The rated voltage of the thyristor in medium frequency induction heating equipment must be greater than the maximum voltage actually withstood by the component in the circuit. Considering the fluctuation of the power supply voltage and the overvoltage after suppression, the rated voltage of the thyristor must be 2-3 times the maximum voltage actually withstood by the line.
The selection of thyristor components is mainly based on the working conditions of the thyristor rectifier device. Calculate the voltage and current values of the tube, and correctly determine the thyristor model and specification to obtain satisfactory technical and economic effects. In the rectifier device, KP type ordinary thyristors are selected. The calculation of their main specifications, namely rated voltage and current values, has been done in the rectifier circuit. In the future, thyristors can be directly selected by looking up the table.
Calculation of Rated Current of Thyristor for Induction Heating
In order to standardize products, improve the degree of generalization, reduce volume, and reduce wiring, more and more power semiconductor component structures are now adopted. The commonly used ones include two elements in series, four elements forming a single-phase bridge, six elements forming a three-phase bridge, etc. In some high-power occasions, thyristors and their parallel RC, the power stage of the trigger device, pulse transformers, etc. are all mounted on a frame made of engineering plastic to form a power component. The power components form AC cabinets with various capacity outputs.
The main products of induction heating equipment manufacturers include: medium frequency furnace, medium frequency heating furnace, induction through heating furnace, induction heating equipment, medium frequency induction heating furnace, induction heating power supply, forging heating furnace, quenching and tempering equipment, medium frequency induction heating, heat treatment quenching and tempering production line and other heat treatment equipment series.
