Analysis of the development of electric drives for oil rocking machines by the results of patent search

Object. The object of research is the modernization of the drives of oil pumping units through the use of synchronous motors and adaptive control systems. Field of application: electrical equipment for oil pumping units.

The purpose of the work is to identify inventions in the field of electric drives based on Russian highly efficient synchronous motors for oil pumping machines, to determine the advantages and disadvantages of modern developments in this field.

Methods. This analysis will reveal the strengths of the drive being developed and most competitively present them. An important point is, and checking the possibility of patenting in this area, i.e. check for patent purity.

Results. As a result of the study, the most significant inventions (based on the patent analysis of the Russian Federation) were identified in the field of sucker rod pump control stations, dynamometry, and wattmetry, which are presented in the work, they provide a brief overview, provide basic information and novelty.

Conclusion. A literature review showed that the issues of control stations for sucker rod pumps, dynamometry, wattmetry, and the development of synchronous electric motors are rather deeply covered, on the other hand, the literature does not sufficiently reflect the problems of frequency regulation of synchronous motors, as well as the capabilities of intelligent control stations that would allow increase the level of oil production, optimize the technological process, significantly reduce the influence of the “human” factor improve production safety

Thus, the need to create a competitive electric drive for oil pumping machines is the use of “smart” control systems that will regulate the operation of the well due to adaptive (based on automatic analysis of dynamograms and wattmetergrams) private regulation.

1. Khakimyanov MI, Shafikov IN, Khusainov FF. Control of sucker rod pumps energy consumption. IEEE Int. Siberian Conference on Control and Communications (SIBCON). Omsk, 2015. pp. 1-4.

2. Petrov TI, Safin AR, Ivshin IV, et.al. Model of a pumping unit control system based on synchronous motors with a sensorless method. Power engineering: research, equipment, technology. 2018; 7-8:107-116.

3. Lee K.-W, Ha J.-I. Evaluation of Back-EMF Estimators for Sensorless Control of Permanent Magnet Synchronous Motors. Journal of Power Electronics. 2012;12(4):604-614.

4. Raute R, Caruana C, Cilia J, et.al. A Zero Speed Operation Sensorless PMSM Drive Without Additional Test Signal Injection. European Conference on Power Electronics and Applications . 2012. pp 1-10.

5. Semykina IYu, Tarnetskaya AV. Modern sensorless methods for assessing the position of the stationary rotor of a synchronous motor with permanent magnets. Bulletin of KuzSTU. 2017;2(120):126- 132.

6. Ortega R, Praly L, Astolfi A, et al. Estimation of rotor position and speed of permanent magnet synchronous motors with guaranteed stability. IEEE Transactions on Control Systems Technology. 2010; 99:1-13.

7. Pacas M. Sensorless drives in industrial applications. IEEE Industrial Electronics Magazine. 2011; 5(2):16-23.

8. Aranovskiy S, Bobtsov A, Ortega R, et.al. Performance enhancement of parameter estimators via dynamic regressor extension and mixing. IEEE Transactions on Automatic Control, 2017;62(7):3546- 3550.

9. Bobrov MA, Yushkov IS, Tutaev GM, et.al. Development of a sensorless digital control system for an electric drive based on an asynchronous valve motor. Bulletin of SUSU. Series: Energy. 2017. N3.

10. Morimoto S, Kawamoto K, Sanada M, et.al. Sensorless control strategy for salient-pole PMSM based on extended EMF in rotating reference frame. Proc. 2001. IEEE IAS Annual Meeting. 2011; 4:2637- 2644.

11. Burkov PV, Burkova SP, Timofeev VY. Justifying a method of balancing crank-and-rod mechanism of mining roadheader. Applied Mechanics and Materials. 2014;682:270-275.

12. Lindh T, Montonen J-H, Grachev M. Generating surface dynamometer cards for a sucker-rod pump by using frequency converter estimates and a process identification run. IEEE 5th International Conference on Power Engineering, Energy and Electrical Drives. Riga, 2015. pp. 416-420.

13. Gabor T. Sucker-Rod Pumping Handbook. 1 st Edition. Production Engineering Fundamentals and Long-Stroke Rod Pumping. Gulf Professional Publishing, 2015. 598 p.

14. Dong L, Han X, Hua L. Effects of the rotation speed ratio of double eccentricity bushings on rocking tool path in a cold rotary forging press. Journal of Mechanical Science and Technology. 2015;29(4).

15. Saihi L, Boutera A. Robust Sensorless Sliding Mode Control of PMSM with MRAS and Luenberger Extended Observer. 2016. 8th International Conference on Modelling, Identification and Control (ICMIC 2016). 2016. pp. 48-57.