Method and apparatus for controlling a walking beam pump

Details Method and apparatus for controlling a walking beam pump Method and apparatus for controlling a walking beam pump

1991-03-05

1993-04-20

Wysocki, Jonathan

Electricity: motive power systems

Motor load, armature current or force control during...

H02P 104

Patent

active

052045951

ABSTRACT:
Method for controlling an electric drive motor coupled to a reciprocating mechanical system such as an oil well walking beam pump by inserting a pair of power-off pulses in a reciprocation period of the pump motor energization cycle, with one pulse in a top-of-cycle region and the other pulse in a bottom-of-cycle region to reduce rod stress and motor electrical power consumption and increase pump displacement and efficiency.

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FIG. 8-11 Theoretical Dynamometer Representations.

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