The Application of Industrial Optical Fiber in High Voltage Inverter

The pumps load, widely used in metallurgy, chemical, electric power, municipal water supply and mining, etc industries, accounted for about 40% of the entire power system energy consumption, electricity in tap water factory even accounted for 50% of the cost of the water. This is because: on the one hand, the equipment in the design usually with a surplus; On the other hand, due to the change of the working conditions, it need pump output different flow.

In the high voltage inverter, to solve the strength of the electricity isolation in the unit multilevel high-voltage inverter series master control system and unit power, and the electromagnetic interference problems among power units, we put forward the way by using optical fiber connection to realize power drive PWM signal long distance transmission.

In high voltage inverter system, we recognize that the signal in the part of the control unit is mainly the weak current, but the whole system environment worse, the transmission distance is uncertain, various high-voltage electric signals are existed. If we use the pure copper wire to have transmission, we need to face all kinds of interference, the boost, step-down, loss, and easy to corrosion, so as to lead to low reliability and practical applicability, and the waste of resources and so on. Adopting optical fiber is a good solution for all kinds of problems, so optical fiber communication should become the main way for the future communication.

System of signal transmission schemes:

Industrial optical fiber through the way of changing the electrical signals for light signal, solve the variable pressure, loss and interference problems in the copper wire transmission, , its main application is in control cabinet and frequency conversion power unit of communication.