Whether it is a power frequency inverter or a high-frequency inverter, their basic function is to convert DC power into AC power. So what are the differences between the two?
The basic function of an inverter is to convert DC power into AC power.
The power frequency inverter uses a power frequency transformer to boost the voltage. It first inverts DC power into power frequency low-voltage AC power, and then boosts it through a power frequency transformer into 220V5oHz AC power for load use.
The working frequency of the power frequency transformer generally refers to the power frequency of 50Hz or 60Hz, and the signal changes slowly and the waveform is smooth.
The advantages of power frequency are relatively simple structure, stable and reliable operation, strong overload capacity and impact resistance. The disadvantages are that compared with high-frequency machines of the same power, they are heavier, larger, more expensive, and suffer greater losses.
A high-frequency inverter is an inverter circuit that uses a high-frequency transformer to boost voltage. First, low-voltage DC power is inverted into low-voltage AC power through high-frequency conversion technology. After being boosted by a high-frequency transformer, it is then rectified by a high-frequency rectifier and filter circuit into high-voltage DC power, usually above 360V. Finally, 220V AC power is obtained through the inverter circuit. for load use.
The operating frequency of high-frequency transformers is generally above 1KHz, even dozens of KHz or hundreds of KHz, and the signal changes very quickly and suddenly.
The advantages of high-frequency inverters are light weight, small size, low standby power, and relatively high efficiency. The disadvantage is that the circuit is relatively complex, and the load capacity and impact resistance are relatively weak compared to power frequency inverters. However, with the development of technology, the load capacity of high-frequency inverters will also be improved.
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