All-solid state same-frequency and same-phase output variable-frequency double power source

Abstract

The invention relates to an all-solid state same-frequency and same-phase output variable-frequency double power source. The all-solid state same-frequency and same-phase output variable-frequency double power source is characterized by comprising two sets of all-solid state same-frequency and same-phase output variable-frequency power sources, an induction heating furnace induction ring, an induction furnace variable-frequency current signal transformer and an induction furnace variable-frequency voltage signal transformer, wherein each set of all-solid state same-frequency and same-phase output variable-frequency power source comprises a thyristor full-bridge rectifying part, a direct current reactor, an IGBT (insulated gate bipolar transistor) inverter, a rectifying circuit trigger, a protecting signal generator, an inverting circuit driving trigger and an auxiliary direct current power source. The all-solid state same-frequency and same-phase output variable-frequency double power source has the advantages that the two sets of IGBT inverters are simultaneously driven to work by one set of induction furnace variable-frequency current signals and variable-frequency voltage signals, and the two sets of variable-frequency power sources are used for outputting the output voltage to work at same phase and same frequency; the power is singly supplied to an upper die induction heating furnace and a lower die induction heating furnace which are overlapped up and down, so as to respectively adjust power; the mutual magnetic field interference of the loads of the overlapped upper induction furnace and lower induction furnace is eliminated; the requirement of production technology is met.

Description

technical field [0001] The invention relates to a 100KW-10000KW isothermal forging upper and lower mold induction heating all-solid-state same-frequency and same-phase output frequency conversion dual power supply, which belongs to the technical field of isothermal forging equipment. Background technique [0002] Isothermal forging (Isothermal-forging), as a branch of superplastic forming, is an emerging forging technology. It is widely used in the manufacture of structural parts such as spacecraft and aircraft turbine engines in the aerospace industry and key parts in the national defense industry. It can make the forgings meet the shape requirements close to the parts, reduce material consumption, and reduce processing cycle and cost. This process combines heat treatment Isothermal forgings with optimized comprehensive mechanical properties can be obtained. [0003] When the parts are heated, they are kept at the same temperature as the mold until the end of forging. This...

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a 100KW-10000KW isothermal forging upper and lower mold induction heating all-solid-state same-frequency and same-phase output frequency conversion dual power supply, in order to solve the problem of electromagnetic interference between the upper and lower stacked induction furnaces

Images