The function of low voltage reactive power compensation filter reactor

Input and output reactor for frequency conversion and speed regulation: during the use of frequency converter and governor, they are often impacted by surge current and surge voltage, which will seriously damage the performance and service life of the converter and governor. Therefore, input reactor shall be installed in front of it to suppress surge voltage and surge current, protect frequency converter and governor, extend its service life and prevent it The harmonic interference is stopped. At the same time, because the frequency converter and governor are regulated by frequency conversion, high harmonic and waveform distortion will be generated during the speed regulation, which will affect the normal use of the equipment. Therefore, an output reactor must be installed at the output end to filter out harmonic voltage and harmonic current, improve the quality of power grid, and the input and output series reactance produced by our factory The device is made of imported silicon steel sheet and high-quality copper wire by advanced technology, which has the characteristics of small volume, low temperature rise and no noise,

1. Reactor is suitable for the treatment system of reactive power compensation and harmonic wave, which can improve the power factor and filter the harmonic, so as to restrain the distortion of the voltage waveform of the power grid, thus changing the quality of the power grid and ensuring the safe operation of the power system.

2. The incoming reactor is used to limit the current shock caused by the voltage mutation and operation overvoltage of the power grid, smooth the peak pulse contained in the power supply voltage, or the voltage defect caused by the commutation of the smooth bridge rectifier circuit. It can not only prevent the interference from the grid, but also reduce the harmonic current pollution caused by the rectifier unit.

3. DC reactor (also known as flat wave reactor) is mainly used in the DC side of converter. The DC current with AC component flows through the reactor. The main purpose is to limit the AC component superimposed on the DC current to a certain specified value, keep the rectifier current continuous, reduce the current fluctuation value and improve the input power factor

4. The main function of output reactor is to compensate the influence of long-line distributed capacitance, and can suppress the output harmonic current, improve the output high frequency impedance, effectively inhibit dv/dt. reduce the high frequency leakage current, protect the frequency converter and reduce the noise of equipment