What are the control methods used in DC drives?

Hello DC Control friends,

Control methods for DC drives typically include:

    Voltage Control: Adjusting the armature voltage to control speed.

    Field Control: Altering the field current to change the motor speed.

    PWM (Pulse Width Modulation): Used to create a variable voltage output using fixed DC voltage.

    Closed-Loop Control: Utilizes feedback mechanisms like encoders to achieve precise control.

    Armature and Field Control: Combined voltage and field control for wide speed ranges.

    Torque Control: Directly controlling the torque for applications like winding or unwinding rolls.

    Four Quadrant Control: For motors that need to operate in all four quadrants (forward/reverse, motoring/regenerating).

Each method has its own advantages and disadvantages, and the choice of control method depends on the specific requirements of the application.


While the use of DC drives in industry (at least at high power levels) has diminished, they are still widely found. Below, we have attempted to answer the most frequently asked questions about DC drives from our visitors.


- What are the operating principles of DC drives?
- What are the different types of DC drives?
- What are the key differences between DC drives and AC drives?
- What are the typical applications for DC drives?
- How energy-efficient are DC drives?
- What are the control methods used in DC drives?
- What type of DC drive is most suitable for a specific DC motor?
- What are the most common problems and solutions associated with DC drives?
- What are the power ranges used in DC drives?
- What additional components are used alongside DC drives?
- What are the advantages and disadvantages of DC drives?
- How do I choose a DC drive?
- How scalable are DC drives?
- Is integration between a DC drive and a PLC possible?
- What are the lifespan and maintenance requirements for DC drives?
- What safety features are included in DC drives?
- How is the dynamic response in DC drives?
- What feedback options are available in DC drives?
- What types of protection mechanisms are used in DC drives?
- What types of sensors can be used with DC drives?

++ DC Drives Home Page

These questions generally also encompass the types of queries that many people may have about DC drives. Each user or student will have their own unique question or interpretation depending on the specific situation or application. The answers provided are not binding and are not definitive. "You are welcome to share the article above as long as you cite it as the source." 05.2019


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