Application of Shenzhen reactor in frequency converter:
With the rapid development of power electronics technology, AC frequency control has become the mainstream of electric drive since the 1990s, and its application range is increasingly wide. However, since the inverter is used in various electrical environments, if the proper protection measures are not taken, the stability and reliability of the inverter operation will be affected. Practice has proved that the proper selection of distribution transformers and inverters can effectively prevent the impact of overvoltage and surge current generated by operating the AC inlet switch, and also reduce the harmonics generated by the inverter to the grid. Pollution and increase the power factor of the inverter.
There are three types of reactors for use with the inverter:
1. Shenzhen reactor reactor line reactor
Also known as input reactor or power coordinating reactor, it can limit the voltage surge caused by sudden change of grid voltage and operation overvoltage, effectively protect the inverter; it can prevent interference from the grid and reduce the harmonic generated by the rectifier unit. The current of the wave current on the grid improves its power factor.
2. DC reactor of Shenzhen reactor
The DC reactor is connected between the DC rectification link and the inverter link of the inverter system. The DC reactor can make the inverter link run more stably and improve the power factor of the inverter. In the frequency conversion system with DC link, the DC reactor can be connected to the rectifier to effectively improve the power factor. When properly matched, the power factor can be increased to 0.95. In addition, the DC reactor can stabilize the inverter and limit it. Short circuit current.
3. Shenzhen reactor output reactor
Output reactor, when the cable length from the output end of the inverter to the motor is greater than the specified value of the product, an output reactor should be added to compensate the charge and discharge of the coupling capacitor when the long cable runs, to avoid overcurrent of the inverter, and to suppress the inverter. The harmonics of the output of the device play a role in reducing the noise of the inverter. Some manufacturers also provide the basic length allowed for the wires connected to the motor when there are output reactors and no output reactors.
Shenzhen Haike Transformer Co., Ltd. is a professional manufacturer integrating scientific research, design, manufacture and sales of dry-type transformers, reactors, voltage regulators and special transformers. It has complete production and processing equipment and perfect testing and testing methods.