Harbin Electric Corporation actively implements the national policy of energy conservation and emission reduction and further implements key deployments of "Made in China 2025." To help coal mining enterprises achieve high yield and high efficiency, we have developed energy-efficient and environmentally friendly integrated variable frequency speed control units to address challenges posed by traditional electric drive systems, such as the separate use of motors and inverters, large footprints, high investment, and low efficiency and power factor, as well as the strict space limitations imposed by thin coal seam mining on inverters and motors.

Integrated variable frequency speed control units represent a perfect fusion of inverter and motor, fulfilling the ultimate goal of variable frequency applications and providing an optimal solution for mechatronics. They offer advantages such as high energy efficiency, stability, and motor starting torque, strong overload capacity, low grid impact, low electromagnetic interference, convenient installation and maintenance, and the ability to achieve intelligent and remote control. They can also be used in hazardous environments involving explosive gas. Our integrated variable frequency speed control units have enabled integrated drive control equipment in the coal mining and oil drilling industries, meeting the demand for miniaturization and intelligence of drive control equipment in various application scenarios while reducing equipment ownership and maintenance costs.

These integrated variable frequency speed control units encompass high-voltage and low-voltage three-phase asynchronous models, permanent magnet (direct-drive, semi-direct-drive) synchronous models, and explosion-proof and non-explosion-proof constructions, meeting the needs of various application sites for drive equipment.