ALGORITHMS OF FAULT-TOLERANT SENSORLESS VECTOR CONTROL OF SWITCHED-RELUCTANCE MOTOR IN ELECTRICAL OIL PUMP

Abstract

The relevance. Russian oil and gas industry today is one of the fastest growing in the country. High rates of development suggest introduction of new technologies and significant modernization of technological complexes that make up the production base. Particularly necessary to modificate the executive motors of fossil fuel extraction and transportation pumps. Reliable and uninterrupted operation of the pump motor is a competitive advantage. To reduce the probable equipment downtime and oil shortage it is consideredto use modern switched-reluctance motor as an actuator for oil production pump. Existing developments show the competitive advantages of this type of electric motor when finalizing the control system and applying fault-tolerant control algorithms. Use of sensorlessvector control allows improving fault-tolerance and expanding the scope of the switched-reluctance motor. To date this topic has not been reviewed sufficiently deeplyin technical literature. Moreover, the mathematical and simulation models of sensorlessvector control of a switched-reluctance electric drive in emergency non-phase operation mode have not been previously considered. The main aim of the researchisto develop fault-tolerance sensorless vector control algorithms of switched-reluctance electric motor of pump in non-phase operating modes; to ensure control structure switching correctness during phase failure; increase the fault-tolerance of the switched-reluctance electric motor of the pump in emergency operation modes by using fault-tolerant control algorithms under switching the control structure. Object: four-phase switched-reluctance motor of oil production or transportation pump in emergency non-phase operation modes. Methods: mathematical and simulation modeling, programming in the MatLab Simulink. Results. Mathematical and simulation models of a sensorless fault-tolerant four-phase switched-reluctance electric drive in emergency operation mode are developed. A sensorless fault-tolerant control algorithm of a pump with a switched-reluctance motor in emergency operation is received. The characteristics of an oil production pump in an emergency non-phase operation mode of an actuating switched-reluctance electric motor using the fault-tolerance control algorithms were obtained.

Keywords

• switched-reluctance motor
• motor phase failure
• fault-tolerant electric drive
• fault-tolerant control algorithm
• sensorless control