The industrial power supply can convert other energy sources into electrical energy for production use. It has the characteristics of low power consumption and wide voltage range. The use of industrial power supply can effectively improve the use efficiency of the power supply.
Industrial power is a kind of equipment that converts other forms of energy into electrical energy. It comes from the principle of "magnetism generating electricity". It consists of renewable energy sources such as hydraulic power, wind power, sea tide, dam water pressure difference, solar energy, and coal. Oil residues and other sources of electricity. In general, common power sources are dry batteries (DC power) and household 110V-220V AC power sources.
High-quality industrial power supplies generally have multi-country certification marks such as FCC, UL, and Great Wall of China. These certifications are professional standards formulated by certification bodies for power supplies according to the technical specifications in the industry, including production processes, electromagnetic interference, safety protection, etc. Only after products that meet certain indicators have passed the certification can the certification mark be used on the packaging and product surface. Has a certain authority.
1. Among industrial users, the balanced distribution of load groups is relative, and serious imbalances may occur in the production process. Strong load capacity will be an important challenge for industrial-grade UPS.
2. Industrial UPS power supply is difficult to maintain stable temperature and humidity in the industrial environment, and it is also affected by production and manufacturing. Industrial-grade UPS power supplies need to have strong environmental adaptability and respond to harsh environments with high performance.
3. For the harsh environment, power supply environment, and load environment in industrial applications, high-reliability and high-availability industrial-grade UPS power supply products and solutions can be used to meet the needs of industrial applications.
4. The pan-geographic UPS power supply room monitoring system is composed of three parts: front-end equipment, user/service APP, and large-screen PC. Users can view the running status and related parameters of the UPS equipment in real-time after logging in through the user terminal APP/PC, and can directly watch the running status and related data of the care system on the large screen of the mobile phone. When an abnormality occurs, the alarm information can be received synchronously.
5. The power grid pollution at the industrial application site is relatively serious. It is necessary to completely remove the impact of the instantaneous power grid interruption on the industrial equipment system to prevent the high-frequency interference of the power grid and the damage to the load caused by the overvoltage of the power grid to ensure important industrial processes Steady operation with control.
6. Industrial-grade UPS power supply involves power electronics technology, digital control technology, AC power supply parallel redundancy technology, active harmonic suppression technology, and high-power product manufacturing technology for high-power energy conversion.
Due to the continuous improvement of automation, modern industries use a lot of production process management and control systems. The power supply of these systems can choose to use the same group of UPS systems as precision industrial equipment, or they can choose to use independent UPS systems. Since there is generally no impact load in the production process management system, the load-carrying capacity of the UPS is not high, but the intelligent degree of the UPS power supply (such as remote monitoring and other functions) is relatively high.
Typical power protection solutions for typical industrial UPS power systems include stand-alone systems, parallel systems, and 2N (dual bus) power supply systems. How to choose a suitable UPS power supply scheme depends on the characteristics and importance of the load carried by the system. For equipment that can be scheduled to be interrupted or stopped during operation, the single-machine power supply can be used; for important single-power loads that cannot be interrupted during operation, the parallel power supply is used; for loads that can be connected to two UPS power sources, 2N (double Bus) power supply scheme.
The stand-alone system is the most widely used solution in the energy industry. According to the design of the industrial-grade UPS power supply, the stand-alone operation of the UPS main body can perform system power-off maintenance. The AC load of each point of the stand-alone power supply scheme is independently powered by a UPS. Non-stop maintenance is performed by switching to the manual maintenance bypass and exiting the running UPS power host for non-stop maintenance. The manual maintenance bypass switching can be carried out without interruption of the "make before break" switching process, which will not cause the problem of load interruption of power supply. Realize the uninterrupted switching process between the host and the bypass.
With the application of large-scale control systems in the energy industry, the industrial UPS parallel system has been widely used. This scheme takes into account the maintenance of the UPS host during the long-period operation of the device and has great advantages over the application scheme of the stand-alone system.
During normal operation, all AC loads of the 1+1 parallel operation power supply scheme are equally shared by 2 UPS power supplies, and anyone UPS can work with 100% load for a long time. Therefore, the 1+1 parallel operation power supply scheme can completely withdraw from a UPS host for maintenance. When one of the UPSs needs to be repaired or maintained, disconnect the corresponding switches of the bypass cabinet and the output power distribution cabinet to completely isolate the UPS host equipment to be withdrawn.
The 2N system application is an AC uninterruptible power supply industrial UPS solution that has been applied in recent years. Combined with the characteristic that the load is a dual power supply, the UPS power supply system provides a completely independent two-way UPS power supply for the load. This kind of power supply solution solves the hidden danger of "single point bottleneck" failure between the UPS output and the final load.
Two UPS dual outputs from a dual power supply solution, which is the most typical 2N application solution. Each UPS stand-alone system is a complete stand-alone operation mode, and the maintenance and management are also independent.
1. Note that the total power of the connected electrical appliances must not exceed the rated power of the socket.
2. When using, if the wire is relatively long, try to make the wire unwind and try not to bundle the wire to avoid abnormal overheating.
3. Insert the plug completely during use, on the one hand for the stable operation of the electrical appliance, and on the other hand to prevent the occurrence of contact accidents.
4. Besides, do not put the socket panel in a place where children can reach it. The child's hand is small, and it will be troublesome if it reaches into the socket hole.
