By hvhipot 
The series intermediate frequency electric furnace is in line with the development direction of energy conservation and emission reduction in China. With the development of the industry itself, the continuous popularization of products, and the gradual acceleration of technological transformation, it is conservatively estimated that the annual growth rate of series intermediate frequency furnaces in the next 3-5 years will not be less than 30%, and will maintain an annual growth rate of 40%. In recent years, energy-saving series intermediate frequency furnaces have attracted a group of new entrants with fierce competition, and have achieved import substitution on a large scale. The most promising sub fields for its future growth are high-performance series intermediate frequency furnaces and ultra high power series intermediate frequency furnaces. Because the universal parallel intermediate frequency furnace cannot meet the energy-saving requirements, while the high-performance series intermediate frequency furnace meets the energy-saving requirements. The rectification of the series intermediate frequency furnace is divided into single rectification power supply (6-pulse intermediate frequency power supply) and double rectification power supply (12 pulse intermediate frequency power supply) for series inversion operation. The power factor is always greater than 0.95, the harmonic content is small, the rectified output voltage remains constant, and the waveform is good. Therefore, the equipment has high operating efficiency and can save 10-20% of electricity, with significant energy-saving effects. It can fully meet the national electricity standard requirements. The rectification is powered by a 12 pulse thyristor intermediate frequency power supply, which does not contain 5th or 7th harmonic components. According to harmonic analysis, the harmonic impact generated by the 12 pulse rectification power supply is much smaller than that of a 6-pulse ordinary intermediate frequency power supply. The control system is fully digitized, with a startup success rate of 100% In line with the development direction of energy conservation and emission reduction in China.
Advantages of series intermediate frequency electric furnace technology
1. Advanced technology. Adopting the most advanced international technology currently available, it has many advantages.
2. Power saving. Compared to ordinary KGPS melting furnaces, it can save 10% -20% electricity.
3. Stable operation. Adopting thyristor control, stable operation.
4. Strong adaptability. Low environmental requirements and durability.
5. Easy maintenance and repair. Adopting thyristor control, simple maintenance and low cost.
6. Harmonics meet the standard. Through technical design, harmonic pollution meets national standards
7. High power factor: ≥ 0.95, because all thyristors in the rectification part of the series power supply are in a fully open state
8. Output waveform: rectangular wave
9. Output current waveform: sine wave
10. Induction coil fundamental voltage Q ×: inverter output voltage
11. Induction coil fundamental current: inverter output current
12. DC filtering link: large capacitor
13. Harmonics: Low harmonics, minimal pollution to the power grid
14. Efficiency: High efficiency can be increased by 10% -20% compared to parallel power supplies
15. Startup: The startup success rate is 100% because the series resonant power supply adjusts frequency and power by modulating the frequency of the inverter, resulting in a high startup rate. Easy to use, complete protection functions, overcurrent protection, overvoltage protection, phase loss protection, high water temperature protection, low water temperature protection, high water pressure, low water pressure protection, high reliability. It has been proven in on-site use that the reliability exceeds that of parallel resonant power supplies, saving energy by 10% to 20% compared to parallel power supplies
HV Hipot Electric Co., Ltd. specializes in producing series resonance (also known as power frequency withstand voltage test equipment) and has been engaged in the electrical measurement industry for many years. Its products have first-class quality and welcome customers to come and purchase.