Power EMC Filter Excellent conduction filtering effect, used to suppress the electromagnetic interference generated by the frequency converter, reduce the coupling interference of the output end of the frequency converter to the outside world, effectively reduce the high frequency harmonics of the IGBT output, solve the problem of frequency converter interference with the motor; Prolong the service life of the motor, inhibit dv/dt, alleviate the damage of the output peak voltage of the inverter to the motor, reduce the RF interference generated by the long cable of the output end of the inverter, and improve the reliability and anti-interference of the equipment. It is specially designed based on the field that the input end interferes with the electric network and the digital equipment such as PLC and DCS system when the inverter is working. Good common mode and differential mode suppression ability, can effectively inhibit the frequency converter, servo drive and other equipment to the outside conducted interference, to ensure the normal operation of peripheral equipment; Standard matches a variety of low-voltage inverters. Input reactors are current limiting devices that are used on the input side of the drive to protect the AC drive from transient overvoltages. It can reduce the surge and peak current, improve the real power factor, suppress the harmonic wave of the power grid, and improve the input current waveform. Input reactor: winding structure, with small DC resistance, strong short-circuit resistance, short time overload ability; The use of high performance F class and above composite insulation materials, so that the product can still maintain reliable performance under harsh working conditions; The reactor design has low magnetic flux density, good linearity, strong overload capacity, and low noise with vacuum pressure impregnation process reactor; The core is made of high quality and low loss cold-rolled oriented silicon steel sheet, which has small reactor loss, high efficiency and low temperature rise. The output reactor is used for smooth filtering, reducing the transient voltage dv/dt, and extending the motor life. Can reduce motor noise, reduce eddy current loss. Reduce leakage current caused by higher harmonic output. Protect the power switching device inside the inverter. The output reactor can reasonably select magnetic materials (silicon steel sheet, ferrite, amorphous iron core, magnetic powder core) according to the frequency of customer use; The foil winding structure with high performance is adopted, which has small DC resistance, strong resistance to electromagnetic force, and strong short-term overload ability. The use of high performance F class and above composite insulation materials, so that the product can still maintain reliable performance under harsh working conditions; The reactor design has low magnetic flux density, good linearity, strong overload capacity, and low noise with vacuum pressure impregnation process reactor. Sine Wave Filter (Passive filter), the sine wave filter is connected between the power supply and the frequency converter, which can limit the current impulse caused by the voltage mutation of the power grid and the operating overvoltage, effectively protect the frequency converter and improve the power factor of the frequency converter, and inhibit the harmonic current input by the frequency converter to the power grid. The input AC reactor limits circuit feedbacks in the form of harmonics. They can also reduce the AC current and its frequency caused by converting the input rectifier in the DC-connected capacitor. Application equipment: Suitable for industrial power supply, inverter power supply, machine tool equipment, frequency conversion equipment, etc. The PWM output signal of the motor is converted into smooth sine wave with low residual ripple voltage to prevent damage to the winding insulation of the motor. The phenomenon of resonance caused by distributed capacitance and distributed inductance due to cable length is reduced. Eliminate motor overvoltage caused by high dv/dt; Eliminate the motor damage caused by eddy current loss; The filter reduces the audible noise of the motor.
