Technological Breakthrough | Haina Technology Successfully Tested 1250kW Mining Frequency Converter
Recently, a member unit of the Shandong Equipment Manufacturing Industry AssociationHaina TechnologyThe independently developed mining explosion-proof and intrinsic safety AC frequency converter has a power breakthrough of 1250kW, and the special performance test has been successfully completed. Through this test, the equipment has been comprehensively validated in core indicators such as explosion-proof characteristics, operational stability, and power output efficiency, clearing key obstacles for subsequent industrialization and technological optimization.
Core technology creates high-quality performance
This frequency converter adopts AC-DC-AC three-level frequency conversion control technology, supports multi-mode control, flexible speed regulation, strong anti-interference, long service life, and also has the advantages of small starting current, significant energy saving, and frequent starting, which can replace traditional soft starting devices underground.
Adopting a three-level inverter topology architecture, built-in high-performance DSP chip, and scientific vector control algorithm, the output voltage waveform is close to a sine wave; Torque enhancement without the need for additional LC facilities, while reducing electromagnetic interference and grid harmonic pollution, resulting in superior control performance.
Multi dimensional testing ensures reliable operation
Explosion proof testing
Strictly inspect the strength and sealing of the explosion-proof shell according to standards, confirm that the equipment can effectively block the spread of internal explosions in underground environments with gas and coal dust explosion risks, and fully meet safety performance standards.
stability test
Simulating complex working conditions such as different loads and voltage fluctuations underground, after long-term monitoring, the equipment's various parameters are stable, without overheating, vibration and other problems, and its continuous operation ability has been verified.
Power efficiency test
Accurately measuring input and output power, the calculated power conversion efficiency fully complies with relevant national and coal mining industry standards, ensuring stable operation of equipment underground while further achieving efficient energy utilization.
Applicable scenarios and industry value
This frequency converter is suitable for harsh environments with gas and coal dust explosion hazards underground in coal mines. It can be used for variable frequency speed regulation of belt conveyors, scraper conveyors, fans, water pumps, and other equipment motors (not for ventilation equipment).
This breakthrough not only gives Haina Technology a technological advantage, but also promotes equipment upgrading in the coal mining industry, helps improve mining safety and efficiency, and injects vitality into the intelligent and green development of the industry.
Information source: Shandong Haina Technology (official account)
