Reason: If the V/F voltage is increased too much, the inverter output frequency is already relatively high, and the motor speed is still relatively low (that is, the change in motor speed lags behind the change in inverter frequency), it will cause a stall fault, resulting in an inverter overcurrent fault.
The inverter can generate high-power harmonics. Due to the high power, it has strong interference to other equipment in the system. Its interference path is consistent with the general electromagnetic interference path, which is mainly divided into conduction (i.e. circuit coupling), electromagnetic radiation, and inductive coupling.
Several factors influence the inverter frequency, including the design of the power electronics, the configuration of the control circuitry, and the specifications of the utility grid. In grid-tied inverters, for instance, the inverter frequency is typically synchronized with the utility grid to ensure compatibility and seamless energy transfer.
Cause: When multiple inverters start or work at the same time, the grid voltage will drop briefly. When the voltage drop lasts longer than the time allowed by the inverter (generally, the inverter has a minimum allowable voltage drop time), it will cause an undervoltage fault of the inverter.
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Reason: If the V/F voltage is increased too much, the inverter output frequency is already relatively high, and the motor speed is still relatively low (that is, the change in motor speed …
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2. the ac voltage may go high 3. or both will occur Whats supose to happen if the assistants are correctly installed and the PV inverter is correctly setup. then the inverter will …
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