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What is the medium frequency power supply of KGPS thyristor

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Update time : 2017-07-04 15:57:00
The past name of thyristor medium frequency power supply is SCR medium frequency power supply (SCR for short). KG means thyristor, P means frequency conversion, S means water cooling.

The thyristor medium frequency power supply began to gradually replace the original mechanical medium frequency generator in the 1980s. The advantages are as follows:
1. Energy saving, its frequency conversion efficiency can reach 90%, while the medium frequency generator frequency conversion efficiency is only 70% -80%.
2. It is static frequency conversion, no vibration, small size and light weight.
3. It is convenient to start and stop, the mechanical medium frequency generator starts slowly, and it needs to wait for a certain interval period before starting again.
4. The device has high rated capacity and small load, and the device efficiency is still very high. The frequency range of the thyristor power supply is similar to the mechanical medium frequency generator, and it can reach thousands of kilowatts in the 0.5-10kHz power range.
The electric furnace of thyristor medium frequency power supply has two types: parallel resonance and series resonance. At present, parallel circuits are mainly used.
FOCO inductiond's thyristor medium frequency power supply is powered by a three-phase 380V power supply, which is converted into a DC to an inverter part through a three-phase bridge-type fully controlled rectifier circuit, and then into an medium frequency into a resonant circuit, and finally to the load. In hardening applications, the load is usually harden Transformers, sensors and workpieces.
The power of thyristor MF is 750V.
Thyristor is mainly used for high-power induction heating power supply. Such as medium frequency induction melting furnace, medium frequency induction heating machine.

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