The special frequency converter for offshore oil drilling rig drawworks is the automatic integration of Hande’s independent intellectual property rights "speed adaptive full-order observer control algorithm" and Hande’s "water-cooled high-power high-performance frequency converter". At present, this product has achieved vector control. Four core invention patent technologies, including algorithms and direct torque control algorithms, are applying for two core invention patents. It is one of Hande's cutting-edge products.

The high-performance variable frequency electronic control system designed by our company has replaced the position of imported equipment in the deep-sea drilling platform system to a certain extent, and solved the problem of deep-sea drilling platform relying on foreign technology.