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Industrial drives are used in many different applications across the factory floor as a key part of the next generation of factory automation. There are many different types of motors used depending on the requirements, from turning shafts or driving pumps and fans. The electric motor in an industrial drive can use a range of different techniques, from brushed or brushless DC to variable-speed drives as well as single- and three-phase AC motors.

The industrial drive combines a suitable motor with a drive or inverter to control the speed, torque and position, as well as switches, sensors and communications links as part of the Industrial Internet of Things (IIoT).

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    • Industrial drive applications need to take into account the load on the motor, speed, acceleration, deceleration and duty cycle of the motor. These criteria are used to determine the horsepower and torque requirements. The control of the motor speed and position of the rotor also need to be considered when deciding whether to use constant or variable horsepower.

      Variable horsepower / Constant torque

      For example, variable horsepower applications with constant torque include gear pumps, cranes and drives for conveyor belts. These often use a constant-speed AC or DC electric motor as the load is constant.

      Constant horsepower / Variable torque

      A constant horsepower drive with variable torque often uses a DC or servo motor, or an AC motor with a closed-loop control. These can be used for applications such as unwinding and rewinding in roll-to-roll machines.

      Variable horsepower / Variable torque

      The third approach of variable horsepower and variable torque is often used in centrifugal pumps, fans, mixers and agitators. This is because in these industrial applications the load increases as the speed increases. Naturally a variable frequency drive (VFD) is a suitable solution for such a design.

      Linear motion drives and actuators often need accurate control of the position of the rotor and stator, while presses and tension control systems can need accurate torque control. These often use an industrial servo drive or stepper motor with a feedback control system to provide high performance.

    • There are many different applications for industrial motor control right across the factory floor. Automating industrial processes and connecting the drives up to the cloud are a key part of the move to the next generation of factory automation, often called Industry 4.0. These applications can vary from fans to pumps and from servo drives to linear motors.

      industrial drives in factory
      Electric motor-driven industrial pumps
    • AC Drives

      An AC drive often uses a single-phase induction motor or three-phase brushless motor with a frequency controller to handle the speed and torque. Control methods such as variable-frequency drive (VFD) or field-oriented control (FOC) can be used, and there are also poly-phase motors that use multiple-phase signals for more accurate control of the drive.

    • Fans

      Fans are of course widely used for ventilation, cooling and fume extraction across a wide range of applications on the factory floor. The mechanical configuration such as the axial, centrifugal and tangential air flow and the size and shape of the blades must be carefully considered, and this leads to the selection of a particular motor. This can be a brushed or brushless DC motor or a single- or three-phase AC induction motor depending on the size of the blades and the speed at which they need to rotate.

    • Forklift

      Electric forklifts use industrial drives in several areas, from driving the wheels to driving the hydraulic pumps that lift the heavy cargo. The powertrain and the hydraulic actuators typically use a permanent-magnet DC motor (PMDC) controlled by high-power low-voltage inverters.

    • Pumps

      Pumps can be found in many industrial environments and depending on the application, the mechanical configuration, size and shape must be carefully selected. Equally, the motor type – whether universal, brushed or brushless DC motor or a single- or three-phase induction motor – and the associated motor drive need to be selected to achieve the overall performance required by the system.

    • Servo Drives

      Industrial servo drives are used to provide the maximum accuracy for a motor's acceleration, speed and position. They are often used in robotics applications where accurate placement is needed at high speed, or where accuracy is needed such as lens autofocus control or antenna positioning. These also make use of sophisticated feedback control loops around a three-phase induction motor drive or BLDC motor.

Related applications

AC Drives
AC Drives
An AC Drive is a frequency converter designed to control the speed and torque of an electric motor – typically...
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Fans
Fans
Fans are widely used in many industrial environments for ventilation, cooling and fume extraction purposes...
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Forklift
Forklift
An electric forklift is a battery-operated truck with forks that can lift and move heavy loads. It is typically used...
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Pumps
Pumps
Pumps are widely used in many industrial environments and depending on the specific use the mechanical...
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Servo Drives
Servo Drives
Servomotors are used when maximum accuracy is required in the motion’s acceleration, speed and position...
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Technical Documentation

    • Description Version Size Action
      AN5123
      STSPIN32F0 family - Bootloader and USART protocol
      2.0
      224.1 KB
      PDF
      AN5123

      STSPIN32F0 family - Bootloader and USART protocol

Presentations & Training Material

    • Description Version Size Action
      An introduction to electric motors 1.0
      2.23 MB
      PDF

      An introduction to electric motors

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