400Hz intermediate frequency static variable power supply is a high-frequency, efficient, stable, safe and reliable power equipment, which is widely used in power supply for high-performance equipment such as aircraft, aviation communication equipment and spacecraft. With the rapid development of the aviation field, the demand for 400Hz intermediate frequency static variable power supply and aircraft intermediate frequency static variable power supply will continue to increase, and the power supply industry will continue to develop towards a more efficient, stable and reliable direction.
Applied technologies
AC parallel redundancy technology: Independently developed AC parallel redundancy technology enables two or more inverter power supplies to output in parallel, improving the reliability of the system. When one unit fails, it will not affect the normal power supply of the load. The current sharing technology enables each inverter power supply to bear the load current on average, expanding the battery capacity, reducing operating costs and extending the service life of the battery.
Three-phase independent regulation inverter technology: Three-phase independent regulation inverter technology uses three single-phase bridges to perform conversion separately, and then combines the outputs with a phase difference of 120 degrees. The three single-phase inverters work independently, so the three-phase outputs do not affect each other and can carry unbalanced loads.
Frequency doubling inverter technology: Adopting frequency doubling inverter technology allows high-power IGBTs to work at a lower switching frequency, which can greatly reduce heat generation and improve reliability; at the same time, compared with the same-frequency inverter circuit with the same switching loss, the parameters of its filter are reduced by 4 times, so the volume of its filter is greatly reduced, and the dynamic response speed is faster. Therefore, the load response speed of the frequency doubling inverter technology is faster, the output stability and output accuracy are higher.
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