Ac Reactor Technical Characteristics

1. AC Reactors can reduce the interference to other equipment caused by high-order harmonics and waveform distortion generated by the inverter and DC speed regulator during speed regulation, suppress the reverse impact of surge voltage and surge current from the power grid on the inverter and speed regulator, protect the normal operation of the inverter and extend its service life;

2. The reactor can reduce the noise generated by the motor due to harmonics, reduce eddy current loss, improve the power factor of the motor, and reduce the temperature rise caused by the loss of the motor;

3. Protect the damage of the inverter rectifier module and related components caused by the peak capacitive current caused by too low internal resistance (when the power supply capacity is more than 5 times the inverter capacity), and improve the ability of the inverter voltage imbalance (unbalance, 1.8% of the rated voltage);

4. Improve the power factor of the power supply and reduce the content of harmonic current in the inverter power supply;

5. Reduce the waveform distortion rate of current and voltage, improve the quality of power supply, smooth the output voltage and current waveform of the inverter, reduce the impact of transient voltage DV/DT on the motor insulation system, and extend the service life of the motor;

6. The input and output reactors are installed at the input and output ends of the inverter or speed regulator. Its main function is to suppress the 3rd or 5th harmonics from flowing into the power grid, which can reduce the leakage current caused by high and low harmonics and reduce the interference to peripheral equipment; it can limit the abnormal voltage fluctuation and the impact current in the power grid, and suppress the harmonics in the power grid from damaging the inverter.

7. For loads far away from the main distribution line, adding a reactor can extend the effective distance from the motor to the inverter, reduce the capacitive current of the cable, and protect the power switch devices inside the inverter.

8. The reactor has a certain effect on absorbing the useless work of charging capacitive in the cable line and improving the power factor, and can improve the reactive compensation coefficient and quality in the entire line. Improve the voltage distribution on long transmission lines, so that the reactive power in the line can be balanced as much as possible when the load is light, prevent the unreasonable flow of reactive power, and also reduce the power loss on the line.

9. Improve the capacitance effect of sudden unloading of high-power equipment or light-load lines to reduce overvoltage in the power frequency state.

10. Reduce the power frequency steady-state voltage on the high-voltage bus when the large unit is parallel to the system, so as to facilitate the synchronous paralleling of the generator.

11. Prevent the self-excited resonance phenomenon that may occur when the generator carries a long line.

12. When the neutral point of the reactor is grounded through a small reactor, the small reactor can also be used to compensate the phase-to-phase and phase-to-ground capacitance of the line to compensate for the capacitive current flowing through the grounding point and eliminate overvoltage.