PMD oilfield pumping unit energy saving and control device
1. Realize the process control of soft start, soft stop and speed regulation operation
The starting current is small, the speed is stable, the performance is reliable, the impact on the power grid is small, and the upper and lower stroke speeds can be adjusted arbitrarily and closed-loop control operation can be realized.
2. The stroke, speed and liquid production of the pumping unit can be determined according to the liquid level and pressure of the oil well
Can effectively reduce energy consumption. Improve pump efficiency, reduce equipment wear and extend service life
3. Dedicated application program for pumping unit, simplified design, suitable for direct debugging by ordinary oil producers
4. Built-in input filtering device, full noise filtering, the interference to the grid is 1/4 of the ordinary commercial inverter
5. Full voltage automatic tracking, automatic calculation of the best braking torque, simplifying the operation of the application link
6. The built-in feedback braking unit can feed the regenerative electric energy back to the grid. The built-in reactor and filter can be directly connected to the grid, and the energy feedback efficiency is as high as 97%. It saves 15%~25% more energy than general-purpose inverters, and its heat loss is less than 3% of resistance braking, which reduces heat sources and enhances safety.
7. All-round full-drive, compatible with permanent magnet synchronous motor and asynchronous motor control
8. With multiple protection functions such as overcurrent, short circuit, overvoltage, undervoltage, phase loss, overheating, etc., to ensure safer and more reliable system operation
9. Unattended and fully automatic design in the field, the pumping speed can be controlled arbitrarily without changing the mechanical equipment. Suitable for oil wells of different regions and structures, suitable for occasions with different climates and different conditions
10. Optional wireless communication module for seamless connection with oilfield digital system
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