Increasing Mud Pump Motor Reliability against Malfunctions of DC Motor Excitation System

Innovations and Prospects of Development of Mining Machinery and Electrical Engineering

矿业工程;电工学

Nikulin, O.V.^1 ; Shabanov, V.A.^2

Chief Power Engineer of Management Company Tatburneft LLC Almetyevsk, 51 Fahretdin Street, 423450, Russia^1

Department of Electrotechnical and Electrical Equipment of Enterprises, Ufa State Petroleum Technological University (USPTU), 1Kosmonavtov Street, 450044, Russia^2

关键词: Ambient conditions;    Auxiliary windings;    Drilling process;    Excitation coils;    Excitation currents;    Independent excitations;    Machinery drives;    Motor excitation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/87/3/032027/pdf
DOI  :  10.1088/1755-1315/87/3/032027

来源: IOP

【 摘 要 】

The most widely used drilling machinery, such as mud pumps, draw-works, and rotors, use direct-current (DC) motors with independent excitation as the electric drive. Drilling machinery drives operate in harsh ambient conditions, including those with the presence of moisture, dust and vibration, which increases the malfunction rate of both drilling equipment and their electric drives. One of the frequently encountered malfunctions are DC motor excitation coil faults, which disrupt the normal functioning of electric drives, often leading to shutdown of the drilling process. In a four-pole DC motor, the malfunction of one coil leads to lack of excitation current in just one coil pair, while the other pair remains functional. In this case, DC motors and drilling equipment can remain operational, which would allow for continuing the drilling process. This paper considers the possibility of operation of a DC motor on a drilling rig in those cases when one pair of excitation coils is non-functional, and describes the device for switching between the excitation coils and the auxiliary winding in a DC motor with independent excitation.