The pumping unit is a critical piece of equipment in oilfield extraction. Among them, the traditional four-bar linkage beam pumping unit accounts for approximately 90%, making it the dominant model for mechanical oil recovery. Often vividly referred to as "nodding donkeys," beam pumping units serve as the primary oil production equipment in oilfields. In this context, variable frequency drives play a key role across various applications, including the control of beam pumping units, water injection wells, electric submersible pumps, and oil and gas gathering and transportation.

Conventional pumping units typically use asynchronous motors as the driving mechanism. However, due to the relatively low efficiency of asynchronous motors, these pumping units suffer from high energy consumption. They account for about 40% of the total electricity usage in an oilfield, while the traditional asynchronous motor drive system operates at less than 30% efficiency, indicating a significant waste often described as "using a large horse to pull a small cart." As a highly efficient and energy-saving motor type, permanent magnet motors are gradually gaining adoption in the pumping unit sector. The Canroon CV900A Series PMSM Drive provides an efficient solution for pumping unit energy-saving retrofits through intelligent power output adjustment and dynamic balance technology.

The Canroon CV900A Series is a universal, high-performance current vector PMSM drive, specifically developed for driving permanent magnet synchronous motors. It features high-performance vector control, providing high torque output at low speeds, excellent dynamic characteristics, and superior overload capability. Equipped with a built-in RS485 communication interface, it is primarily used for controlling and regulating the speed and torque of three-phase AC synchronous motors. The CV900A Series PMSM Drive offers comprehensive protection and fault output functions, including safeguards against short circuits, overload, overvoltage, phase loss, and stall. It enables the pumping unit to achieve an optimal balanced state based on the well's load, operate at a rational stroke speed according to the well's fluid production rate, and implements effective protection based on the well's conditions. This ensures the system operates safely and efficiently.

The Canroon CV900A Series PMSM Drive, combined with a permanent magnet synchronous motor, forms the drive system for the pumping unit. Its exceptional drive capability and vector control characteristics deliver outstanding performance in areas such as operating current, motor noise, speed stability precision, acceleration/deceleration time, torque, and torque dynamic response speed. This drive system effectively reduces energy loss in the pumping unit system and enhances its overall working efficiency.