4000KW-6000KW-12 pulse-IGBT and thyristor power supply

IPM Profile

Ningbo Haitian Electric Furnace was established in 1992 and has been committed to the production and research and development of intermediate frequency smelting furnaces. In 1999, it launched a single board constant power controlled thyristor parallel inverter intermediate frequency power supply, which saves 6% energy compared to traditional smelting furnaces. In 2003, it launched a thyristor series inverter intermediate frequency power supply, which saves 7% energy compared to parallel connection. In 2009, it collaborated with the Huanhu Electric Furnace (Dai Guangzu team) to launch an IGBT power supply, which further improves the energy-saving effect and saves 6% energy compared to thyristor power supply, In 2019, a new dual DSP controlled IPM power supply was launched, which does not require reactors and saves 10% -20% energy compared to previous thyristor power supplies. The IPM output power covers 5KW-6300KW. This series of power supplies has been successfully applied to 10KG-12T intermediate frequency electric furnaces.

Haitian electric furnace IPM module power supply has the following features:

1. Stable and reliable high-power IPM intermediate frequency power supply

1. The building block design solves the problem that the power of IGBT power supply is not a big problem in the past. The power can cover 5KW-6300KW and higher, and the power can be expanded infinitely , breaking through the technical bottleneck that the IGBT power is unstable in the past.

2. The Haitian IPM intermediate frequency melting system adopts MATLAB software simulation design to ensure that the whole set of equipment has the highest efficiency, the best reliability and stability sex.

3, N+1 redundancy theoretical design, each redundant module of the equipment, the reliability is improved by an order of magnitude, each module unit is independent During operation, the current is intelligently distributed according to the output power, any module will automatically exit when it fails, and the rest of the units will automatically redistribute the current, which truly solves the previous problems that IGBTs are easy to damage, difficult to maintain, laborious and time-consuming.

4. Multi-layer busbar design, the multi-layer busbar is designed through MATLAB software simulation, which cleverly solves the problem of busbar heat dissipation and solves the problem of heat dissipation. Distributed inductance influence, solve the influence of heat dissipation and peak voltage on IPM, make IPM more reliable, stable and not easy to be damaged, and solve the problem of frequent damage of IGBT in the past.

2. Environmental protection and energy saving

1. Haitian IPM intermediate frequency power supply adopts advanced microcomputer full digital fuzzy control, eliminating the need for reactors More energy-efficient than previous IGBT power supplies.

2. The IPM module is a device that can be turned off, and there is no reactive current during the inverter, so the inverter loss is lower than that of the thyristor. , the protection is more reliable, fast and not easy to damage.

3. Air-core inductors are not needed in the inverter circuit of the IPM module, which reduces energy loss. The above three points can save about 7% of electricity compared with the previous thyristor power supply.

4. The power factor of the coil of the IPM modular electric furnace can be close to 1, and the passing current is small, so the loss is small. Compared with the previous thyristor power supply, it can save about 7% of electricity.

5. Using ZVS and ZIS control technology, ZPM adopts zero-voltage and zero-current turn-off and turn-on during commutation, which reduces IPM The switching loss is improved, the working efficiency of the equipment is improved, and the energy consumption is saved.

6. Haitian IPM intermediate frequency melting furnace saves electricity by 10-20% compared with traditional thyristor power supply, and the melting time of each furnace can be reduced Within 10-20 minutes, the equipment investment can be recovered by saving electricity within one year.

3. Easy maintenance

1. Haitian IPM intermediate frequency power supply adopts dual DSP (US) control, which truly realizes full Digitalization can be remotely controlled, which overcomes the trouble that the debugging personnel must go to the site to adjust the potentiometer in the past, and has a "self-diagnosis" function, which displays the cause of the fault and the location of the fault, avoiding the trouble of blindly looking for the fault by the maintenance personnel in the past, fully integrated and fully computerized Control, greatly improve the reliability and stability of equipment operation.

2. The reasonable and ingenious layout of IPM and radiator not only improves equipment efficiency, but also makes maintenance more convenient. The thyristor is simple and easy to operate, which solves the complicated process of replacing the IGBT module and greatly reduces the maintenance time.

3. Overcoming the shortcomings of easy damage, difficult maintenance and high maintenance cost of IGBTs in the past, Haitian electric furnace IPM module power supply is more controllable than traditional Silicon is more stable and reliable, and the price of accessories is almost the same as that of thyristor. The key is that the stability and service life of IPM power supply are several times higher than that of thyristor power supply.

IV. Environmental requirements

IPM power supply overcomes the shortcomings of previous IGBT's high requirements for the surrounding environment, and Haitian electric furnace IPM can Use in any environment without damage.

5. Unique design

1.  New signal sampling, new signal sampling solves the problem of high-power IPM control signal Sampling challenges.  

2.   Haitian electric furnace IPM module power supply is an upgrade board of previous IGBT power supply

3.  Haitian IPM intermediate frequency smelting power supply has a unique design in terms of high-power overall layout, modules, power supply, etc. Compared with the thyristor intermediate frequency power supply, it has a qualitative leap.

   With the successful launch of Haitian IPM module high-power power supply, all IPM power supplies will replace thyristor power supplies within five years. Reality.

   Haitian IPM electric furnace for intermediate frequency melting is fully guaranteed for 18 months free of charge (no warranty for leaking furnace)