IGBT Dual-Unit Energy-Saving Medium-Frequency Power Supply

The new-generation IGBT medium-frequency power supply is a constant-power output device developed on the basis of Infineon’s fifth-generation IGBT modules from Germany. It represents a groundbreaking advancement and is at an internationally leading level.

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Power Supply Series

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Product Description

Device features
- The new-generation IGBT medium-frequency power supply is a constant-power-output power source developed on the basis of Infineon’s fifth-generation IGBT modules from Germany. It represents a groundbreaking advancement and is at an internationally leading level.
- Adding just a small amount of material is sufficient to achieve full-power output, and the output remains consistently stable, significantly improving melting efficiency and reducing power consumption.
- It is particularly advantageous for melting ordinary carbon steel, alloy steel, cast steel, and non-ferrous metals—especially when melting briquettes, iron chips, copper, aluminum, and stainless steel. It boasts significant advantages such as fast melting speed, low power consumption, and minimal harmonic distortion.
- The new-generation IGBT medium-frequency induction furnace features a comprehensive upgrade over the previous model, with modular, unit-based control. It employs individual, real-time temperature control for each module, effectively addressing the previous issue of one faulty module causing a cascade failure. As a result, the furnace operates more stably and requires lower maintenance costs.
Advantageous features
- Low module failure rate: The PCB and assembly structure have been significantly optimized. Meanwhile, the IGBT module is a self-turn-off high-power device with fast switching speed and rapid protection. As a result, the equipment offers reliable protection; it is extremely difficult for the IGBT module to be damaged by furnace penetration, short circuits to ground, grounding issues, or burnout of water-cooled cables. Consequently, its failure rate is far lower than that of thyristor medium-frequency induction furnaces.
- Easy maintenance: Improved upon the original conventional IGBT design, featuring fewer filter capacitors and a modular IGBT assembly. This makes replacement and repair much easier and reduces costs when components are damaged.
- Energy saving: This system eliminates the hollow inductor—used in series thyristor devices to prevent current rise—which incurs significant power losses. It features a short automatic turn-off time, markedly improves the power factor to over 0.98, and achieves an efficiency more than 25% higher than that of conventional parallel-connected thyristor furnaces. Moreover, it outperforms series-connected thyristor furnaces by 10%.
- Up to over 15%; power consumption: IGBT module power consumption—500–550 kWh/ton; thyristor series connection power consumption—550–650 kWh/ton; thyristor parallel connection power consumption—over 700 kWh/ton; harmonics comply with national standards: higher power factor (above 0.98), fewer harmonics, no pollution to the power grid, and full compliance with national standards.