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The role of low voltage reactive power compensation filter reactor
Datetime: 2018-02-09 Visit: 4911
Input and output reactors for variable frequency speed regulation: Inverters and governors are often subjected to shocks from surge currents and surge voltages during use, which can seriously damage the performance and service life of the inverter and governor. An input reactor should be installed in front of it to suppress surge voltage and surge current, protect the inverter and governor, extend its service life and prevent harmonic interference, and at the same time, the frequency converter and governor are used for frequency conversion. The way of speed regulation, so high-order harmonics and waveform distortion are often generated during speed regulation, which will affect the normal use of the equipment. To this end, an output reactor must be installed at the output to filter out harmonics. Voltage and harmonic current, improve the quality of the power grid. The input and output series reactors produced by our factory are made of high-quality imported silicon steel sheets and high-quality copper wires. They are made of advanced technology, with small volume, low temperature rise and no noise. ,
1. The reactor is suitable for the reactive power compensation and harmonic control system. It can improve the power factor and filter the harmonics to suppress the distortion of the grid voltage waveform, thus changing the quality of the power grid and ensuring the safe operation of the power system.
2. The line reactor is used to limit the current surge caused by the sudden change of the grid voltage and the operation overvoltage, smooth the spikes contained in the power supply voltage, or the voltage defects generated during the commutation of the smooth bridge rectifier circuit, which can prevent the voltage from the grid. The interference can reduce the pollution of the grid caused by the harmonic current generated by the rectifier unit.
3. The DC reactor (also known as the smoothing reactor) is mainly used for the DC side of the converter, and the DC current with the AC component flowing through the reactor. The main purpose is to limit the AC component superimposed on the DC current to a certain value, keep the rectified current continuous, reduce the current ripple value, and improve the input power factor.
4. The main function of the output reactor is to compensate the influence of the long-line distributed capacitance, and can suppress the output harmonic current, improve the output high-frequency impedance, effectively suppress dv/dt. Reduce high-frequency leakage current, protect the inverter and reduce Device noise
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