack of traditional detection methods. However, there is still a lot of work that needs further improvement and improvement in the future practice, making the application of infrared thermal imaging technology in the power supply industry more extensive and scientific, effectively improving the quality of power supply products, improving the power conversion efficiency, and improving the system performance level.
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