Parallel Type Super Audio Frequency Induction Heating Equipment

Parallel type super audio frequency induction heating equipment-Parallel type IGBT medium frequency super audio induction heating equipment

Scope of application

It is mainly suitable for metal diathermy, hot forging, heat preservation, metal composite brazing, metal workpiece hot loading, metal quenching, annealing, normalizing, tempering and other heat treatment processes.

Second, the technical characteristics

1. Integrated design of rectifier switch cabinet and inverter output cabinet, compact structure and small volume.

2. Selecting the DC chopper method can ensure that the power factor of the grid side is ≥0, 92, and the harmonic content is relatively low.

3. The inverter bridge adopts the power unit superposition method to complete the power synthesis, which is convenient for installation and maintenance. Each IGBT power cell is designed to be 100kW or 200kW.

4. High-standard electromagnetic compatibility design, electromagnetic radiation meets national standards, and airtight case design meets the harsh environment requirements of users on site.

5. The form of the resonance tank circuit is independently designed according to the actual needs of the user, and the on-site layout is convenient and flexible.

6. The three-phase rectifier (DC chopper) is controlled by a cost-effective single-chip microcomputer to achieve precise synchronous triggering, high control precision, and small non-characteristic harmonics on the grid side.

7. The resonant inverter adopts CPLD to form an all-digital control system, with automatic angle fixing, high phase-locking precision and wide phase-locking range.

8. The power supply has perfect protection function, reliable operation and low failure rate.

Equipment configuration

The parallel type IGBT intermediate frequency/super audio frequency induction heating power supply adopts AC-DC-AC variable frequency power supply structure. The rectifier of the power supply adopts three-phase thyristor rectification or diode + IGBT chopping mode. For high-power power supply equipment, 12-pulse rectification can be used to reduce the harmonic current on the grid side; the inverter adopts high-voltage high-power IGBT modules and high-power fast The recovery diode constitutes an inverter power unit, and high power output is achieved through the superposition of the inverter power units; the resonance tank circuit adopts parallel resonance, and pure parallel, voltage doubler or transformer mode can be selected according to different load heating conditions.

The complete set of equipment consists of parallel induction heating power supply, resonant tank circuit, circulating soft water cooling system, operating table (optional), automatic control system (optional) and other parts.

Specifications and models

Power range: 50kW~2000KW.

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