0.75 Ton induction smelting electric Furnace
IGBT power control part of the intermediate frequency furnace principles and advantages:
(1) IGBT frequency power supply is used in series-resonant medium-frequency induction melting furnace, which device is IGBT inverter module as a whole has a melting fast, energy-saving, low failure rate and so on.
(2) IGBT frequency power supply due to the use of series resonant inverter part, and the inverter voltage is high, so the SCR IGBT IF frequency energy than the average; IGBT transfer power FM frequency used, inductive and capacitive filtering, has been working on 500V, so IGBT IF the high harmonic generation is small, the grid generated pollution.
(3) energy-efficient IGBT power than traditional silicon transistor IF frequency power supply can be 15% -25% energy saving, energy saving under the main reasons are the following aspects:
A, high voltage inverter, current, circuit loss, this part of the energy savings of 15%, energy-efficient IGBT inverter power supply voltage of transistor frequency 3000V, while the traditional SCR frequency power inverter voltage is only 750V, current small nearly four times, the line loss greatly reduced.
B, high power factor, power factor is always greater than 0.95, reactive power loss, this part of the SCR frequency power saving than 3% -5%. As the energy-frequency power supply using IGBT transistor half-bridge series resonant inverter circuit, rectifier thyristor conduction angle is not adjusted, so the whole work process is always greater than 0.98 power factor, no power loss.
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