Chargers are divided according to the working frequency of the design circuit, which can be divided into power frequency machines and high frequency machines. The power frequency machines are designed based on the traditional analog circuit principle, and the internal power devices of the machine (such as transformers, inductors, capacitors, etc.) ) Are relatively large, and generally there is less noise when running with a large load, but this model has strong resistance to harsh power grid environmental conditions, and its reliability and stability are stronger than high-frequency machines.
The high-frequency machine uses a microprocessor (CPU chip) as the processing control center. It burns complicated hardware analog circuits into the microprocessor and uses software programs to control the operation of the UPS. Therefore, the size is greatly reduced, The weight is greatly reduced, the manufacturing cost is low, and the price is relatively low. The inverter frequency of the high-frequency machine is generally above 20KHZ. However, the high-frequency machine has poor tolerance under the harsh power grid and environmental conditions, and is more suitable for the power grid to be more stable and dusty Low, suitable temperature/humidity environment.
In terms of comparison between high-frequency machines and industrial frequency machines: small size, light weight, high operating efficiency (low operating cost), low noise, suitable for office spaces, high cost performance (under the same power, low price), and impact on space and environment small.
