The circuits of the two work differently, and the high-frequency machine circuits are more complex. the frequency machine and the high frequency machine are distinguished according to the operating frequency of the inverter design circuit.

The frequency machine is designed with the traditional principle and consists of a thyristor (SCR) rectifier, anIGBT inverter, a bypass, and an industrial frequency boost isolation transformer. Because its rectifiers and transformers operate at frequencies of 50Hz, as the name suggests, the frequency inverters.

Since the local electricity voltage in Iran is 220V, an off-grid inverter with an output voltage of 220V is selected. According to user statistics, the user’s maximum power is about 676W (0.676KW), taking into account the inductive load in the user’s load. , There is a large inrush current during the start-up process, and at the same time, considering the temporary increase of the load of the system, the inverter power should be relatively large.

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