Inverter Under Voltage Fault
Frequent undervoltage faults during operation are mostly caused by insufficient capacity, capacity reduction or loss of capacity of the capacitor in the DC circuit.
Inverters operate within a specific voltage range. Overvoltage or undervoltage can damage the inverter or connected devices. Overvoltage: Voltage spikes in the electrical system or from inductive loads can cause overvoltage. Use surge protectors and consider installing a voltage regulator to stabilize voltage.
1. Power supply phase loss Cause: When the inverter power supply phase is lost, the three-phase rectification becomes two-phase rectification. After the load is applied, the DC voltage after rectification is low, causing undervoltage failure.
In this article we look at the 3 most common faults on inverters and how to fix them: 1. Overvoltage and Undervoltage Overvoltage This is caused by a high intermediate circuit DC voltage. This can arise from high inertia loads decelerating too quickly, the motor turns into a generator and increases the inverter's DC voltage.
1. Overvoltage and Undervoltage Overvoltage This is caused by a high intermediate circuit DC voltage. This can arise from high inertia loads decelerating too quickly, the motor turns into a generator and increases the inverter's DC voltage. There are other causes of DC overvoltage, however. POSSIBLE FIXES: Turn the overvoltage controller is on.
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