ELECTRIC FREQUENCY CONVERTER CONTROLLING

Brand Owner Address Description
AXIOM Borets Company 5 Moldavskaya Street Moscow 121467 Russian Federation Electric frequency converter for controlling the speed of an electric motor; Electronic variable speed controller for oilfield surface and downhole wellbore equipment; Electronic controller for use in the oil and gas industry for monitoring wellbore data, data from surface equipment and data from the wellbore equipment;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. On a training device, in particular for developing human muscles, having a torque-generating unit which comprises an electric motor and a reduction gearing, and whose output interacts with at least one training element offered to the exercising person, an electric motor is designed as a three phase AC motor. Associated with the latter is a frequency converter for adjusting the frequency and amperage of the three phase current supplied to the electric motor. A control unit is provided upstream of the frequency converter. An angle-of-rotation sensor is associated with the motor whose measured signal is supplied to both the frequency converter and the control unit. The frequency converter is fed by the control unit with a setpoint value of the torque to be generated by the motor which setpoint value receives the measured signal from the angle-of-rotation sensor. The frequency converter adjusts the frequency and the amperage of the motor current using the principle of field-oriented control. The control unit comprises two control circuits in cascade arrangement for controlling the position and the speed of rotation of the training element.