Currently, our country is vigorously implementing unattended management in substation operations, making switch power supplies play a significant role. In the power system, DC switch power supplies serve as power sources for relay protection, automatic equipment, control operation circuits, lighting and audio signals, and emergency lighting, making them crucial equipment in power plants and substations. Accidents caused by DC power supply failures occur frequently, hence there is a high demand for reliability and stability in DC power supplies. Traditionally, most DC power supplies use silicon-controlled rectifiers. In recent years, many DC power supply manufacturers have introduced intelligent high-frequency switch power supplies, which offer numerous advantages: safety, reliability, high degree of automation, smaller size and weight, higher overall efficiency, and lower noise, all of which cater to the needs of the power grid and are worthy of promotion and use. Aviation Power Supply
Currently, the power system in our country is gradually transitioning from traditional phase-controlled power sources to modular high-frequency switching power supplies, which are also used for direct current (DC) sources. The working principle of the high-frequency switching power supply rectifier is as follows: the alternating current (AC) power supply is connected to the rectifier module, filtered, and then converted to DC through a three-phase full-wave rectifier. It is then connected to a high-frequency inverter circuit, converting DC to high-frequency AC, which is subsequently output as a stable DC after passing through a high-frequency transformer, rectifier bridge, and filter. This type of high-frequency switching power supply is mainly composed of high-frequency switching charging modules, centralized control systems, and battery packs, among which the charging modules and centralized control systems are equipped with built-in microprocessors, boasting a high degree of intelligence. 36V Aviation Power Supply
The high-frequency switching power supply rectifier module, featuring an integrated microprocessor, serves as the foundation for improving equipment management. It ensures the simplicity of wiring and rapid installation and debugging while striving to be as perfect as possible in responding to fault signals in DC systems. In addition to directly displaying output current and voltage, as well as various operating conditions of the module on the panel, it can also communicate with the automation network of the power system or the DC section of the substation maintenance area through the monitoring module, enabling remote monitoring and operation of the module, achieving the four remote functions. 400HZ Frequency Converter Power Supply
The high-frequency switching power supply rectifier module features an automatic current balancing function under parallel operation. It also includes overcurrent, overvoltage, and instantaneous short-circuit protection, as well as reliable lightning protection measures, capable of effectively withstanding output short-circuit surges. Additionally, multiple effective measures are taken to prevent interference from high-frequency power and harmonics on the AC grid side. 400HZ power supply
