Request Information

For any questions about price, specific products, comments on Lab-Volt products or if you have any issue regarding Lab-Volt products, please contact us using the following email addresses :

Four-Quadrant Dynamometer/Power Supply



The Four-Quadrant Dynamometer/Power Supply is a highly versatile USB peripheral designed to be used in the Electric Power Technology Training Systems. Two operating modes are available: Dynamometer and Power Supply. A wide variety of user-selectable functions is available in each operating mode.

In the Dynamometer mode, the unit becomes a four-quadrant dynamometer that can act as either a fully configurable brake (i.e., a mechanical load) or a fully configurable prime mover (i.e., a motor drive). In the Power Supply mode, the unit becomes a four-quadrant power supply that can act as a dc voltage source, dc current source, ac power source, etc.

In each operating mode, key parameters related to the selected function are displayed. Speed, torque, mechanical power, and energy are displayed in the Dynamometer mode while voltage, current, electrical power, and energy are displayed in the Power Supply mode. Optional functions, such as a small wind-turbine emulator, an hydraulic turbine emulator, a solar panel emulator, battery chargers, an SDK (Software Development Kit) etc., can be added to the standard functions to further enhance the training possibilities of the Four-Quadrant Dynamometer/Power Supply. Refer to the Optional Equipment section of this data sheet for more information about the optional functions currently available.

Two modes are available to control the function which the Four-Quadrant Dynamometer/Power Supply performs: Manual and Computer-Based.

In the Manual control mode, the module operates as a stand-alone unit, and the function performed is selected, set, and monitored using front-panel mounted controls and display. This mode provides access to all basic functions. In the Computer-Based control mode, the function performed by the module is selected, set, and monitored using the LVDAC-EMS software. In this mode, communication between the Four-Quadrant Dynamometer/Power Supply and the host computer running the LVDAC-EMS software is achieved through a USB connection. This mode provides access to all basic functions, as well as to additional advanced functions.

Features & Benefits

  • State-of-the-art, multipurpose device combining power supply, prime mover, dynamometer, metering and emulator properties
  • USB port computer-based mode allows the user to completely control every function directly from the computer
  • Supports learning of electromechanical and renewable energy
  • Can be connected with other EMS equipment to enhance the training possibilities

Topic Coverage

  • Speed and Torque
  • Voltage and Current
  • Mechanical and Electrical Power
  • Energy


Product Fixes

Display problems with LVDAC-EMS

Controls, power supply terminals, and display on the front panel.
Download Image

Low-level inputs and outputs for advanced control functions and USB port connector on the front panel.
Download Image

Standard control functions available in Power Supply mode.
Download Image

Optional module functions available in each control mode.
Download Image

Four-Quadrant Dynamometer/Power Supply with optional functions.
Download Image

Texts that will be displayed have been partly translated by an automatic translation system.

To view any text in its original language (English), leave the mouse pointer on this text (or touch the text if you use a tablet).