5. Prolonged use will cause the power cord to become hot and soft, and in serious cases, it may cause a fire.
1. Appearance: Good products have a smooth appearance, uniform color, clear printing, and the materials used to have a certain hardness and flame retardant requirements. They look textured, but some products have a smooth surface, which seems to be coated with a layer of oil, but the weight Very light, such materials are not flame retardant and will bury fire hazards for electricity.
2. Feel: When you buy the socket, shake it with your hands first, there should be no sound inside, and there is a thick.
3. Real sense: Use the hand to pull the power cord again. The connection between the power cord and the socket should be solid and reliable. If it is a socket with a switch, you need to press it a few times. There should be no jamming and the sound is crisp.
4. Finally, insert the plug into each socket of the socket. The insertion and extraction force of each socket should be even and moderate. Too tight or too loose will affect its normal use.
5. Material: Model-identification of industrial plug: For example, TYP163 is represented as an industrial plug, color is blue, voltage is 220-250V, the current is 16A, the number of poles is 3, the protection level is IP44, and the manufacturer is Hong Antai.
6. Special specifications: (L means conical plug head, N means consistent color). Structure and materials. The socket is the most important part that affects the quality of the socket.
7. The plug sleeve can be seen from the jack. Under normal circumstances, the material will be nickel-plated, the surface is smooth, no copper rust, the thickness is generally between 0.5-0.8mm, pull the copper sheet, feel flexible; if it is possible to open the back cover, then carefully observe the inside of the socket The structure, the internal connection line should be thick, the solder should be uniform, and there should be no virtual soldering.
8. The cross-sectional area of the power cord is also an important factor affecting the quality of the socket and must be consistent with the nominal cross-sectional area. If the cross-sectional area of the power cord is too small.（Line interactive UPS AK series for PC and peripherals）
Switching power supply is a kind of power supply that uses modern power electronics technology to control the time ratio of a switch on and off to maintain a stable output voltage. Switching power supply is generally composed of pulse width modulation (PWM) control IC and MOSFET. With the development and innovation of power electronics technology, switching power supply technology is also constantly innovating. At present, the switching power supply is widely used in almost all electronic devices with the characteristics of small size, lightweight, and high efficiency. It is an indispensable power supply method for the rapid development of today's electronic information industry.
The switching power supply is generally composed of pulse width modulation (PWM) control IC and MOSFET. With the development and innovation of power electronic technology, the current switching power supply is widely used in almost all electronic devices mainly due to its small size, lightweight, and high efficiency, and its importance can be seen.
The switching power supply generally has three working modes: fixed frequency and pulse width mode, fixed frequency and variable pulse width mode, and variable frequency and pulse width mode. The former working mode is mostly used for DC/AC inverter power supply, or DC/DC voltage conversion; the latter two working modes are mostly used for switching regulated power supply.
The output voltage of the switching power supply also has three working modes: direct output voltage mode, average output voltage mode, and amplitude output voltage mode. Similarly, the former working mode is mostly used for DC/AC inverter power supply, or DC/DC voltage conversion; the latter two working modes are mostly used for switching power supply.
Low power consumption and high efficiency. In the switching power supply circuit, under the excitation of the excitation signal, the transistor V works alternately in the on-off and off-on switching state, the conversion speed is very fast, the frequency is generally around 50kHz, in some advanced countries, Can be hundreds of or nearly 1000kHz. This makes the power consumption of the switching transistor V very small, the efficiency of the power supply can be greatly improved, and its efficiency can reach 80%.
Small size and lightweight. It can be seen from the block diagram of the switching power supply that no bulky power frequency transformer is used here. Since the dissipation power on the adjusting tube V is greatly reduced, a larger heat sink is omitted.
Wide voltage range. The output voltage from the switching power supply is adjusted by the duty cycle of the excitation signal, and the change of the input signal voltage can be compensated by frequency modulation or width adjustment. When the power frequency grid voltage changes greatly, it can still guarantee a more stable output voltage. Therefore, the voltage stabilizing range of the switching power supply is wide, and the voltage stabilizing effect is very good.
Besides, there are two methods of changing the duty ratio: pulse width modulation type and frequency modulation type. The switching power supply not only has the advantages of a wide range of voltage regulation but also has many ways to achieve voltage regulation. Designers can flexibly choose various types of switching power supplies according to the requirements of actual applications.
The distributed power architecture is widely used in communication and computing equipment. This power architecture often uses onboard power supply (BMP) modules to perform power conversion as close to the load point as possible. Over the years, developments in devices, circuits, and packaging have made BMP modules more efficient, smaller, lighter, and thinner. All these have led to an increase in power density, which in turn has brought challenges to packaging technology.
Although the open power module design has the advantages of thin thickness and lightweight, it has design deficiencies in thermal performance, strength, and long-term reliability. In fact, despite the high demand for open power modules and the advantages of not requiring heat sinks on the market, there are few fair and objective data on the characteristics of different BMP packages. Therefore, many BMP module users are often confused when choosing the right power module for their specific application. There are four main types of BMP packages that need to be considered: single-board closed, the double board closed, single-board open, and double board open Power supply module.
Factors that affect thermal performance include airflow pattern (layered or turbulent), airflow area distribution, material properties, and geometric configuration, such as circuit board spacing, device spacing, and arrangement, so only a large surface area is not always Means more efficient heat transfer and better thermal performance.