Medium frequency induction furnace The high frequency equivalent circuit impedance change is not much

by:Hengyang Furnace     2020-10-17
When starting, medium frequency induction heating furnace and concluded that working frequency, because working frequency feedback, no * improve generator regulator output. Basic parameters due to the change, and promote the current value feedback index value is reduced, as well as the high frequency current worth up some instant current value of high frequency machine output * big, lead to destructive current value, only when the working frequency ring overshoot, has just started to reduce the output current value, by load management decisions. Because there are a lot of inductor in the medium frequency induction furnace, system software adjustment reply slowly. As it is concluded that the improvement of working frequency, more damaging current value; Destructive of SCR is big also, speeds up the deterioration of the brake pipe, caused the SCR fatigue breakdown. As electronic embrittlement, basic parameters change simulation process control system and promote the thyristor inverter power supply control circuit to open the advanced Angle of ( 42. 89). , low power factor, 0. 733). , even if the output as the working frequency of high frequency and high frequency current value, but the active power output is not high, medium frequency induction heating furnace heating expected effect is poor. In general, in the process of medium frequency induction furnace, according to the ohm's law, basic parameters change with temperature and load, such as the high frequency equivalent circuit impedance expansion; But when the temperature changes slowly, the high frequency equivalent circuit impedance change is not much. When high frequency draw a smooth working frequency, although with the operation of the heating equipment, due to poor heating expected effect, the high frequency equivalent circuit impedance change is not much, working frequency feedback improve slowly, lead to the high frequency current value changes slowly, namely system * work in large current value condition, also easy to cause deterioration of SCR. Medium frequency induction furnace Low energy consumption, zero pollution, high heating efficiency
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