1. The reliable performance of power frequency inverter is higher than that of high frequency inverter, which is not easy to be broken.

2. Power frequency inverter with load capacity, especially impact load capacity, is better than high frequency inverter, and can suppress the high harmonic components in the waveform.

3, power frequency inverter structure is relatively simple, overload and short circuit protection than high frequency inverter is easy to make.

High frequency inverter first through high frequency DC/DC conversion technology, the low voltage direct current inverter into high frequency and low voltage alternating current; Then after the high frequency transformer boost, and then through the high frequency rectifier filter circuit rectifier into usually more than 300V high voltage direct current, and finally through the power frequency inverter circuit to get 220V power frequency alternating current for the use of load.

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