1. Low power supply voltage. Since the output voltage of the inverter is always equal to the power supply voltage at the rated frequency, if the power supply voltage is low, the output voltage will also be low. The solution is to set the inverter's Automatic Voltage Regulation (AVR) feature to "active." Therefore, when the frequency is below the rated frequency, the inverter has an automatic voltage regulation function. In other words, if the output voltage is low, the inverter will automatically increase its output voltage. Aviation Power Supply
2. Improper torque boost function settings. If U/F is too high, the motor magnetic circuit becomes saturated, leading to excessive excitation current peaks and causing overload. Conversely, if U/F is too low, the current increases as the magnetic field passes through.
Carrier Frequency High. As the carrier frequency increases, the total dead time increases, and the inverter's average output voltage decreases. Therefore, when the electromagnetic noise of the motor is less than the noise of the machine itself, the carrier frequency can be reduced as much as possible. Additionally, an incorrect "current input ratio" setting can also lead to overload misoperation. 400HZ power supply
