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Motors controllers

The Watt & Well Nar Motion series was developed to provide downhole tools with motor controllers that are easy to configure and that fit perfectly in the system. Their rugged designs produce higher performance while generating less heat, noise, and motor vibrations, making them top-of-mind products on the market.

The series includes three products for medium to severe environments, thoroughly tested to ensure reliability and effectiveness when operating thousands of feet below ground. They can be combined with our power supplies and central processing units to convert power into confidence.

Nar Motion X

Nar Motion X is the cost-effective version of our motor controller family for low- to medium-power applications. It is a universal motor controller driver for synchronous motors (BLDC and PMSM) and can operate in sensor or sensor-less mode based on hall effect sensors, providing speed mode control.

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  • Characteristics

    This motor controller is optimized for battery operated tools. Its low energy consumption preserves battery capacity to prolong utilization in the well. It embeds some additional features  which include a capacitor bank, a 2G three-axis accelerometer, pressure measurement input, logging, and 2 digital signal input/output for vibration measurement.

    Features

    • High reliability
    • Small form factor
    • Regulated speed, two directions of rotation
    • Advanced system protection and monitoring via CAN bus
    • Micro-D connector interfaces
    • Highly configurable through an extensive Graphical User interface with logging capability
    Dimensions 205 x 38 x 18 mm
    Temperature 190 °C (maximum operating)
    DC Input 18 V to 60 V
    Maximum phase current 4 Arms
    Motor type BLDC, PMSM
    Sensors Hall, Sensorless
    Speed reference CANbus



Nar Motion S

Nar Motion S is the cost-effective version for low- to medium-power applications. It is a universal motor controller driver for synchronous motors (BLDC and PMSM) and can operate in sensor or sensor-less mode based on hall effect sensors, providing speed mode control.

  • Characteristics

    Nar Motion S is the cost-effective version for low- to medium-power applications. It is a universal motor controller driver for synchronous motors (BLDC and PMSM) and can operate in sensored or sensorless mode based on hall effect sensors, providing speed mode control.

    Features

    • High reliability
    • Small form factor
    • Regulated speed, two directions of rotation
    • Advanced system protection and monitoring via CAN bus
    • Micro-D connector interfaces
    • Highly configurable through an extensive Graphical User interface with logging capability
    Dimensions 177 x 38 x 17.6 mm
    Temperature 175 °C (maximum operating)
    DC Input 42 V to 250 V
    Maximum phase current 2 Arms
    Motor type BLDC, PMSM
    Sensors Hall, Sensorless
    Speed reference CANbus

Nar Motion M

Optimize your system by selecting our Nar Motion M, which is a reversible motor controller (4 quadrants) that includes the FOC algorithm, allowing precise position control, speed, and torque. It is also able to control the HV voltage in generator mode. Nar Motion M is the cost-effective version for medium-power applications.

VIEW THE DATASHEET

 

  • Characteristics

    The standard version includes pre-programmed firmware with hundreds of parameters to tune the controller, including motor characteristics, regulation parameters, and protection thresholds. It can easily be configured to fit your requirements.

    The MBD version includes firmware as a provided MATLAB-Simulink project, composed by the code generation model and the simulation model. The control loops are easy to customize via the Simulink model and Embedded Coder code generation.

    Features

    • High reliability
    • Small form factor
    • Four-quadrant operation with independent speed, power and torque limits for easy motor paralleling
    • Advanced system protection and monitoring
    • Highly configurable through an extensive Graphical User interface with logging capability
    Dimensions 292 x 40 x 24 mm
    Temperature 175 °C (maximum operating)
    DC Input up to 650V
    Maximum phase current 6 Arms
    Motor type BLDC, PMSM
    Sensors Hall, Sensorless
    Speed reference CANbus