4 FAQs about The voltage of the front stage of the inverter keeps rising

What causes a DC inverter to overvoltage?

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. Check supply voltage for constant or transient high voltage. Increase deceleration time.

What are the most common faults on inverters?

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.

What if the frequency inverter voltage is too high?

When the system voltage is too high, the frequency inverter may not be able to stop at a numerical point in order to avoid triggering the DC bus over-voltage protection for its own protection. In such cases, it is recommended to connect the transformer taps to 105%.

Why is my inverter screen not working?

Reason 3: The DC input voltage is too low. When the string output voltage is lower than the minimum input voltage of the inverter, there is no display on the inverter screen. To make sure, you can use a multimeter to measure the output voltage of the photovoltaic string to see whether the voltage reaches the minimum input voltage of the inverter.

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